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SQL Null or Empty   How to Check for Null or Empty Column in SQL Server   SQL Training Online
 
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http://www.sqltrainingonline.com SQL Null or Empty - How to Check for Null or Empty Column in SQL Server - SQL Training Online You can download the sample table script at http://www.sqltrainingonline.com/how-to-filter-for-sql-null-or-empty-string/. In this video, I show you how to filter for a SQL null or empty string. It can be difficult to filter a null because you can't simply compare with an equal sign. You have to use a special IS NULL clause to make the filter work. I also show you how to combine both the SQL Null and Empty String together in a special trick with the isnull SQL Server function. I use SQL Server 2012 to demonstrate the technique. Let me know what you think by commenting or sharing on twitter, facebook, google+, etc. If you enjoy the video, please give it a like, comment, or subscribe to my channel. You can visit me at any of the following: SQL Training Online: http://www.sqltrainingonline.com Twitter: http://www.twitter.com/sql_by_joey Google+: https://plus.google.com/#100925239624117719658/posts LinkedIn: http://www.linkedin.com/in/joeyblue Facebook: http://www.facebook.com/sqltrainingonline
Views: 15752 Joey Blue
NULL Value in Oracle Database | Oracle Tutorials for Beginners
 
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NULL Value in Oracle Database | Oracle Tutorials for Beginners NULL Value in Oracle Database NULL Value in Oracle SQL NULL Value in SQL NULL Value in Oracle Database Oracle Tutorials for Beginners Oracle Tutorials for Beginners Oracle PL/SQL Tutorials for Beginners Oracle PL/SQL Tutorials for Beginners Oracle PL/SQL Tutorials for Beginners how to select null values in oracle oracle compare null values in where clause null=null in oracle how to handle null in case statement in oracle how to check null value in oracle stored procedure oracle nvl null value in oracle query how to check empty column value in oracle how to select null values in oracle oracle is null vs = null oracle nvl oracle is not null oracle decode oracle isnull oracle case when null select null from table in oracle oracle compare null values in where clause oracle select null how to check empty column value in oracle oracle sql not null or empty oracle is not null how to handle null in case statement in oracle oracle isnull oracle nvl
Views: 405 Oracle PL/SQL World
ORACLE SQL AND PL/SQL INTERVIEW QUESTION : SUBQUERY WITH NULL / NOT IN / NOT EXISTS OR OUTER JOIN
 
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This video demonstrates the oracle sql interview question where one need to use either not in, not exists or an outer join to get the desired result. For example if one is asked to fetch records from department table where department_id is not present in employee table
Views: 1803 Kishan Mashru
Different ways to replace NULL in sql server - Part 15
 
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In this video we will learn about the different ways to replace NULL values in sql server. 1. ISNULL() function 2. CASE statement 3. COALESCE() function Text version of the video http://csharp-video-tutorials.blogspot.com/2012/08/different-ways-to-replace-null-in-sql.html Slides http://csharp-video-tutorials.blogspot.com/2013/08/part-15-different-ways-to-replace-null.html All SQL Server Text Articles http://csharp-video-tutorials.blogspot.com/p/free-sql-server-video-tutorials-for.html All SQL Server Slides http://csharp-video-tutorials.blogspot.com/p/sql-server.html All Dot Net and SQL Server Tutorials in English https://www.youtube.com/user/kudvenkat/playlists?view=1&sort=dd All Dot Net and SQL Server Tutorials in Arabic https://www.youtube.com/c/KudvenkatArabic/playlists
Views: 258484 kudvenkat
Oracle Database11g tutorials 6 | | How to use Concatenation operator, character String
 
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How to use concatenation operator for combining the output of two or more columns and how to use literal character string This SQL tutorial and Oracle database 11g tutorial for beginners will show How to use concatenation operator for combining the output of two or more columns and how to use literal character string Tool used in this tutorial is SQL developer. This tutorial series is part of SQL expert exam certification training. If you are preparing for SQL certification you can use my tutorials. This SQL Tutorial is a part of free training. Copy Cloud referral link || Use this link to join copy cloud and get 20GB of free storage https://copy.com?r=j7eYO7 You can download the Script which is used in this SQL tutorial from this link https://copy.com/XoSlBjq7yRzn Contacts Email [email protected] Twitter https://twitter.com/rebellionrider Instagram http://instagram.com/RebellionRider Facebook. https://www.facebook.com/imthebhardwaj Linkedin. in.linkedin.com/in/mannbhardwaj/ Thanks for linking, commenting, sharing and watching more of our videos This is Manish from The Code makers
Views: 128923 Manish Sharma
IS NULL Operator in SQL Query with Example
 
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SQL IS NULL Operator: A column value is NULL if it does not exist. The IS NULL operator is used to display all the rows for columns that do not have a value. For Example: If you want to find the emp names who do not get any commision, the query would be as given below: select * from emp where COMM IS NULL; In the opposite way, NOT NULL also works here: select * from emp where COMM IS NOT NULL; Thanks for watching..:)
Views: 3422 WingsOfTechnology
DYNAMIC SQL WITH EXECUTE IMMEDIATE IN ORACLE PL/SQL WITH EXAMPLE
 
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The audio and video now synced. Ever tried creating a table inside a PL SQL block, or a function or a procedure? If yes, then you would know that it would raise an error, as DDL statements are not allowed inside a PL/SQL Block. So the solution to such a case, where you want to generate tables, or sequences or want to execute any DDL statement on the fly, then use synamic sql. Dynamic SQL statment will allow you to create state statements on the fly and then you can execute them using the execute immediate statement. This video tutorial demonstrates on this topic of using synamic sql with execute immediate in a PL/SQL block.
Views: 4533 Kishan Mashru
NVL2 FUNCTION IN ORACLE SQL WITH EXAMPLE
 
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This video is the 2nd video in the series of 'working with null in oracle sql' , the video explains and demonstrates the use of nvl2 function in oracle sql with simple and easy to understand example.
Views: 1488 Kishan Mashru
NULL-Related Functions in Oracle
 
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An overview of some of the functions Oracle provides to handle NULL values in SQL and PL/SQL. For more information see: https://oracle-base.com/articles/misc/null-related-functions Website: https://oracle-base.com Blog: https://oracle-base.com/blog Twitter: https://twitter.com/oraclebase Cameo by Bjoern Rost Blog: http://portrix-systems.de/blog/brost/ Twitter: https://twitter.com/brost Cameo appearances are for fun, not an endorsement of the content of this video.
Views: 2555 ORACLE-BASE.com
Oracle 12C Tutorial 20 - Constraints (Primary, Foreign, Unique, Null etc.)
 
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This Video Tutorial Will Describe about various constraints we can use with tables. Some of the constraints can used as table level or column level so also known as table level constraints and column level constraints. These command will also work on other versions of database like Oracle 11g Database, Oracle 10g Database, Oracle 9i Database, Oracle 8i Database, Oracle 8 Database and so on. In this video i explain Not Null Constraint, Unique key Constraint, Primary Key Constraint, Foreign Key - Reference key Constraint, Check constraint and user_constraints table. Full Syntax will be given in this video tutorial about how to use these constraints. Along with live example to execute Not Null Constraint, Unique key Constraint, Primary Key Constraint, Foreign Key - Reference key Constraint, Check constraint and user_constraints table . All the keywords, format, mandatory clauses etc are described in this video.
Strings in PL SQL Tutorial
 
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Subscribe for more PL SQL tutorials https://www.youtube.com/channel/UC7sbHUgN8FnJEZkEjvKTwJg String Function & Purpose 1 ASCII(x); Returns the ASCII value of the character x. 2 CHR(x); Returns the character with the ASCII value of x. 3 CONCAT(x, y); Concatenates the strings x and y and return the appended string. 4 INITCAP(x); Converts the initial letter of each word in x to uppercase and returns that string. 5 INSTR(x, find_string [, start] [, occurrence]); Searches for find_string in x and returns the position at which it occurs. 6 INSTRB(x); Returns the location of a string within another string, but returns the value in bytes. 7 LENGTH(x); Returns the number of characters in x. TUTORIALSPOINT Simply Easy Learning Page 59 8 LENGTHB(x); Returns the length of a character string in bytes for single byte character set. 9 LOWER(x); Converts the letters in x to lowercase and returns that string. 10 LPAD(x, width [, pad_string]) ; Pads x with spaces to left, to bring the total length of the string up to width characters. 11 LTRIM(x [, trim_string]); Trims characters from the left of x. 12 NANVL(x, value); Returns value if x matches the NaN special value (not a number), otherwise x is returned. 13 NLS_INITCAP(x); Same as the INITCAP function except that it can use a different sort method as specified by NLSSORT. 14 NLS_LOWER(x) ; Same as the LOWER function except that it can use a different sort method as specified by NLSSORT. 15 NLS_UPPER(x); Same as the UPPER function except that it can use a different sort method as specified by NLSSORT. 16 NLSSORT(x); Changes the method of sorting the characters. Must be specified before any NLS function; otherwise, the default sort will be used. 17 NVL(x, value); Returns value if x is null; otherwise, x is returned. 18 NVL2(x, value1, value2); Returns value1 if x is not null; if x is null, value2 is returned. 19 REPLACE(x, search_string, replace_string); Searches x for search_string and replaces it with replace_string. 20 RPAD(x, width [, pad_string]); Pads x to the right. 21 RTRIM(x [, trim_string]); Trims x from the right. 22 SOUNDEX(x) ; Returns a string containing the phonetic representation of x. 23 SUBSTR(x, start [, length]); Returns a substring of x that begins at the position specified by start. An optional length for the substring may be supplied. 24 SUBSTRB(x); Same as SUBSTR except the parameters are expressed in bytes instead of characters for the single-byte character systems. 25 TRIM([trim_char FROM) x); Trims characters from the left and right of x. 26 UPPER(x); Converts the letters in x to uppercase and returns that string.
Views: 316 Puzzle Guru
Tutorial 44 : NULL in Oracle || NVL() Explained
 
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Hi Friends! Here we are learning about what is NULL in Oracle. How we can deal with NULL Values. How NVL() Function helps us with NULL Value. Hope the concept and example would be clear to you. For any help or issue, let me know in comment box. Thanks, Happy Coding.
Views: 68 YourSmartCode
07 MySQL Tutorial for Beginners: Logical Operators (AND, OR, NOT), NULL, IS NULL Clause
 
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"Logical operators" enable us to use more than one condition in WHERE clause. You use the AND "logical operator" to specify that the search must satisfy both of the conditions. In other words: both conditions must be true. You can use "logical operators" in a WHERE clause to combine two or more search conditions into a compound condition. You use the OR "logical operator" to specify that the search must satisfy at least one of the conditions. In other words: only one of the conditions must be true. You can use the NOT "logical operator" to negate a search condition. The order of precedence for the logical operators affects the result of a search condition. When MySQL evaluates a compound condition, it evaluates FIRST the AND operator and THEN the OR operator. You can use parentheses to override the order of precedence. If you want, you can use parentheses to clarify the sequence in which the operations are evaluated even if they're not needed for the expression to be evaluated properly, just as you can with arithmetic expressions. A column can contain a NULL value. A NULL value is typically used to indicate that a value is not known, unavailable, or not applicable. A NULL value is not the same as a zero or an empty string. If you want to test for NULL values in search conditions, you have to use the IS NULL clause instead of the normal comparison operators. A NULL value is not the same as a zero and as an empty string. The row that has a NULL value isn't included in the result set when numbers is NOT equal to zero as well. You can also use the NOT operator with the IS NULL clause. EXERCISES for your SELF-TRAINING: http://golearnfast.com/Quizzes.php?_SelectSmallerGroup_284=0&Lessons_ID=284 SCRIPT FOR THE EXAMPLES: http://www.golearnfast.com/files/lessons_material/lesson_277_1440544998.sql SUBSCRIBE! https://www.youtube.com/channel/UCMEaGDoHU7c9tWyafZ9vC6Q?sub_confirmation=1 FACEBOOK https://www.facebook.com/golearnfast GOOGLE+ https://plus.google.com/u/0/b/101326338689489366802/
Views: 4379 golearnfast
AskTOM TV - not null... I mean *really* not null
 
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A short video to help you understand the "thought process" behind answering AskTom questions. blog: https://connor-mcdonald.com ========================================­­­­============== Copyright © 2017 Oracle and/or its affiliates. Oracle is a registered trademark of Oracle and/or its affiliates. All rights reserved. Other names may be registered trademarks of their respective owners. Oracle disclaims any warranties or representations as to the accuracy or completeness of this recording, demonstration, and/or written materials (the “Materials”). The Materials are provided “as is” without any warranty of any kind, either express or implied, including without limitation warranties or merchantability, fitness for a particular purpose, and non-infringement.
Views: 657 Connor McDonald
Null value in oracle
 
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this video describes null concept in oracle. join the group and share your knowledge and ask your doubts. https://www.facebook.com/groups/940425699338535/
Oracle Database11g tutorials 12 || SQL Concat Function - SQL character manipulation function
 
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Link for SQL concat function: http://www.rebellionrider.com/SQL-concat-function.htm SQL Concat function/SQL concat() function First function of SQL character manipulation function. Two have in depth knowledge of SQL concatenation operator Please watch my video on SQL concatenation Operator http://youtu.be/PYMeFe72Bas Tool used in this tutorial is command prompt. This tutorial series is part of SQL expert exam certification training. if you are preparing for SQL certification you can use my tutorials. This SQL Tutorial is a part of free training. Copy Cloud referral link || Use this link to join copy cloud and get 20GB of free storage https://copy.com?r=j7eYO7 Link for SQL function introduction Video 10 http://youtu.be/5rx8Q4x4-qI Link SQL concat Article http://www.rebellionrider.com/SQL-concat-function.htm Contacts E-Mail [email protected] Twitter https://twitter.com/rebellionrider Instagram http://instagram.com/rebellionrider Facebook. https://www.facebook.com/imthebhardwaj Linkedin. in.linkedin.com/in/mannbhardwaj/ Thanks for linking, commenting, sharing and watching more of our videos This is Manish from RebellionRider.com -------------------------------------------------------------------------------------------- SQL Concat () function is a Character manipulation function which is a category of SQL character function. We have already discussed the intro of SQL character function in Video 10. You can find link of this video in description below. Ok let's go ahead. SQL Concat () function concatenates two separate character string into one character string. Let's see the syntax Concat (string_1 , String_2) Note here that SQL Concat function takes only two arguments at a time. This SQL Concat function will return string_1 concatenated with string_2. This also means that it will return a single string which is a combined string of parameter String_1 and String_2. Both the parameters of SQL Concat function String_1 and string_2 can be of any data-type. You can even specify the columns of the table here. SQL Concat function is equivalent to the concatenation operator (||). SQL concatenation operator is represented by double solid vertical bars or we can say double pipe signs. Question: How to concatenate more than two strings as SQL Concat that can have only 2 parameters and what is the difference between SQL Concat Function and SQL concatenation operator? The one answer for the second Question What is the Difference between SQL Concat Function and SQL concatenation operator? Is While SQL Concat function takes only two parameters, The Concat operator can be repeated as often as is necessary. Meaning, by the help of SQL Concat operator you can combine as many strings as you want. And Concatenation operator is also not supported by several databases such as SQL server so this might cause problem. To answer the first question How to concatenate more than two strings as SQL Concat that can have only 2 parameters? We will have to jump over SQL developer. Let's see some examples. Say we want to retrieve the full name of an employee from Employees table. Let's try it using SQL Concat function. SELECT Concat (first_name, last_name) AS "Full Name" FROM employees; Here in this query we use two column names - first_name and last_name as arguments of our Concat function Execute. As you can see here, we get full name of our employee but there is no space in between first name and last name. We will see how to format this string using SQL Concat function in a few seconds But before that, let's see how to do the same task using SQL concatenation operator. SELECT first_name ||last_name AS "Full name" FROM employees; As you can see this query also produces the same result. Now we will see how to format full name of employees First we will do this using SQL concatenation Operator. SELECT first_name||' '||last_name AS "Full name" FROM employees; Now you can see we get space between first name and last name of the employee. Again, let's do it using SQL Concat function. Here we will see the nested function concept where we will be using nested Concat function to achieve this formatted string. SELECT Concat (Concat (first_name, ' '), last_name) FROM employees; Inner Concat function has two parameters. These are our first column name first_name and an empty string which will be a space between first name and second name. This Concat will now return a string which is the first name with space. This returning string will be the first input of our Outer Concat and column last_name will be the second input. All together this will give us the desired output. As you can see this method is complex than the first one where we use SQL concatenation operator.
Views: 76226 Manish Sharma
Oracle Database Indexes: Myths, Tips and Tricks
 
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In this tutorial, OCM John Watson will - via demonstrations - debunk these myths: Myth #1: Oracle Database does not index NULL Myth #2: A search that includes wildcards can't use an index if the wildcard precedes the string. Myth #3: Oracle will not use a function-based index unless the FBI is coded in the predicate. Myth #4: Indexes always help. The more indexes the better. See http://skillbuilders.com/free-oracle-tutorials for gigabytes of free Oracle video tutorials.
Views: 16075 SkillBuilders
Java 8||Predicate Example to Remove null Values and empty String from the given List || by Durga
 
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Oracle Java Certification: Shortest Way To Crack OCA 1Z0-808 Just @ Rs 640/- -------------------------------------------------------------------------------------------------------- 1. For Java SE 8 Programmer I Exam 2. Topic wise Tests and Grand Tests 3. 280 Realistic Questions With Clear Explanation 4. Study Material (408 Pages) 5. Question Bank (107 Pages) 6. Videos (63 Sessions) Use the below links to access Durga Sir Videos and Downloadable Materials and Topic wise Tests and Grand Tests with Life-Time Access. 1. Oracle Java Certification: Shortest Way To Crack OCA 1Z0-808 Link: https://goo.gl/vcMKjz 2. Java 8 New Features In Simple Way Link: https://goo.gl/F2NfZi 3. Java 9 New Features In Simple Way: JShell, JPMS and More Link: https://goo.gl/s9PP1p 4. Complete JDBC Programming Part-1 Link: https://goo.gl/uT9sav 5. Complete JDBC Programming Part-2 Link: https://goo.gl/VmhM7t
ORACLE PL/SQL INTERVIEW : REVERSE NUMBER STRING PROGRAM
 
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This video tutorial demonstrates on the oracle pl/sql interview question of reversing a number string without using the reverse function, the video explains a very simple and generic approach that can be used to solve this question.
Views: 3121 Kishan Mashru
05-Oracle SQL Arabic Course - Null Value & Column Aliases -اوراكل ديفلوبر
 
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الدرس الخامس من سلسلة دروس تعلم أوراكل محتويات الدرس: 1- NULL Values. 2- Null values in Arithmetic Expressions. 3- Column Alias. .......................................­.................... تواصل معانا علي الفيس بوك من هنا : https://www.facebook.com/askgad .......................................­.................... تواصل معانا علي موقعنا من هنا : https://www.askgad.com/
Views: 3376 Ask Gad
Java & MySQL - Check if a value already exists
 
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Easy tutorial on how to check if a value already exists in the database.
Views: 25566 Mozoran
Oracle username and password and Account unlocking
 
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all education purpose videos
Views: 265253 Chandra Shekhar Reddy
Oracle SQL Tutorial 10 - Whitespace, Case Sensitivity, and Comments
 
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SELECT "Hello World" FROM DUAL The first thing you should know about writing queries is that this SQL is not whitespace sensitive. That means we can space this out however we wish. The only requirement is that you do not separate keywords out with spaces. They must be as one entity. Another gotcha is that when you are inside of quotes, whitespace becomes very important. That means if inside of a string you put a character and then 10 spaces, every single one of those spaces is going to part of that string: SELECT "Hello World" FROM DUAL The next thing you should notice is the capitalization. When we type SQL, by convention we capitalize all keywords. I personally really like this because you can easily see the difference between keywords and words that we created or use. But obviously we could capitalize the letters in the quotes. Keep in mind that this is a convention, meaning you do not have to follow this. Oracle is also case insensitive in that SELECT and select both do the same thing. Strings, once again, care about casing. Take this, for example: SELECT 'true' FROM DUALWHERE 'Hello' = 'Hello' And compare the results to this: SELECT 'true' FROM DUALWHERE 'Hello' = 'hello' Only the first one outputs the value true. Once we get into creating database objects such as tables with columns, those are not case sensitive either. That means instead of selecting from DUAL, you can select from DuAl Finally, I shall introduce you to comments. Comments allow you to tell the database engine that you want it to ignore a certain part of your code and not execute it. This is helpful if you want to document your code. It is also useful if you want to have multiple SQL statements open in one tab, but don't want to hover over the one you want to execute. You can comment out the ones you are not using and uncomment them when you are done. Using – will comment out the rest of the line, Using /* */ will comment everything between. This can even be used over multiple lines. But now, let's move onto the important stuff… CREATING TABLES!!!!! ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ HELP ME! http://www.patreon.com/calebcurry Subscribe to my newsletter: http://bit.ly/JoinCCNewsletter Donate!: http://bit.ly/DonateCTVM2. ~~~~~~~~~~~~~~~Additional Links~~~~~~~~~~~~~~~ More content: http://CalebCurry.com Facebook: http://www.facebook.com/CalebTheVideoMaker Google+: https://plus.google.com/+CalebTheVideoMaker2 Twitter: http://twitter.com/calebCurry Amazing Web Hosting - http://bit.ly/ccbluehost (The best web hosting for a cheap price!)
Views: 14514 Caleb Curry
Oracle Database11g tutorials 14 : How to CREATE TABLE using sql developer and command prompt
 
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Oracle Database11g tutorials 14 How to Create table using command prompt and Create table using sql developer Blog Link http://bit.ly/1TkY4Oe Time Line 0:25 Introduction of Tables in Database 1:03 What is Create Table (Introduction of create table) 1:30 Syntax of Create Table 2:08 How to create table using Command Prompt 4:55 How to create table using SQL Developer Links for Oracle Database tutorials 4: database connectivity using SQL developer and command prompt http://youtu.be/wSqoXRlXDUU You can have indepth knowledge about SQL create table here http://www.rebellionrider.com/sql-create-table.html Tool used in this tutorial is command prompt. This tutorial series is part of SQL expert exam certification training. if you are preparing for SQL certification you can use my tutorials. This SQL Tutorial is a part of free training. Copy Cloud referral link || Use this link to join copy cloud and get 20GB of free storage https://copy.com?r=j7eYO7 Contacts E-Mail [email protected] Twitter https://twitter.com/rebellionrider Instagram http://instagram.com/rebellionrider Facebook. https://www.facebook.com/imthebhardwaj Linkedin. http://in.linkedin.com/in/mannbhardwaj/ Thanks for linking, commenting, sharing and watching more of our videos This is Manish from RebellionRider.com Today in this oracle database tutorial we will see How to CREATE A TABLE. if we have to define a table in layman language then we can say that Tables are just a collection of Rows and Columns but In RDBMS tables are database objects which help in organizing data into ROWS and COLUMNS. We can also say that SQL tables are kind of data structure which are used by database for efficient storage of data. To create a table in our database we use SQL CREATE TABLE command. SQL CREATE TABLE is a type of DATA DEFINITION LANGUAGE also known as DDL. To Create a table in your schema you will require CREATE TABLE system privilege. In our future videos we will see what are system and object privileges and how to grant them to a user. Today for this video we will be using Sample schema HR which already has all the necessary privileges. Ohk Let's see the syntax. CREATE TABLE table name ( column name1 Data-Type(size), column name2 Data-Type(size), ..... ); CREATE TABLE is an oracle reserved word or say an Oracle key word whereas There are 3 different ways of creating a table in Oracle database. Creating a table using Command Line Interface (CLI) in Oracle database For demonstrating how to create table in oracle database using CLI, I'll be using Command prompt. Thats how we create table using command prompt. you can check your table structure by DESCRIBE command for that just write DESC and your table name. Like this Another way of creating a table is by using Graphic user interface (GUI) in Oracle database To demonstrate how to create table using GUI we will use SQL developer. Lets open our SQL developer I am connected to HR schema if you do not know how to create a connection to database using SQL developer please watch my oracle database tutorial 4 that explains database connectivity using SQL developer and command prompt. Link for this video is in the description below. So lets create a table. Creating a table using SQL developer is very easy we do not have to fire any query here. Let's start First of all right click on your connection in which you want to create a table and choose schema browser. This will open a separate schema browser pane or you can expend your connection by clicking this + sign and then right click on table and choose New Table. However I prefer working with schema browser so let's skip to schema browser pane here from the first drop-down list you can choose connection name and in the second drop down list you can choose what database objects you want to work with we want to create a table thus I'll choose table and then click this arrow here and choose option for new table Ok we have created a table wizard first of all give a unique name to your table and add some column as well. For this, click the green plus button. Now we already have a column so give it some name. Also choose a datatype from the list and specify any size you can check this not null column if in case you want to make this a mandatory column you can also specify default value and constraint If you want to make this column a primary key you can click here In my future video i'll show you what are these constraints and different ways of applying them on a column in a table. for this video we will concentrate on create table only so when you are done with all your columns click ok Thats your table You can double click on your table here and can see its structure. Thats it
Views: 168919 Manish Sharma
part 13 sql model not null in dim by and measures
 
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sql model clause not null, dimension by, measures, data warehousing, oracle 10g
07 SQL Server Queries - Union, Union All, IsNull, Like, String Functions
 
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String Functions - Part1 Like Union and Union All
Views: 587 Bhaskar Jogi
Oracle LAG & LEAD Functions / Arabic
 
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--The LAG function is used to access data from a previous row --LAG (value_expression [,offset] [,default]) OVER ([query_partition_clause] order_by_clause) --value_expression - Can be a column or a built-in function, except for other analytic functions. --offset - The number of rows preceeding/following the current row, from which the data is to be retrieved. The default value is 1. --default - The value returned if the offset is outside the scope of the window. The default value is NULL. -- The LEAD function is used to return data from the next row. --LEAD (value_expression [,offset] [,default]) OVER ([query_partition_clause] order_by_clause)
Views: 601 khaled alkhudari
SQL - Mais Primary Key e not null
 
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Curso Oracle PL/SQL Essentials http://bit.ly/1N3upVn Curso Oracle SQL Expert - Certificação 1Z0-047 http://bit.ly/1G4rKWG Curso Oracle Aprendendo SQL - Preparatório exames 1Z0-051/1Z0-061 http://bit.ly/1eqDlsr Curso de Administração de Redes de Computadores http://goo.gl/nXjaXS Neste Curso de SQL aprenda a linguagem universal de banco de dados onde poderá ser aplicada em qualquer SGBD. Para se aprofundar em banco de dados acesse os links da descrição e confira ótimos cursos. Tags: sql cursos gratuitos curso sql banco de dados comandos sql
Views: 1003 Cursos Interativos
auto increment in sql oracle - ( Auto increment field )
 
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auto increment in sql oracle ----------------------------------------------- CREATE table customers ( customer_id int not null, customer_name varchar(50), primary key (customer_id) ); create sequence customer_id minvalue 1 start with 1 cache 10; insert into customers values(customer_id.nextval,'maxwel'); -- to drop sequence drop sequence customer_id
Views: 3679 nechali
ORACLE PL/SQL INTERVIEW :PALINDROME NUMBER PROGRAM
 
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This video tutorial demonstrates on the Oracle PL/SQL interview question of writing a program for finding whether a number or string is palindrome number or string or not, the video explains a very simple and generic approach that can be used to solve this question. You can get the code from our website http://oracleplsqlblog.com/FullBlog/FullBlog/16
Views: 2076 Kishan Mashru
SQL: Extract function
 
03:38
In this tutorial, you'll learn how to make use of extract function. PL/SQL (Procedural Language/Structured Query Language) is Oracle Corporation's procedural extension for SQL and the Oracle relational database. PL/SQL is available in Oracle Database (since version 7), TimesTen in-memory database (since version 11.2.1), and IBM DB2 (since version 9.7).[1] Oracle Corporation usually extends PL/SQL functionality with each successive release of the Oracle Database. PL/SQL includes procedural language elements such as conditions and loops. It allows declaration of constants and variables, procedures and functions, types and variables of those types, and triggers. It can handle exceptions (runtime errors). Arrays are supported involving the use of PL/SQL collections. Implementations from version 8 of Oracle Database onwards have included features associated with object-orientation. One can create PL/SQL units such as procedures, functions, packages, types, and triggers, which are stored in the database for reuse by applications that use any of the Oracle Database programmatic interfaces. PL/SQL works analogously to the embedded procedural languages associated with other relational databases. For example, Sybase ASE and Microsoft SQL Server have Transact-SQL, PostgreSQL has PL/pgSQL (which emulates PL/SQL to an extent), and IBM DB2 includes SQL Procedural Language,[2] which conforms to the ISO SQL’s SQL/PSM standard. The designers of PL/SQL modeled its syntax on that of Ada. Both Ada and PL/SQL have Pascal as a common ancestor, and so PL/SQL also resembles Pascal in several aspects. However, the structure of a PL/SQL package does not resemble the basic Object Pascal program structure as implemented by a Borland Delphi or Free Pascal unit. Programmers can define public and private global data-types, constants and static variables in a PL/SQL package.[3] PL/SQL also allows for the definition of classes and instantiating these as objects in PL/SQL code. This resembles usage in object-oriented programming languages like Object Pascal, C++ and Java. PL/SQL refers to a class as an "Abstract Data Type" (ADT) or "User Defined Type" (UDT), and defines it as an Oracle SQL data-type as opposed to a PL/SQL user-defined type, allowing its use in both the Oracle SQL Engine and the Oracle PL/SQL engine. The constructor and methods of an Abstract Data Type are written in PL/SQL. The resulting Abstract Data Type can operate as an object class in PL/SQL. Such objects can also persist as column values in Oracle database tables. PL/SQL is fundamentally distinct from Transact-SQL, despite superficial similarities. Porting code from one to the other usually involves non-trivial work, not only due to the differences in the feature sets of the two languages,[4] but also due to the very significant differences in the way Oracle and SQL Server deal with concurrency and locking. There are software tools available that claim to facilitate porting including Oracle Translation Scratch Editor,[5] CEITON MSSQL/Oracle Compiler [6] and SwisSQL.[7] The StepSqlite product is a PL/SQL compiler for the popular small database SQLite. PL/SQL Program Unit A PL/SQL program unit is one of the following: PL/SQL anonymous block, procedure, function, package specification, package body, trigger, type specification, type body, library. Program units are the PL/SQL source code that is compiled, developed and ultimately executed on the database. The basic unit of a PL/SQL source program is the block, which groups together related declarations and statements. A PL/SQL block is defined by the keywords DECLARE, BEGIN, EXCEPTION, and END. These keywords divide the block into a declarative part, an executable part, and an exception-handling part. The declaration section is optional and may be used to define and initialize constants and variables. If a variable is not initialized then it defaults to NULL value. The optional exception-handling part is used to handle run time errors. Only the executable part is required. A block can have a label. Package Packages are groups of conceptually linked functions, procedures, variables, PL/SQL table and record TYPE statements, constants, cursors etc. The use of packages promotes re-use of code. Packages are composed of the package specification and an optional package body. The specification is the interface to the application; it declares the types, variables, constants, exceptions, cursors, and subprograms available. The body fully defines cursors and subprograms, and so implements the specification. Two advantages of packages are: Modular approach, encapsulation/hiding of business logic, security, performance improvement, re-usability. They support object-oriented programming features like function overloading and encapsulation. Using package variables one can declare session level (scoped) variables, since variables declared in the package specification have a session scope.
Views: 3387 radhikaravikumar
Dynamic SQL in Stored Procedure
 
09:32
In this video we will discuss, using dynamic sql in a stored procedure and it's implications from sql injection perspective. We will discuss performance implications of using dynamic sql in a stored procedure in a later video. Text version of the video http://csharp-video-tutorials.blogspot.com/2017/04/dynamic-sql-in-stored-procedure.html Slides http://csharp-video-tutorials.blogspot.com/2017/04/dynamic-sql-in-stored-procedure_11.html All SQL Server Text Articles http://csharp-video-tutorials.blogspot.com/p/free-sql-server-video-tutorials-for.html All SQL Server Slides http://csharp-video-tutorials.blogspot.com/p/sql-server.html All SQL Server Tutorial Videos https://www.youtube.com/playlist?list=PL08903FB7ACA1C2FB All Dot Net and SQL Server Tutorials in English https://www.youtube.com/user/kudvenkat/playlists?view=1&sort=dd All Dot Net and SQL Server Tutorials in Arabic https://www.youtube.com/c/KudvenkatArabic/playlists Consider the following stored procedure "spSearchEmployees". We implemented this procedure in Part 139 of SQL Server tutorial. This stored procedure does not have any dynamic sql in it. It is all static sql and is immune to sql injection. Create Procedure spSearchEmployees @FirstName nvarchar(100) = NULL, @LastName nvarchar(100) = NULL, @Gender nvarchar(50) = NULL, @Salary int = NULL As Begin Select * from Employees where (FirstName = @FirstName OR @FirstName IS NULL) AND (LastName = @LastName OR @LastName IS NULL) AND (Gender = @Gender OR @Gender IS NULL) AND (Salary = @Salary OR @Salary IS NULL) End Go Whether you are creating your dynamic sql queries in a client application like ASP.NET web application or in a stored procedure, you should never ever concatenate user input values. Instead you should be using parameters. Notice in the following example, we are creating dynamic sql queries by concatenating parameter values, instead of using parameterized queries. This stored procedure is prone to SQL injection. Let's prove this by creating a "Search Page" that calls this procedure. Create Procedure spSearchEmployeesBadDynamicSQL @FirstName nvarchar(100) = NULL, @LastName nvarchar(100) = NULL, @Gender nvarchar(50) = NULL, @Salary int = NULL As Begin Declare @sql nvarchar(max) Set @sql = 'Select * from Employees where 1 = 1' if(@FirstName is not null) Set @sql = @sql + ' and FirstName=''' + @FirstName + '''' if(@LastName is not null) Set @sql = @sql + ' and LastName=''' + @LastName + '''' if(@Gender is not null) Set @sql = @sql + ' and Gender=''' + @Gender + '''' if(@Salary is not null) Set @sql = @sql + ' and Salary=''' + @Salary + '''' Execute sp_executesql @sql End Go Add a Web Page to the project that we have been working with in our previous video. Name it "DynamicSQLInStoredProcedure.aspx". Copy and paste the HTML and code available on my blog at the following link http://csharp-video-tutorials.blogspot.com/2017/04/dynamic-sql-in-stored-procedure.html At this point, run the application and type the following text in the "Firsname" text and click "Search" button. Notice "SalesDB" database is dropped. Our application is prone to SQL injection as we have implemented dynamic sql in our stored procedure by concatenating strings instead of using parameters. ' Drop database SalesDB -- In the following stored procedure we have implemented dynamic sql by using parameters, so this is not prone to sql injecttion. This is an example for good dynamic sql implementation. Create Procedure spSearchEmployeesGoodDynamicSQL @FirstName nvarchar(100) = NULL, @LastName nvarchar(100) = NULL, @Gender nvarchar(50) = NULL, @Salary int = NULL As Begin Declare @sql nvarchar(max) Declare @sqlParams nvarchar(max) Set @sql = 'Select * from Employees where 1 = 1' if(@FirstName is not null) Set @sql = @sql + ' and [email protected]' if(@LastName is not null) Set @sql = @sql + ' and [email protected]' if(@Gender is not null) Set @sql = @sql + ' and [email protected]' if(@Salary is not null) Set @sql = @sql + ' and [email protected]' Execute sp_executesql @sql, N'@FN nvarchar(50), @LN nvarchar(50), @Gen nvarchar(50), @sal int', @[email protected], @[email protected], @[email protected], @[email protected] End Go On the code-behind page, use stored procedure spSearchEmployeesGoodDynamicSQL instead of spSearchEmployeesBadDynamicSQL. We do not have to change any other code. At this point run the application one more time and type the following text in the "Firstname" textbox and click the "Search" button. ' Drop database SalesDB -- Notice "SalesDB" database is not dropped, So in this case our application is not succeptible to SQL injection attack. Summary : Whether you are creating dynamic sql in a client application (like a web application) or in a stored procedure always use parameters instead of concatnating strings. Using parameters to create dynamic sql statements prevents sql injection.
Views: 28026 kudvenkat
Oracle UPPER Function
 
02:32
https://www.databasestar.com/oracle-upper-lower/ The Oracle UPPER function is used to convert a string to an uppercase value. It capitalises a string value. It’s useful for comparing text or string values that may have mixed case, such as user input or data from different tables. The opposite of the UPPER function is the LOWER function (which converts to lower case). The syntax of UPPER is: UPPER(input_string) The input_string is the string value to convert to an upper case value. It can be any of CHAR, VARCHAR2, NCHAR, NVARCHAR2, CLOB, or NCLOB. The return type is the same as the input type. You can use the UPPER function in a WHERE clause. However, unless you have a function-based index on the column, any indexes won’t be used. For example, if you have an index on first_name, a query that uses “WHERE UPPER(first_name)” won’t use this index. You’ll have to create an index on the UPPER(first_name) for this to be used. It’s not required, but it’s just something to keep in mind. For more information about the Oracle UPPER function, including all of the SQL shown in this video and the examples, read the related article here: https://www.databasestar.com/oracle-upper-lower/
Views: 94 Database Star
SQL 21 NVL function Ae47
 
04:01
Use of NVL in oracle to deal with null values
Views: 1194 hammadshams
SQL Aggregation queries using Group By, Sum, Count and Having
 
10:01
From SQL Queries Joes 2 Pros (Vol2) ch4.1. Learn up to write aggregated queries.
Views: 162521 Joes2Pros SQL Trainings
ORACLE SQL AND PL/SQL INTERVIEW QUESTION : PRINT 1 TO 5 USING SQL
 
04:19
This video explains on the oracle sql interview question to print 1 to 5 on the screen using only oracle sql statement. The solution is given using the union operator and also by using the hierarchical queries.
Views: 2360 Kishan Mashru
Oracle REPLACE Function
 
03:55
https://www.databasestar.com/oracle-replace/ The Oracle REPLACE function is a string manipulation function that allows you to replace one text string with another. It can be a whole word or sentence, or even a single value. The syntax of the REPLACE function is: REPLACE ( whole_string, string_to_replace, [replacement_string]) To use this function, the parameters are: - whole_string (mandatory): This is the string that will be checked for the characters to be replaced. - string_to_replace (mandatory): This is the string that will be searched for within whole_string. - replacement_string (optional): This is the string that will be used to replace occurrences of string_to_replace. Because the last parameter is optional, if it is not specified, then the Oracle REPLACE function removes all occurrences of string_to_replace. You can replace carriage returns with REPLACE, but you’ll need to use the CHR function. You can replace NULL values in Oracle, but this is best done with another function such as NVL, rather than REPLACE. If you want to replace multiple characters, you can do this using nested REPLACE functions or a REGEXP_REPLACE function. For more information about the Oracle REPLACE function, including all of the SQL shown in this video and the examples, read the related article here: https://www.databasestar.com/oracle-replace/
Views: 972 Database Star
FIX :ORA-01017: invalid username/password; logon denied
 
03:49
copy and paste - sqlplus "/as sysdba" COPY PASTE BELOW LINE ALTER USER user_name IDENTIFIED BY new_password; ** user_name - example SYSTEM new_password - ENTER NEW PASSWORD Blog - maheshkarandeprojects.wordpress.com MUSIC : You're free to use this song and monetize your video, but you must include the following in your video description: Essence by Audionautix is licensed under a Creative Commons Attribution license (https://creativecommons.org/licenses/by/4.0/) Artist: http://audionautix.com/ Keywords: ora-01017 invalid username/password logon denied,ora-01017 invalid username/password logon denied 12c,ora-01017 invalid username/password logon denied oracle 12c,ora-01017 invalid username/password logon denied sap,ora-01017 invalid username/password logon denied ora-02063 preceding line from,ora-01017 invalid username/password logon denied rman,ora-01017 invalid username/password logon denied oracle 10g,ora-01017 invalid username/password logon denied standby database,ora-01017 invalid username/password logon denied (dbd error ocisessionbegin),ora-01017 invalid username/password logon denied dblink,ora-01017 invalid username/password logon denied brtools,ora-01017 invalid username/password logon denied brconnect,ora-01017 invalid username/password logon denied brbackup,ora-01017 invalid username/password logon denied bi publisher,ora-01017 invalid username/password logon denied burleson,ora-01017 invalid username/password logon denied sap backup,br0301e ora-01017 invalid username/password logon denied,log by0= ora-01017 invalid username/password logon denied,sap brtools ora-01017 invalid username/password logon denied,dg broker ora-01017 invalid username/password logon denied,ora-01017 invalid username/password logon denied c#,ora-01017 invalid username/password logon denied change password,ora-01017 invalid username/password logon denied connection string,ora-01017 invalid username/password logon denied cloud control,ora-01017 invalid username/password logon denied config tool,ora-01017 invalid username/password logon denied the connect descriptor was,ora-01017 invalid username/password logon denied oracle client,ora 01017 invalid username password logon denied error code 1017,ora-01017 invalid username/password logon denied system copy,ora-01017 invalid username/password logon denied at oci call ocisessionbegin,ora-01017 invalid username/password logon denied dgmgrl,ora-01017 invalid username/password logon denied db13,ora-01017 invalid username/password logon denied during switchover,data guard ora-01017 invalid username/password logon denied,ora-01017 invalid username/password logon denied discoverer,ora-01017 invalid username/password logon denied dbca,ora-01017 invalid username/password logon denied dbsnmp,ora-01017 invalid username/password logon denied switchover data guard,ora 01017 invalid username password logon denied enterprise manager,ora-01017 invalid username/password logon denied external user,ora-01017 invalid username/password logon denied emca,ora-01017 invalid username/password logon denied expdp,ora-01017 invalid username/password logon denied error,ora-01017 invalid username/password logon denied expired,ora 01017 invalid username password logon denied identified externally,ora-01017 invalid username/password logon denied in eclipse,ora-01017 invalid username/password logon denied for sys user,ora-01017 invalid username/password logon denied for sys,ora-01017 invalid username/password logon denied forms,ora-01017 invalid username/password logon denied for dblink,ora 01017 invalid username password logon denied oracle forms,failed ora-01017 invalid username/password logon denied,test failed ora-01017 invalid username/password logon denied jdeveloper,authentication failed ora-01017 invalid username/password logon denied,brconnect failed ora-01017 invalid username/password logon denied,failure test failed ora 01017 invalid username password logon denied,ora-01017 invalid username/password logon denied data guard,error ora-01017 invalid username/password logon denied dataguard,glassfish ora-01017 invalid username/password logon denied,oracle data guard ora-01017 invalid username/password logon denied,data guard switchover ora-01017 invalid username/password logon denied,ora-01017 invalid username/password logon denied hibernate,ora-01017 invalid username/password logon denied hr,how to resolve ora-01017 invalid username/password logon denied,how to solve ora-01017 invalid username/password logon denied,ora-28001 the password has expired ora-01017 invalid username/password logon denied,ora-01017 invalid username/password logon denied in 12c,ora-01017 invalid username/password logon denied in sql developer,ora-01017 invalid username/password logon denied in sap,ora-01017 invalid
Views: 10238 Mahesh Karande
SQL 065 Scalar Functions, COALESCE or How do I get first non-NULL value?
 
01:11
Explains the Scalar Function COALESCE or How do I get the first non-NULL value. From http://ComputerBasedTrainingInc.com SQL Course. Learn by doing SQL commands for ANSI Standard SQL, Access, DB2, MySQL, Oracle, PostgreSQL, and SQL Server.
Views: 776 cbtinc
KISS series on Analytics: 05 Dealing with null
 
04:14
Welcome to the KISS video series. Solving problems that typically required complicated SQL in the past, that can now be easily solved with Analytic SQL syntax. In this session, we look at using our ranking functions when nulls are present. Scripts: https://livesql.oracle.com/apex/livesql/s/cokpdete3hiy3jo0yzoa4eerz Watch the entire Analytics playlist at https://www.youtube.com/playlist?list=PLJMaoEWvHwFJDyhMLCkNSSUQWw9waFkIj ========================================­­============== Copyright © 2015 Oracle and/or its affiliates. Oracle is a registered trademark of Oracle and/or its affiliates. All rights reserved. Other names may be registered trademarks of their respective owners. Oracle disclaims any warranties or representations as to the accuracy or completeness of this recording, demonstration, and/or written materials (the “Materials”). The Materials are provided “as is” without any warranty of any kind, either express or implied, including without limitation warranties or merchantability, fitness for a particular purpose, and non-infringement.
Views: 1335 Connor McDonald
PL/SQL: Without using Length function
 
06:22
In this tutorial, you'll learn how to get the length of a string PL/SQL (Procedural Language/Structured Query Language) is Oracle Corporation's procedural extension for SQL and the Oracle relational database. PL/SQL is available in Oracle Database (since version 7), TimesTen in-memory database (since version 11.2.1), and IBM DB2 (since version 9.7).[1] Oracle Corporation usually extends PL/SQL functionality with each successive release of the Oracle Database. PL/SQL includes procedural language elements such as conditions and loops. It allows declaration of constants and variables, procedures and functions, types and variables of those types, and triggers. It can handle exceptions (runtime errors). Arrays are supported involving the use of PL/SQL collections. Implementations from version 8 of Oracle Database onwards have included features associated with object-orientation. One can create PL/SQL units such as procedures, functions, packages, types, and triggers, which are stored in the database for reuse by applications that use any of the Oracle Database programmatic interfaces. PL/SQL works analogously to the embedded procedural languages associated with other relational databases. For example, Sybase ASE and Microsoft SQL Server have Transact-SQL, PostgreSQL has PL/pgSQL (which emulates PL/SQL to an extent), and IBM DB2 includes SQL Procedural Language,[2] which conforms to the ISO SQL’s SQL/PSM standard. The designers of PL/SQL modeled its syntax on that of Ada. Both Ada and PL/SQL have Pascal as a common ancestor, and so PL/SQL also resembles Pascal in several aspects. However, the structure of a PL/SQL package does not resemble the basic Object Pascal program structure as implemented by a Borland Delphi or Free Pascal unit. Programmers can define public and private global data-types, constants and static variables in a PL/SQL package.[3] PL/SQL also allows for the definition of classes and instantiating these as objects in PL/SQL code. This resembles usage in object-oriented programming languages like Object Pascal, C++ and Java. PL/SQL refers to a class as an "Abstract Data Type" (ADT) or "User Defined Type" (UDT), and defines it as an Oracle SQL data-type as opposed to a PL/SQL user-defined type, allowing its use in both the Oracle SQL Engine and the Oracle PL/SQL engine. The constructor and methods of an Abstract Data Type are written in PL/SQL. The resulting Abstract Data Type can operate as an object class in PL/SQL. Such objects can also persist as column values in Oracle database tables. PL/SQL is fundamentally distinct from Transact-SQL, despite superficial similarities. Porting code from one to the other usually involves non-trivial work, not only due to the differences in the feature sets of the two languages,[4] but also due to the very significant differences in the way Oracle and SQL Server deal with concurrency and locking. There are software tools available that claim to facilitate porting including Oracle Translation Scratch Editor,[5] CEITON MSSQL/Oracle Compiler [6] and SwisSQL.[7] The StepSqlite product is a PL/SQL compiler for the popular small database SQLite. PL/SQL Program Unit A PL/SQL program unit is one of the following: PL/SQL anonymous block, procedure, function, package specification, package body, trigger, type specification, type body, library. Program units are the PL/SQL source code that is compiled, developed and ultimately executed on the database. The basic unit of a PL/SQL source program is the block, which groups together related declarations and statements. A PL/SQL block is defined by the keywords DECLARE, BEGIN, EXCEPTION, and END. These keywords divide the block into a declarative part, an executable part, and an exception-handling part. The declaration section is optional and may be used to define and initialize constants and variables. If a variable is not initialized then it defaults to NULL value. The optional exception-handling part is used to handle run time errors. Only the executable part is required. A block can have a label. Package Packages are groups of conceptually linked functions, procedures, variables, PL/SQL table and record TYPE statements, constants, cursors etc. The use of packages promotes re-use of code. Packages are composed of the package specification and an optional package body. The specification is the interface to the application; it declares the types, variables, constants, exceptions, cursors, and subprograms available. The body fully defines cursors and subprograms, and so implements the specification. Two advantages of packages are: Modular approach, encapsulation/hiding of business logic, security, performance improvement, re-usability. They support object-oriented programming features like function overloading and encapsulation. Using package variables one can declare session level (scoped) variables, since variables declared in the package specification have a session scope.
Views: 2042 radhikaravikumar
IS NULL SQL
 
01:09
שימוש בשפת SQL IS NULL
Views: 107 Gidi Aviezer
Set business rules with check constraints in oracle.
 
19:01
Check constraint is used to validate data according to business logic, whether it be limiting the value range or allowing some specific string format or data format. This oracle tutorial is about how to add, remove, enable or disable check constraints in oracle 12c. Here are the list of ddl commands for check constraint: ALTER TABLE table_name ADD CONSTRAINT constraint_name CHECK column_name condition [DISABLE]; ALTER TABLE table_name DROP CONSTRAINT constraint_name; ALTER TABLE table_name ENABLE CONSTRAINT constraint_name; ALTER TABLE table_name DISABLE CONSTRAINT constraint_name;
Views: 474 Subhroneel Ganguly
KISS series on Analytics: 18 Lag, Lead - Dealing with null
 
03:31
Welcome to the KISS video series. Solving problems that typically required complicated SQL in the past, that can now be easily solved with Analytic SQL syntax. In this session, we look at using our IGNORE NULLS extension for lag and lead to solve the "fill in the gaps" problem when rows are missing data. Scripts: https://livesql.oracle.com/apex/livesql/file/content_C0SXW1PG37G8REE0VTQH5LXJ8.html Watch the entire Analytics playlist at https://www.youtube.com/playlist?list=PLJMaoEWvHwFJDyhMLCkNSSUQWw9waFkIj ========================================­­============== Copyright © 2015 Oracle and/or its affiliates. Oracle is a registered trademark of Oracle and/or its affiliates. All rights reserved. Other names may be registered trademarks of their respective owners. Oracle disclaims any warranties or representations as to the accuracy or completeness of this recording, demonstration, and/or written materials (the “Materials”). The Materials are provided “as is” without any warranty of any kind, either express or implied, including without limitation warranties or merchantability, fitness for a particular purpose, and non-infringement.
Views: 549 Connor McDonald
SQL: TRIM function
 
06:35
In this tutorial, you'll learn how to use trim function PL/SQL (Procedural Language/Structured Query Language) is Oracle Corporation's procedural extension for SQL and the Oracle relational database. PL/SQL is available in Oracle Database (since version 7), TimesTen in-memory database (since version 11.2.1), and IBM DB2 (since version 9.7).[1] Oracle Corporation usually extends PL/SQL functionality with each successive release of the Oracle Database. PL/SQL includes procedural language elements such as conditions and loops. It allows declaration of constants and variables, procedures and functions, types and variables of those types, and triggers. It can handle exceptions (runtime errors). Arrays are supported involving the use of PL/SQL collections. Implementations from version 8 of Oracle Database onwards have included features associated with object-orientation. One can create PL/SQL units such as procedures, functions, packages, types, and triggers, which are stored in the database for reuse by applications that use any of the Oracle Database programmatic interfaces. PL/SQL works analogously to the embedded procedural languages associated with other relational databases. For example, Sybase ASE and Microsoft SQL Server have Transact-SQL, PostgreSQL has PL/pgSQL (which emulates PL/SQL to an extent), and IBM DB2 includes SQL Procedural Language,[2] which conforms to the ISO SQL’s SQL/PSM standard. The designers of PL/SQL modeled its syntax on that of Ada. Both Ada and PL/SQL have Pascal as a common ancestor, and so PL/SQL also resembles Pascal in several aspects. However, the structure of a PL/SQL package does not resemble the basic Object Pascal program structure as implemented by a Borland Delphi or Free Pascal unit. Programmers can define public and private global data-types, constants and static variables in a PL/SQL package.[3] PL/SQL also allows for the definition of classes and instantiating these as objects in PL/SQL code. This resembles usage in object-oriented programming languages like Object Pascal, C++ and Java. PL/SQL refers to a class as an "Abstract Data Type" (ADT) or "User Defined Type" (UDT), and defines it as an Oracle SQL data-type as opposed to a PL/SQL user-defined type, allowing its use in both the Oracle SQL Engine and the Oracle PL/SQL engine. The constructor and methods of an Abstract Data Type are written in PL/SQL. The resulting Abstract Data Type can operate as an object class in PL/SQL. Such objects can also persist as column values in Oracle database tables. PL/SQL is fundamentally distinct from Transact-SQL, despite superficial similarities. Porting code from one to the other usually involves non-trivial work, not only due to the differences in the feature sets of the two languages,[4] but also due to the very significant differences in the way Oracle and SQL Server deal with concurrency and locking. There are software tools available that claim to facilitate porting including Oracle Translation Scratch Editor,[5] CEITON MSSQL/Oracle Compiler [6] and SwisSQL.[7] The StepSqlite product is a PL/SQL compiler for the popular small database SQLite. PL/SQL Program Unit A PL/SQL program unit is one of the following: PL/SQL anonymous block, procedure, function, package specification, package body, trigger, type specification, type body, library. Program units are the PL/SQL source code that is compiled, developed and ultimately executed on the database. The basic unit of a PL/SQL source program is the block, which groups together related declarations and statements. A PL/SQL block is defined by the keywords DECLARE, BEGIN, EXCEPTION, and END. These keywords divide the block into a declarative part, an executable part, and an exception-handling part. The declaration section is optional and may be used to define and initialize constants and variables. If a variable is not initialized then it defaults to NULL value. The optional exception-handling part is used to handle run time errors. Only the executable part is required. A block can have a label. Package Packages are groups of conceptually linked functions, procedures, variables, PL/SQL table and record TYPE statements, constants, cursors etc. The use of packages promotes re-use of code. Packages are composed of the package specification and an optional package body. The specification is the interface to the application; it declares the types, variables, constants, exceptions, cursors, and subprograms available. The body fully defines cursors and subprograms, and so implements the specification. Two advantages of packages are: Modular approach, encapsulation/hiding of business logic, security, performance improvement, re-usability. They support object-oriented programming features like function overloading and encapsulation. Using package variables one can declare session level (scoped) variables, since variables declared in the package specification have a session scope.
Views: 2605 radhikaravikumar
ORACLE SQL AND PL/SQL INTERVIEW QUESTION : SUBQUERY WITH IN / EXISTS OR SELF JOIN
 
09:31
This video demonstrates the solution of the oracle sql interview question like, find the employees where there manager's salary is more than 15000. This is a classic example of using a subquery or a self join to get the result.
Views: 2300 Kishan Mashru
How to use type 4 jdbc driver in eclipse(oracle 11g or 10g)
 
03:06
This Video shows you "How to use type 4 jdbc driver in eclipse(oracle 11g or 10g)" ---------------------------------------------------------------------------------- Before you do this you should have ------------------------------------------------------ (1) Oracle 11g or 10g installed in your pc (2) Eclipse installed in your pc (3) Write the jdbc program (4) Execute the query in SQL Prompt that you are used in your jdbc program --------------------------------------------------------------------------- STEPS 1. Before running the jdbc program, just in case make sure the query executes correctly 2. write the program( i will provide the jdbc program code below) 3. go to Eclipse 4. 'Right Click' on JRE System Library(Build path --~ Configure Build path--~ Add External Jars--~ *choose ojdbc 6 jar -----C:\oraclexe\app\oracle\product\11.2.0\server\jdbc\lib---- (just search for ojdbc6 jar in oracle path or (oraclexe) path) 5. click open 6. click Apply 7. click Apply and close --------------------------------------------- sample jdbc type 4 driver program to execute --------------------------------------------- package com.nt.jdbc; import java.sql.Connection; import java.sql.DriverManager; import java.sql.ResultSet; import java.sql.SQLException; import java.sql.Statement; import java.util.Scanner; public class FourthDriver { public static void main(String[] args) { Scanner sc=null; String user=null,pass=null; Connection con=null; ResultSet rs=null; Statement st=null; String query=null; int count=0; try { sc=new Scanner(System.in); if(sc!=null) { System.out.println("Enter Username: "); user=sc.nextLine(); System.out.println("Enter password: "); pass=sc.nextLine(); } user="'"+user+"'"; pass="'"+pass+"'"; Class.forName("oracle.jdbc.driver.OracleDriver"); con=DriverManager.getConnection("jdbc:oracle:thin:@localhost:1521:xe","system","manager"); if(con!=null) st=con.createStatement(); /*SELECT COUNT(*) FROM USERLIST WHERE UNAME='jaya' AND PWD='123';*/ query="SELECT COUNT(*) FROM USERLIST WHERE UNAME="+user+" AND PWD="+pass; System.out.println(query); if(st!=null) rs=st.executeQuery(query); if(rs!=null) { if(rs.next()) count=rs.getInt(1); System.out.println(count); } if(count==0) System.out.println("Invalid Credentials"); else System.out.println("Valid Credentials"); }//try catch(SQLException se){ se.printStackTrace(); System.out.println("Record insertion failed"); } // catch(ClassNotFoundException cnf){ // System.out.println("Record insertion failed"); // cnf.printStackTrace(); // // } catch(Exception e){ System.out.println("Record insertion failed"); e.printStackTrace(); } finally { try { if(rs!=null) rs.close(); }catch(SQLException se) { se.printStackTrace(); } try { if(st!=null) st.close(); }catch(SQLException se) { se.printStackTrace(); } try { if(con!=null) con.close(); }catch(SQLException se) { se.printStackTrace(); } try { if(sc!=null) sc.close(); }catch(Exception se) { se.printStackTrace(); } }//finally }//method }//class ---------------------------------------------------------------------- ask in comments if you have any doubts ---------------------------------------------------------------------- ---------------------------------------------------------------------------------------------------------- Visit www.99techbuzz.com for more Articles like this Video :) ________________________________________________________________ Subscribe to the Channel http://www.youtube.com/channel/UCndUIPHik4T497b2sC_A6sw?sub_confirmation=1 ---------------------------------------------------------------------------------------------------------- For more tips and tricks like The Facebook Page https://www.facebook.com/99techbuzz/ ----------------------------------------------------------------------------------------------------------
Views: 392 99TechBuzz
SQL Tutorial - 13: Inserting Data Into a Table From Another Table
 
07:00
In this tutorial we'll learn to use the INSERT Query to copy data from one table into another.
Views: 235244 The Bad Tutorials

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