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EXIST Function in SQL
 
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Join Discussion: http://www.techtud.com/video-lecture/exist-function-sql IMPORTANT LINKS: 1) Official Website: http://www.techtud.com/ 2) Virtual GATE: http://virtualgate.in/login/index.php Both of the above mentioned platforms are COMPLETELY FREE, so feel free to Explore, Learn, Practice & Share! Our Social Media Links: Facebook Page: https://www.facebook.com/techtuduniversity Facebook Group: https://www.facebook.com/groups/virtualgate Google+ Page: https://plus.google.com/+techtud/posts Last but not the least, SUBSCRIBE our YouTube channel to stay updated about the regularly uploaded new videos.
Views: 35880 Techtud
How to use exists statement
 
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Hello Friends In this video i'm going to show you how to use exist in subquery step by step.
Views: 5928 OCP Technology
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: 1959 Kishan Mashru
IN VS EXISTS VS JOIN, performance
 
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This video demonstrates the performance effects of using an exists clause instead of an IN clause, also it shows how we can update a simple sub query having an IN clause with an EXISTS or JOIN statement. It also shows that joining would consider the null data, where as an IN clause would neglect null values. If you want more such videos of exciting and amazing 'difference between' concepts, check out the links below : union and union all : https://youtu.be/n9FqQOd8liY char and varchar2 : https://youtu.be/039qzwjWf4k replace and translate : https://youtu.be/HKYF77BGzOE procedure and function : https://youtu.be/q3LmOenL120 rank and dense_rank : https://youtu.be/WGSX998hZ9M delete and truncate : https://youtu.be/u76wMm2byXo %type and %rowtype : https://youtu.be/MlLUFeZ_3eM
Views: 11794 Kishan Mashru
EXISTS Condition in Oracle Database
 
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#Exists oracle exists vs in, if exists in oracle, oracle not exists vs not in, difference between in and exists in oracle, case when exists oracle, oracle check if record exists, if not exists in oracle, oracle update where exists
Views: 18 Adam Tech
The SQL EXISTS clause
 
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How to use the EXISTS clause in SQL. For beginners.
Views: 22717 Database by Doug
PL/SQL tutorial 60: Collection Method EXISTS in Oracle Database by Manish Sharma
 
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RebellionRider presents you the latest PL/SQL Tutorial 60 on Collection method EXISTS by Manish Sharma ------------------------------------------------------------------------ ►►►LINKS◄◄◄ Blog : http://bit.ly/exists-function Previous Tutorial ► ------------------------------------------------------------------------- ►Make sure you SUBSCRIBE and be the 1st one to see my videos! ------------------------------------------------------------------------- ►►►Find me on Social Media◄◄◄ Follow What I am up to as it happens on https://twitter.com/rebellionrider http://instagram.com/rebellionrider https://plus.google.com/+Rebellionrider http://in.linkedin.com/in/mannbhardwaj/ ___Facebook Official Page of Manish Sharma___ https://www.facebook.com/TheRebellionRider/ ___Facebook Official Page of RebellionRider.com___ https://www.facebook.com/RebellionRider.official/ You can also Email me at for E-mail address please check the About section Please please LIKE and SHARE my videos it makes me happy. Thanks for liking, commenting, sharing and watching more of our videos This is Manish from RebellionRider.com ♥ I LOVE ALL MY VIEWERS AND SUBSCRIBERS
Views: 7009 Manish Sharma
Difference between Case and Decode
 
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This video tutorial explains on how case statement and decode function are different from each other. Though both of them are used in giving the if-then-else conditional functionality to sql statement, they differ much from each other, this video will walk through each of the difference with appropriate examples. If you want more such videos of exciting and amazing 'difference between' concepts, check out the links below : char and varchar2 : https://youtu.be/039qzwjWf4k replace and translate : https://youtu.be/HKYF77BGzOE procedure and function : https://youtu.be/q3LmOenL120 in and exists : https://youtu.be/REX4IjRYlFw rank and dense_rank : https://youtu.be/WGSX998hZ9M delete and truncate : https://youtu.be/u76wMm2byXo %type and %rowtype : https://youtu.be/MlLUFeZ_3eM
Views: 11913 Kishan Mashru
SQL  subqueries - Lesson 8 (EXISTS, NOT EXISTS, ALL, ANY)
 
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Subqueries are nested queries with another main query. Learn how to use subqueries as part of main queries and with aggregate functions using EXISTS | NOT EXISTS, ANY | ALL Links to all SQL Lessons: SQL Lesson 8 - Subqueries https://youtu.be/7DxuPcx-mRI SQL Lesson 6 - JOIN (INNER, LEFT, RIGHT) https://youtu.be/_NrRRzCjFGE SQL Lesson 5 - Constraints (Default, Primary Key, Foreign Key …) https://youtu.be/BtmHISzqYjQ SQL Lesson 4 - GROUP BY, HAVING, String Functions https://youtu.be/zClzY2fE2fA SQL Lesson 3 - Aggregate Functions SUM, AVG etc. https://youtu.be/w1F0UgsYfis SQL Lesson 2 - Logical, Conditional and Arithmetic Operators https://youtu.be/OpRO1atoe84 SQL Lesson 1 - Basics of SQL Queries https://youtu.be/pJCyTBkoIKA
Views: 85 masti supreme
35. SQL EXISTS, how EXISTS differ from IN
 
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The SQL EXISTS clause How to use the EXISTS clause in SQL. For beginners. How to use exists statement Hello Friends In this video i'm going to show you how to use exist in subquery step by step.
Views: 687 ProSchool
SQL EXISTS VE NOT EXISTS KULLANIMI
 
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SQL: EXISTS Condition This SQL tutorial explains how to use the SQL EXISTS condition with syntax and examples. Click the Try It button next to an example to test it for yourself in our SQL Editor. Description The SQL EXISTS condition is used in combination with a subquery and is considered to be met, if the subquery returns at least one row. It can be used in a SELECT, INSERT, UPDATE, or DELETE statement.
Views: 52 gracia heys
ORACLE SQL AND PL/SQL INTERVIEW QUESTION : SUBQUERY WITH IN / EXISTS OR SELF JOIN
 
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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: 2527 Kishan Mashru
Difference between IN and EXISTS clause in database
 
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Difference between IN and EXISTS clause in database
Views: 623 Techie Savy
ALL, ANY and SOME Comparison Conditions in SQL
 
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This video demonstrates the use of the ALL, ANY and SOME comparison conditions in SQL. You don't see them used in Oracle very often, probably because there are functionally equivalent statements that are in more common use instead. For more information see: https://oracle-base.com/articles/misc/all-any-some-comparison-conditions-in-sql Website: https://oracle-base.com Blog: https://oracle-base.com/blog Twitter: https://twitter.com/oraclebase Cameo by Jorge Rimblas (actually, his children :) ) Blog: http://rimblas.com/blog/ Twitter: https://twitter.com/rimblas Cameo appearances are for fun, not an endorsement of the content of this video.
Views: 12477 ORACLE-BASE.com
SQL Tutorial for beginners: Difference Between IN and EXISTS Operators in Oracle
 
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Difference Between IN and EXISTS Operators in Oracle SQL Tutorial SQL Tutorial for beginners PLSQL Tutorial PLSQL Tutorial for beginners PL/SQL Tutorial PL SQL Tutorial PL SQL Tutorial for beginners PL/SQL Tutorial for beginners Oracle SQL Tutorial
Views: 591 TechLake
Lesson 10 - Query Aliases and ORDER BY (Oracle SQL Certification)
 
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In this lesson you'll learn about Ordering, Concatenating and Aliasing Query Results
Views: 3241 Imtiaz Ahmad
Let's Learn SQL! Lesson 96: The Important of ELSE in Case Statements
 
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Explore SQL with Tom Coffing of Coffing Data Warehousing! In this lesson, learn how important an ELSE is within a Case Statement!
Oracle Operators in Oracle Database | Oracle Tutorial for Beginners
 
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Oracle Operators in Oracle Database | Oracle Tutorial for Beginners Oracle Operators BETWEEN AND . NOT BETWEEN AND IS NULL and IS NOT NULL LIKE Operator in Oracle NOT LIKE Operators in Oracle IN and NOT IN Oracle SQL Oracle tutorials for Beginners oracle query between two timestamps oracle between inclusive oracle sql between two dates with time oracle between exclusive sql between dates sql between datetime sql between inclusive or exclusive between clause in oracle for date oracle not in vs not exists oracle not exists in condition in oracle oracle sql not in subquery oracle not in null if not exists in oracle not equal to in oracle not like in oracle how to select null values in oracle oracle case is null oracle compare null values in where clause oracle sql not null or empty oracle is not null oracle case when not null then how to handle null in case statement in oracle is null in oracle not like in oracle with multiple values oracle not like wildcard oracle sql like multiple values if not in oracle pl sql sql query not like multiple values how to pass parameter in like operator in oracle regexp_like in oracle oracle not equal
Views: 371 Oracle PL/SQL World
SQL Error ORA-00942 Table or View Does Not Exist in Oracle Database
 
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How to use Tab View (Data Dictionary) of Oracle Database to solve the SQL Error ORA-00942 Table or View Does Not Exist error in Oracle Database ------------------------------------------------------------------------ ►►►LINKS◄◄◄ Blog: http://bit.ly/ora-00942 Previous Tutorial ► ------------------------------------------------------------------------- ►Make sure you SUBSCRIBE and be the 1st one to see my videos! ------------------------------------------------------------------------- ►►►Find me on Social Media◄◄◄ Follow What I am up to as it happens on https://twitter.com/rebellionrider http://instagram.com/rebellionrider https://plus.google.com/+Rebellionrider http://in.linkedin.com/in/mannbhardwaj/ ___Facebook Official Page of Manish Sharma___ https://www.facebook.com/TheRebellionRider/ ___Facebook Official Page of RebellionRider.com___ https://www.facebook.com/RebellionRider.official/ You can also Email me at for E-mail address please check the About section Please please LIKE and SHARE my videos it makes me happy. Thanks for liking, commenting, sharing and watching more of our videos This is Manish from RebellionRider.com ♥ I LOVE ALL MY VIEWERS AND SUBSCRIBERS
Views: 6517 Manish Sharma
IN v/s EXISTS v/s JOIN, which one will give better performance under what condition?
 
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This video demonstrates the performance effects of using an exists clause instead of an IN clause, also it shows how we can update a simple sub query having an IN clause with an EXISTS or JOIN statement. It also shows that joining would consider the null data, where as an IN clause would neglect null values.
Views: 1065 Kishan Mashru
SQL EXISTS() Existential Subqueries
 
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Desmonstrates SQL existential subqueries.
Views: 20596 Jamie King
DIFFERENCES BETWEEN IN AND EXISTS OPERATOR
 
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IN AND EXISTS OPERATORS
Views: 2196 SAINAATTH PITTLA
SQL IN and NOT IN
 
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Jamie King of Neumont University demonstrating NOT IN vs. doing several comparisons with equals and or.
Views: 9290 Jamie King
Условия в SQL и условные SQL запросы CASE, WHEN, THEN, ELSE , END в базах данных SQLite
 
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Помощь проекту: WMR: R288272666982 WMZ: Z293550531456 Яндекс.Деньги: 410011531129223 Рубрика SQLite на сайте: http://zametkinapolyah.ru/zametki-o-mysql/sqlite/ Паблик блога в ВК: https://vk.com/zametkinapolyah Тематическая группа в ВК: https://vk.com/zametki_bd -- Условные выражения CASE, WHEN, THEN, ELSE, END в SQL /* Условные выражения, состоящие из CASE, WHEN, THEN и ELSE полезны в тех случаях, когда нужно осуществить ряд проверок и получить конечный результат в зависимости от исхода этих проверок. По сути, CASE является SQL оператором, а ключевые слова WHEN и THEN позволяют задавать несколько условия для проверки, теоретически количество этих условий может быть бесконечным. Выражение с оператором CASE имеют две формы записи, но в любом случае условное выражение в SQL завершается ключевым словом END. */ -- 1 вариант CASE WHEN первое условие THEN первое возвращаемое значение WHEN второе условие THEN второе возвращаемое значение … WHEN энное условие THEN энное возвращаемое значение [ELSE возвращаемое значение, если условие не будет выполнено] END -- 2 вариант CASE первое значение, которое хотим проверить WHEN первое значение, с которым сравниваем THEN первое значение, которое возвращаем WHEN второе значение, с которым сравниваем THEN второе значение, которое возвращаем … WHEN энное значение, с которым сравниваем THEN энное значение, которое возвращаем [ELSE возвращаемое значение, если условие не будет выполнено] END -- Для начала рассмотрим два простых примера CREATE TABLE booltable (a,b); INSERT INTO booltable VALUES (1,0); SELECT * FROM booltable; -- 1 вариант выражения CASE в SQL SELECT CASE WHEN a==1 THEN 'true' ELSE 'false' END as typeColA, CASE WHEN b THEN 'true' ELSE 'false' END as typeColB FROM booltable; -- 2 вариант выражения CASE в SQL SELECT CASE a WHEN 1 THEN 'true' ELSE 'false' END AS boolA, CASE b WHEN 1 THEN 'true' ELSE 'false' END AS boolB FROM booltable;
VIEWS IN ORACLE SQL WITH EXAMPLES
 
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This video explains about views in Oracle SQL, views are integral part of any database, and its important to clearly understand views to work with them. Views are named and stored sql statements which would be executed once we call the view, views in whole do not store the data except if its a Materialized view. Views are widely used in day to day programming and can be useful in various cases, we discussed about all those cases in this video. If you would like to learn more on materialized view, visit the below videos https://youtu.be/7PklhTCNxxw https://youtu.be/EDf8Pk-x_nA If you want to know the difference between views and Materialized view, visit https://youtu.be/BnNKws_7_jc Visit our blog at www.oracleplsqlblog.com All out youtube videos: www.youtube.com/c/kishanmashru
Views: 1408 Kishan Mashru
Subqueries in sql   Part 59
 
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In this video we will discuss about subqueries in sql server. Let us understand subqueris with an example. Please create the required tables and insert sample data using the script below. Create Table tblProducts ( [Id] int identity primary key, [Name] nvarchar(50), [Description] nvarchar(250) ) Create Table tblProductSales ( Id int primary key identity, ProductId int foreign key references tblProducts(Id), UnitPrice int, QuantitySold int ) Insert into tblProducts values ('TV', '52 inch black color LCD TV') Insert into tblProducts values ('Laptop', 'Very thin black color acer laptop') Insert into tblProducts values ('Desktop', 'HP high performance desktop') Insert into tblProductSales values(3, 450, 5) Insert into tblProductSales values(2, 250, 7) Insert into tblProductSales values(3, 450, 4) Insert into tblProductSales values(3, 450, 9) Write a query to retrieve products that are not at all sold? This can be very easily achieved using subquery as shown below. Select [Id], [Name], [Description] from tblProducts where Id not in (Select Distinct ProductId from tblProductSales) Most of the times subqueries can be very easily replaced with joins. The above query is rewritten using joins and produces the same results. Select tblProducts.[Id], [Name], [Description] from tblProducts left join tblProductSales on tblProducts.Id = tblProductSales.ProductId where tblProductSales.ProductId IS NULL In this example, we have seen how to use a subquery in the where clause. Let us now discuss about using a sub query in the SELECT clause. Write a query to retrieve the NAME and TOTALQUANTITY sold, using a subquery. Select [Name], (Select SUM(QuantitySold) from tblProductSales where ProductId = tblProducts.Id) as TotalQuantity from tblProducts order by Name Query with an equivalent join that produces the same result. Select [Name], SUM(QuantitySold) as TotalQuantity from tblProducts left join tblProductSales on tblProducts.Id = tblProductSales.ProductId group by [Name] order by Name From these examples, it should be very clear that, a subquery is simply a select statement, that returns a single value and can be nested inside a SELECT, UPDATE, INSERT, or DELETE statement. It is also possible to nest a subquery inside another subquery. According to MSDN, subqueries can be nested upto 32 levels. Subqueries are always encolsed in paranthesis and are also called as inner queries, and the query containing the subquery is called as outer query. The columns from a table that is present only inside a subquery, cannot be used in the SELECT list of the outer query. Next Video: What to choose for performance? Queries that involve a subquery or a join Text version of the video http://csharp-video-tutorials.blogspot.com/2013/01/subqueries-in-sql-part-59.html Slides http://csharp-video-tutorials.blogspot.com/2013/09/part-59-subqueries-in-sql-server.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: 203564 kudvenkat
Difference between where and having in sql server
 
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sql server where vs having sql server group by where having group by having sql server In this vide we will discuss the difference between where and having caluses in sql server. Let us understand the difference with an example. To calculate total sales by product, we would write a GROUP BY query as shown below SELECT Product, SUM(SaleAmount) AS TotalSales FROM Sales GROUP BY Product Now if we want to find only those products where the total sales amount is greater than $1000, we will use HAVING clause to filter products SELECT Product, SUM(SaleAmount) AS TotalSales FROM Sales GROUP BY Product HAVING SUM(SaleAmount) ] 1000 If we use WHERE clause instead of HAVING clause, we will get a syntax error. This is because the WHERE clause doesn’t work with aggregate functions like sum, min, max, avg, etc. SELECT Product, SUM(SaleAmount) AS TotalSales FROM Sales GROUP BY Product WHERE SUM(SaleAmount) ] 1000 So in short, the difference is WHERE clause cannot be used with aggregates where as HAVING can. However, there are other differences as well that we need to keep in mind when using WHERE and HAVING clauses. WHERE clause filters rows before aggregate calculations are performed where as HAVING clause filters rows after aggregate calculations are performed. Let us understand this with an example. Total sales of iPhone and Speakers can be calculated by using either WHERE or HAVING clause Calculate Total sales of iPhone and Speakers using WHERE clause : In this example the WHERE clause retrieves only iPhone and Speaker products and then performs the sum. SELECT Product, SUM(SaleAmount) AS TotalSales FROM Sales WHERE Product in ('iPhone', 'Speakers') GROUP BY Product Calculate Total sales of iPhone and Speakers using HAVING clause : This example retrieves all rows from Sales table, performs the sum and then removes all products except iPhone and Speakers. SELECT Product, SUM(SaleAmount) AS TotalSales FROM Sales GROUP BY Product HAVING Product in ('iPhone', 'Speakers') So from a performance standpoint, HAVING is slower than WHERE and should be avoided when possible. Another difference is WHERE comes before GROUP BY and HAVING comes after GROUP BY. Difference between WHERE and Having 1. WHERE clause cannot be used with aggregates where as HAVING can. This means WHERE clause is used for filtering individual rows where as HAVING clause is used to filter groups. 2. WHERE comes before GROUP BY. This means WHERE clause filters rows before aggregate calculations are performed. HAVING comes after GROUP BY. This means HAVING clause filters rows after aggregate calculations are performed. So from a performance standpoint, HAVING is slower than WHERE and should be avoided when possible. 3. WHERE and HAVING can be used together in a SELECT query. In this case WHERE clause is applied first to filter individual rows. The rows are then grouped and aggregate calculations are performed, and then the HAVING clause filters the groups. Text version of the video http://csharp-video-tutorials.blogspot.com/2015/09/difference-between-where-and-having-in.html Slides http://csharp-video-tutorials.blogspot.com/2015/09/difference-between-where-and-having-in_15.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 Full SQL Server Course https://www.youtube.com/playlist?list=PL4cyC4G0M1RQ_Rm52cQ4CcOJ_T_HXeMB4 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: 67628 kudvenkat
EXISTS Operator in SQL Server Tamil
 
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Click here to Subscribe to IT PORT Channel : https://www.youtube.com/channel/UCMjmoppveJ3mwspLKXYbVlg Specifies a subquery to test for the existence of rows. In this video you can check Exists and Not Exists with Simple Example Explained in Tamil
Views: 370 IT Port
oracle interview question oracle index function based index
 
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Title: Oracle Interview Question - oracle index related questions - Function based index in oracle Description: Oracle Interview Question - oracle index related questions 1. What is Index? How to create index? 2. What are the types of index? 3. How to find the list of indexes for a given table? 4. Explain B-tree index 5. Explain Bitmap index 6. Explain "Function based" index 7. Explain "Reverse Key" index 8. When to choose what type of index? 9. How to know index is being used? 10. How to monitor index usage? 11. What are the advantages/drawbacks of indexes?
Views: 148 Siva Academy
#10. Oracle PL/SQL for Beginners - Searched CASE Statement (Hindi)
 
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JavaScript Playlist: https://www.youtube.com/playlist?list=PLysly0KYnAY2tLfvp7bCL3c-psMH9Czs6 SQL Playlist: https://www.youtube.com/playlist?list=PLysly0KYnAY2q8cobbotVbn36XOskQR2F HTML5 Playlist: https://www.youtube.com/playlist?list=PLysly0KYnAY2_-PqGSrVTgBpVshxpqQlw Mobile Responsive Form using HTML5 & CSS: https://youtu.be/SECTfL3R0B0 MS SQL Server Installation: https://youtu.be/rZRA692RmuU Clock Animation in PowerPoint: https://youtu.be/LM5iwzNqQQo Envelope Animation in PowerPoint: https://youtu.be/HWlqGGleQqs FACEBOOK PAGE https://www.facebook.com/ishwaracademy/
Views: 47 Ishwar Academy
How to use the IN Operator with a Subquery
 
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In this video we’ll walk you though how to use the IN operator with a Subquery; we’ll show you why you would want to use IN with a subquery. In it’s simplest form the IN statement matches a column values to a list. TRUE is returned if there is a match. A main advantage of using subqueries with the IN operator, is the list’s contents are the subquery results. As we explain below, this provide for a lot of flexibility. Hi, and welcome to another episode of “Essential SQL Minute.” On today’s episode, we’re going to learn how to use the IN operator with a subquery. So, as you may recall, the IN operator is used to compare a column to a list of values. Now, what we’re going to do here is generate that list of values through a query. So as you can see here, I’ve put together a query. The portion that’s listed in green is the subquery, and you can see here where I have a query saying SELECT IsoAlpha3Code FROM Application.Countries where IsoAlpha3Code is like “J%.” So, essentially bring back all the IsoAlpha3Codes that start with the letter J. So, that’s going to build a list of all the IsoAlpha3Codes beginning with the letter J. I’m going to use that as basically the list for my IN operator, and then my outer query will then be run and its IsoAlpha3Code compared against the contents of the results from that subquery. This will be very similar to running a query where I had, in effect, independently run a query to get all those IsoAlpha3Codes and then manually type them into my query as “JAM”, “JOR”, and “JPN” and then run this as a separate query. So, let’s see how this works in Query Manager. So, here I have my subquery with the IN clause. Here’s the subquery. SELECT CountryID ,CountryName ,IsoAlpha3Code FROM Application.Countries WHERE IsoAlpha3Code IN (SELECT IsoAlpha3Code FROM Application.Countries WHERE IsoAlpha3Code Like 'J%') It’s gonna bring back all the IsoAlpha3Codes that begin with the letter J. My outer query here is going to run. This column IsoAlpha3Code will then have its value compared using the IN operator to the results of the subquery. So, when I run this you see that it comes back with “JAM”, “JPN”, and “JOR” as the results. Notice that the subquery is enclosed in parentheses, and that multiple values are returned. I want to mention that if I was to have put, let’s say CountryName in here in my subquery and run it that it will return an error, because in this case for the subquery, since it’s part of the IN clause it’s really expecting one value per row being returned. So, let’s see how this works. This is really similar to, again, the query if I run … sort of this query here where I would run SELECT, where I’m looking for the IsoAlpha3Code IN “JAM”, “JOR”, “JPN”. SELECT CountryID ,CountryName ,IsoAlpha3Code FROM Application.Countries WHERE IsoAlpha3Code IN ('JAM','JOR', 'JPN') So, in fact, really, to get these three values, probably could have found those three values just by running a query similar to this, right? Where I would have said SELECT IsoAlpha3Code FROM Application.Countries WHERE the IsoAlpha3Code is like “J%.” And there you see JAM, JPN, and JOR. So, those are my three values. SELECT IsoAlpha3Code FROM Application.Countries WHERE IsoAlpha3Code Like 'J%' So, if I was to take this query and use this as a subquery it can in effect pump the results, these results here into that IN list and then use as a comparison. So, if I go back to my original query … let me get another copy of it here … there we go … I’m now taking the results of that query where I’m getting JAM, JPN, and JOR from here, pumping the results into the IN list and then using that to drive the comparison for my outer query. The benefit of doing that versus just coming in here straight out typing JAM, JPN and JOR is that if we were to add a fourth country, like JYP then I no longer have to change my query because this query here is flexible in that it will capture any new countries that begin with the letter J. Where, if you were to add new countries beginning with the letter J and I was hard coding them in I would always have to come back to my query and remember to always type them in. And you would always have to remember to tell me to change my query. So, to me, a huge advantage of using subqueries in this case, is that they become more robust because they adapt to the changing data. This makes the subquery very powerful. Now, on the flip side, the danger of using the subquery is that you really do have a query inside of another query and people sometimes get a little nervous with subqueries because they can get overused as sometimes subqueries can cause performance issues. So, beware in general of not overusing subqueries and know in this specific case you’d be all right, so I feel strongly that using subqueries in the IN clauses can be a good thing and it’s definitely a powerful tool to keep your code robust.
Views: 376 Kris Wenzel
HOW TO RETURN MULTIPLE VALUES FROM A PROCEDURE IN ORACLE PL/SQL? (USING OUT PARAMETERS)
 
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This video tutorial explains how an oracle procedure can return multiple values with a proper example. The video tutorial shows how this problem can be tacked using simple and easy to understand out parameters!!!
Views: 12670 Kishan Mashru
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: 4813 Kishan Mashru
SQL 136 Subselect, EXISTS with Subselects
 
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Explains how EXISTS with subselects work. From http://ComputerBasedTrainingInc.com SQL Course. Learn by doing SQL commands for ANSI Standard SQL, Access, DB2, MySQL, Oracle, PostgreSQL, and SQL Server.
Views: 4859 cbtinc
CASE..When to conditionally add new column in SQL
 
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Sometimes there is a situation when we need to add new column conditionally with select statement. At that time a concept of case when then is very useful. In this video I have taken an example of student grade. Table contain two column student name and student grade If grade is A then I want result very good with new column Grade Status and if grade is D then I want result Fail with column Grade Status. How to achieve this task we will learn in this video.If you have any doubt you can mail me on [email protected] Don't forget to subscribe my channel.
Views: 883 Dhruvin Shah
ORACLE SQL INTERVIEW QUESTION : DIFFERENCE BETWEEN DELETE AND TRUNCATE
 
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This video tutorial is on frequently asked interview question like the difference between delete and truncate statement in oracle sql, after watching this video you will understand more on the difference between both the statements and will be able to answer this interview question with a lot of confidence. Link to know more on HVM in oracle please refer to the link : https://youtu.be/uZ9BwzZx6lI
Views: 4658 Kishan Mashru
3 Tips for Working with PLSQL in Oracle SQL Developer
 
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See very quickly how to click to object declarations, test/execute SQL, and use the code outline in Oracle SQL Developer when working with PL/SQl.
Views: 1067 Jeff Smith
Null value in oracle
 
09:08
this video describes null concept in oracle. join the group and share your knowledge and ask your doubts. https://www.facebook.com/groups/940425699338535/
17/125 Oracle PLSQL: Handling Nulls in IF Statement
 
09:23
Learn Oracle PLSQL EXAM 1Z0-144
Views: 1124 khaled alkhudari
sql insert command | sql insert into table | sql insert query | DBMS Lectures in hindi #74
 
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Welcome to series of gate lectures by well academy sql insert command | sql insert into table | sql insert query | DBMS Lectures in hindi #74 Here are some more GATE lectures by well academy relational algebra in dbms | relational algebra operations in dbms | DBMS lectures in hindi #58 : https://youtu.be/zbnyudmh4ys Select Operation in Relation Algebra | Selection in Relational Algebra | DBMS lectures in hindi #59 : https://youtu.be/NsIL7z4Ck4A Projection in Relational Algebra | relational algebra in dbms | DBMS Lectures in hindi #60 : https://youtu.be/5QVMyeDfih4 Gate 2012 Relaional Algebra | relational algebra in dbms gate | DBMS lectures in hindi #61 : https://youtu.be/SeGqtlzy5_k Rename operation in Relational Algebra | relational algebra in dbms | DBMS Lectures in hindi #62 : https://youtu.be/0bklGoIBcQ8 set operations in dbms | Set Operations in Relational Algebra in dbms | DBMS lectures in hindi #63 : https://youtu.be/cE8mZnWxyN4 Join Operation in DBMS | join operation in relational algebra | join operation in database DBMS #64 : https://youtu.be/Au-ab_Yq1rw Natural join operation in dbms | Natural join in relational algebra | Natural join in hindi | #65 : https://youtu.be/rBaSaPoUeqQ Division Operation | Division Operation in DBMS | Division Operation in dbms with example | DBMS #66 : https://youtu.be/705ljW1X5gM join in dbms | Types of Join in dbms | join operation in relational algebra | DBMS lectures #67 : https://www.youtube.com/watch?v=4DppvRx5a2Y GATE 2015 Relational Algebra | relational algebra in dbms with examples | DBMS Lectures in hindi #68 : https://youtu.be/gj0xiXmjVaw Relational Calculus | relational calculus database | relational calculus in hindi | DBMS #69 : https://youtu.be/1hG_qqckYj0 Tuple Relational Calculus | tuple relational calculus in dbms | tuple relational calculus in hindi : https://youtu.be/RzGg0fykY3I Tuple Relational Calculus | Bounded Variables and Free Variables | DBMS Lectures in Hindi #71 : https://youtu.be/Yjz10ysczUc SQL create table in hindi | SQL tutorial in hindi | DBMS Lectures in hindi #72 : https://youtu.be/Pm8XAQYDBGw constraints in dbms | constraints in sql in hindi | DBMS Lectures in Hindi #73 : https://youtu.be/kevkLGrJvUg Click here to subscribe well Academy https://www.youtube.com/wellacademy1 GATE Lectures by Well Academy Facebook Group https://www.facebook.com/groups/1392049960910003/ Thank you for watching share with your friends Follow on : Facebook page : https://www.facebook.com/wellacademy/ Instagram page : https://instagram.com/well_academy Twitter : https://twitter.com/well_academy bulk insert sql server, how to insert sql, insert column in sql, insert en sql, insert en sql server, insert image in sql server, insert image to sql server, insert into select sql, insert query in sql server, mysql insert, mysql insert data, mysql insert date, mysql insert image to database, mysql insert into, mysql insert into table, mysql insert multiple rows, mysql insert query, mysql insert statement, mysql insert update delete, php sql insert, sql bulk insert, sql insert, sql insert and delete, sql insert and update at the same time, sql insert array, sql insert based on select, sql insert case statement example, sql insert command, sql insert csv, sql insert data, sql insert data from csv file, sql insert data from one table to another, sql insert data from text file, sql insert data into joined tables, sql insert date, sql insert date and time, sql insert date now, sql insert delete update, sql insert delete update select, sql insert error, sql insert excel into table, sql insert foreign key, sql insert from multiple tables, sql insert from one table to another, sql insert image into table, sql insert injection, sql insert into, sql insert into español, sql insert into multiple rows, sql insert into multiple tables, sql insert into multiple tables in one query, sql insert into multiple tables with foreign keys, sql insert into select, sql insert into select example, sql insert into table, sql insert javascript, sql insert new column between two columns, sql insert null value, sql insert picture into table, sql insert query, sql insert record into table, sql insert script, sql insert script from excel, sql insert serial number, sql insert statement, sql insert table, sql insert table into another table, sql insert trigger, sql insert trigger example, sql insert two tables foreign key, sql insert update delete, sql insert update delete trigger, sql insert update example, sql insert using excel, sql insert values into table, sql insert values multiple rows oracle, sql insert values where not exists, sql insert view, sql stored procedure insert, trigger insert sql server
Views: 4217 Well Academy
Learn Oracle | How to use Outer Joins Left, Right, Full in SQL
 
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Pebbles present, Learn Oracle 10g with Step By Step Video Tutorials. Learn Oracle 10g Tutorial series contains the following videos : Learn Oracle - History of Oracle Learn Oracle - What is Oracle - Why do we need Oracle Learn Oracle - What is a Database Learn Oracle - What is Grid Computing Learn Oracle - What is Normalization Learn Oracle - What is ORDBMS Learn Oracle - What is RDBMS Learn Oracle - Alias Names, Concatenation, Distinct Keyword Learn Oracle - Controlling and Managing User Access (Data Control Language) Learn Oracle - Introduction to SQL Learn Oracle - Oracle 10g New Data Types Learn Oracle - How to Alter a Table using SQL Learn Oracle - How to Create a Package in PL SQL Learn Oracle - How to Create a Report in SQL Plus Learn Oracle - How to Create a Table using SQL - Not Null, Unique Key, Primary Key Learn Oracle - How to Create a Table using SQL Learn Oracle - How to Create a Trigger in PL SQL Learn Oracle - How to Delete Data from a Table using SQL Learn Oracle - How to Drop and Truncate a Table using SQL Learn Oracle - How to Insert Data in a Table using SQL Learn Oracle - How to open ISQL Plus for the first time Learn Oracle - How to Open SQL Plus for the First Time Learn Oracle - How to Update a Table using SQL Learn Oracle - How to use Aggregate Functions in SQL Learn Oracle - How to use Functions in PL SQL Learn Oracle - How to use Group By, Having Clause in SQL Learn Oracle - How to Use Joins, Cross Join, Cartesian Product in SQL Learn Oracle - How to use Outer Joins (Left, Right, Full) in SQL Learn Oracle - How to use the Character Functions, Date Functions in SQL Learn Oracle - How to use the Merge Statement in SQL Learn Oracle - How to use the ORDER BY Clause with the Select Statement Learn Oracle - How to use the SELECT Statement Learn Oracle - How to use the Transactional Control Statements in SQL Learn Oracle - How to use PL SQL Learn Oracle - Data Types in PL SQL Learn Oracle - Exception Handling in PL SQL Learn Oracle - PL SQL Conditional Logics Learn Oracle - PL SQL Cursor Types - Explicit Cursor, Implicit Cursor Learn Oracle - PL SQL Loops Learn Oracle - Procedure Creation in PL SQL Learn Oracle - Select Statement with WHERE Cause Learn Oracle - SQL Operators and their Precedence Learn Oracle - Using Case Function, Decode Function in SQL Learn Oracle - Using Logical Operators in the WHERE Clause of the Select Statement Learn Oracle - Using Rollup Function, Cube Function Learn Oracle - Using Set Operators in SQL Learn Oracle - What are the Different SQL Data Types Learn Oracle - What are the different types of Databases Visit Pebbles Official Website - http://www.pebbles.in Subscribe to our Channel – https://www.youtube.com/channel/UCNNjWVsQqaMYccY044vtHJw?sub_confirmation=1 Engage with us on Facebook at https://www.facebook.com/PebblesChennai Please Like, Share, Comment & Subscribe
Views: 282 Pebbles Tutorials
Let's Learn SQL! Lesson 98: The Combined and Horizontal Case Statement
 
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Explore SQL with Tom Coffing of Coffing Data Warehousing! In this lesson, learn some Advanced Case Statements such as the Combined Case Statement and the Horizontal Case Statement!
How to recover a dropped table in oracle?
 
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This is a free tutorial video on how to use the FLASHBACK TABLE query to restore a dropped table in oracle, and we have given some useful information on PURGE, RECYCLEBIN and shown some demo on how to restore a dropped table in oracle.
Views: 2100 Kishan Mashru
SQL for Beginners (Part 3) : The WHERE Clause
 
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The third part of a mini-series of videos showing the basics of SQL. In this episode, we take a look at the type of things you are likely to see in the WHERE clause of queries. For more information see: https://oracle-base.com/articles/misc/sql-for-beginners-the-where-clause Website: https://oracle-base.com Blog: https://oracle-base.com/blog Twitter: https://twitter.com/oraclebase Cameo by Rita Nunez : Blog: http://dbaoraclesoporte.blogspot.com Twitter: https://twitter.com/ritan2000 Cameo appearances are for fun, not an endorsement of the content of this video.
Views: 1089 ORACLE-BASE.com
Oracle Database Tutorial 5: The ''Where'' Clause In Sql
 
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The WHERE clause is used to filter records. The WHERE clause is used to extract only those records that fulfill a specified condition. sql where clause multiple sql where like sql where not equal sql order by sql statement order sql update not in operator in sql sql where in list 1 2 3 4 5 6 7 8 9 10 Next
Oracle SQL Tutorial 16 - Parent Child Relationships
 
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So far in this series we have discussed database design, creating tables, and constraints. We've brought up the concept of foreign keys, but we have not explained how to create them. That is the goal of this video and the upcoming videos. We want to study those foreign keys! Let's make them not so foreign. Let's learn the proper way to define a foreign key. As a reminder, a foreign key is a column that references a column of another table. The column it references must either be a primary key, or have the UNIQUE constraint. This means that every value inside of the column that is labeled as a foreign key, there must be that value in some row of the referenced column. As an example, imagine that we have the users table, and we have a table service_requests. We could have a column in the service_request that references a column in the users table. Usually this would be the primary key that is referenced, but there is nothing stopping you from referencing a unique column. Just for fun, let's go through an example using the username column. If we have a service_requests table, every single row within the table is going to be what some would consider an instance of a service_request. This means that the table columns are like the blueprint for what a service request looks like and then each row is an individual service request. If we have one of the columns labeled as a foreign key to the username of the users table, what does that mean practically? It means that for a single row, the value for that column must be a value that exists in the users table. We could have a service_request submitted by a user with the username of Yoloswagman. This means that there must be a row inside of the users table that has the value Yoloswagman for the username column. This brings up the concept of parent and child relationships. Yoloswagman in this situation is the parent, and his service request is the child. When we draw it out, it makes sense why a primary key must be UNIQUE. If we had two Yoloswagmans, the child would not know which column is the parent. The same applies if we were using IDs and we had So remember, always reference a primary key or a column with the UNIQUE constraint. Now, I have a question for you. Do foreign keys automatically have the UNIQUE constraint, just like primary keys? The answer is no. A parent row can have many child rows. It makes sense because the user could submit multiple service requests. Can we force the column to be unique? Absolutely. If that was the case, the user could only make one service request. Another question. Do foreign keys automatically have the NOT NULL constraint, just like primary keys? The answer is no. Essentially what this means is that a child could be created with no parent. Can we force the column to be NOT NULL? Absolutely. It is ok in some situations to allow the row to be null, but in this situation it makes no sense. It would be wise for us to add that constraint ourselves. So now that you understand some more differences between primary and foreign keys and parent child relationships, take all of these questions into consideration when you are creating foreign keys. In the next video, we are going to start a small project that is going to require multiple tables. We'll take a video to design our structure and then we'll get to creating those foreign keys in Oracle SQL Developer. Stick around and if you like these videos please be a serious supporter and subscribe to my channel. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 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: 12187 Caleb Curry
APRENDA VIRTUAL - Curso de PL/SQL - Teoria e Prática
 
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Site: www.aprendavirtual.com - Seu site de cursos EAD O Aprenda Virtual é um centro de estudos com a intenção de ministrar aulas da área de computação/exatas, com custos acessíveis. Todos os cursos são individuais com apostilas, provas e vídeos. Você aprenderá passo a passo através dos vídeos postados e poderá trabalhar em sua casa ou trabalho no momento que desejar, agora corra e inscreva-se!!!. site: www.aprendavirtual.com. Curso EAD de PL/SQL - Conteúdo Programático * Instalação - Oracle XE e SQLDeveloper * Diferença de comandos DML, DDL, DCL * Privilégios de DBA ( GRANT e REVOKE) * Comandos DCL e suas variações * Create Table * Definição de Constraints - Primary Key - Foreign Key - Unique Key - Check Constraits - Alter Table - Drop Table * Comandos DML e suas variações - Insert - Update - Delete - Select (Distinct) * Comando de Junção de Tabelas - Join - Left - Right - Full - Union - Minus - Intersect * Manipulação de String - Substr - Upper - Lower - Like - Extract * Uso do Case * Comandos de Agregação - Sum - Count - Avg - Max - Min * Grupando resultados - Group - Having * Criando Subconsultas - IN , NOT IN - EXISTS, NOT EXISTS * Consultas Hierarquizadas - CONNECT BY * Criação de View´s * Definição de bloco anônimo * Estrutura Condicional - IF THEN ELSE * Tipos de Dados * Saída de resultados - Uso do DBMS_OUTPUT *Estrutura de Repetição - LOOP - FOR - WHILE * Uso de Cursores Implícitos - SQL%FOUND - SQL%NOTFOUND - SQL%ROWCOUNT *Uso de Cursores Explícitos - OPEN , FETCH E CLOSE - FOR - FOR UPDATE * Tratamento de Exceções - EXCEPTION - RAISE_APPLICATION_ERROR * Subprogramas (construção) - PROCEDURES - FUNÇÕES - PACKAGE * Trigger (Gatilho) - BEFORE E AFTER - DML (INSERT, UPDATE, DELETE) * Criação de Pacotes O site para o curso é: http://www.aprendavirtual.com/
Views: 39478 Grimaldo Oliveira
Using Subqueries in Oracle Database
 
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Oracle Subquery
Views: 19 Adam Tech
04 Oracle 11g  Основы SQL  - Использование функций преобразования и условных выражений
 
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Модуль 04. Использование функций преобразования и условных выражений • Неявное и явное преобразование типов данных • Использование функций преобразования TO_CHAR, TO_NUMBER и TO_DATE • Вложенные однострочные функции • Применение функций NVL, NULLIF и COALESCE к датам • Использование логических условий IF THEN ELSE в команде SELECT
Views: 502 Tech Net
Mysql table name with space in mysql
 
01:10
Demo of Table :- CREATE TABLE IF NOT EXISTS `TABLE 8` ( `title` varchar(56) DEFAULT NULL, `platform` varchar(16) DEFAULT NULL, `score` decimal(2,1) DEFAULT NULL, `genre` varchar(17) DEFAULT NULL, `editors_choice` varchar(1) DEFAULT NULL ) ENGINE=InnoDB DEFAULT CHARSET=utf8; -- -- Dumping data for table `TABLE 8` -- INSERT INTO `TABLE 8` (`title`, `platform`, `score`, `genre`, `editors_choice`) VALUES ('LittleBigPlanet PS Vita', 'PlayStation Vita', 9.0, 'Platformer', 'Y'), ('LittleBigPlanet PS Vita -- Marvel Super Hero Edition', 'PlayStation Vita', 9.0, 'Platformer', 'Y'), ('Splice: Tree of Life', 'iPad', 8.5, 'Puzzle', 'N'), ('NHL 13', 'Xbox 360', 8.5, 'Sports', 'N'), ('NHL 13', 'PlayStation 3', 8.5, 'Sports', 'N'), ('Total War Battles: Shogun', 'Macintosh', 7.0, 'Strategy', 'N'), ('Double Dragon: Neon', 'Xbox 360', 3.0, 'Fighting', 'N'), ('Guild Wars 2', 'PC', 9.0, 'RPG', 'Y'); select Query :- select * from `TABLE 8`; -~-~~-~~~-~~-~- Please watch: "create data dictionary using code" https://www.youtube.com/watch?v=oUtfsjBFz_k -~-~~-~~~-~~-~-
Views: 67 kumawat ajay

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