Learn how to create SQL Joins. The first 10 minutes teach you the basics. Inner Join, Left Outer Join, Right Outer Join, and Full Outer Join. The second 10 minutes show you are few techniques that will help you as you start building joins.
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Views: 152633
Joey Blue
This screencast introduces table joins, including differences between SQL 89 and SQL 92 join syntax. The various join types such as natural (inner) joins and left/right/full outer joins, and cross joins.
Views: 147490
Michael Fudge
For more such videos visit http://www.questpond.com
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In this video we will try to understand four important concepts Inner joins,Left join,Right join and full outer joins.
We are also distributing a 100 page Ebook ".Sql Server Interview Question and Answers". If you want this ebook please share this video in your facebook/twitter/linkedin account and email us on [email protected] with the shared link and we will email you the PDF.
Views: 862598
Questpond
Oracle SQL Join Tutorials. Different types of joins and examples.
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Views: 102491
Oresoft LWC
Ejemplo simple sobre la selección de datos desde más de una tabla, haciendo combinaciones tanto internas como externas (INNER, OUTER JOIN). Adicionalmente, comparar la notación SQL ANSI con la notación ORACLE
Views: 136092
EscuelaITbbdd
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From the newly released 2 Disc DVD set (SQL Queries Joes 2 Pros Vol2) this video shows how to join 3 tables in 1 query.
Views: 255353
Joes2Pros SQL Trainings
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thenewboston
In this tutorial we'll take a look at SQL JOINS and see how we can pull data from two tables through a single query!
Views: 100964
The Bad Tutorials
Pebbles present, Learn Oracle 10g with Step By Step Video Tutorials.
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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
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Learn Oracle - PL SQL Cursor Types - Explicit Cursor, Implicit Cursor
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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
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Views: 3845
Pebbles Tutorials
Jamie King of Neumont University demonstrating how to join several tables together.
Views: 138108
Jamie King
CAPTIONS AVAILABLE - Full transcript (with some screenshots) available for a small fee at http://stores.lulu.com/konagora/. A very brief description of how a database performs a join, based on material from a 2-day seminar.
Views: 76953
roughsealtd
In this video we will learn about
1. The different types of Joins in sql server
2. Cross Join
3. Inner Join
4. Outer Join -- Left , Right and Full Outer Join.
Text version of the video
http://csharp-video-tutorials.blogspot.com/2012/08/joins-in-sql-server-part-12.html
Slides
http://csharp-video-tutorials.blogspot.com/2013/08/part-12-joins.html
All SQL Server Text Articles
http://csharp-video-tutorials.blogspot.com/p/free-sql-server-video-tutorials-for.html
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Views: 593137
kudvenkat
This is a video tutorial on how to retrieve data from multiple tables using simple join or inner join, the video demonstrates on how to write a simple join or inner join. It also explains the different syntax available to write an inner join, like with the JOIN and USING clause or by JOIN and ON clause. The video also demonstrates the use of alias and importance of it when using the simple join syntax.
Views: 852
Kishan Mashru
Connect with me on my LinkedIn and please endorse my Oracle database Skills
LinkedIn : http://bit.ly/LinkedIn-Manish
Links
Web Link : http://bit.ly/natural-join
Website : http://www.rebellionrider.com
In This Tutorial You will learn
What is Natural Join? How to use natural join.
Natural Join with ON clause and Natural Join with Using clause
Natural Joins with the USING Clause
• If several columns have the same names but the data
types do not match, natural join can be applied by using
the USING clause to specify the columns that should be
used for an equijoin.
• Use the USING clause to match only one column when
more than one column matches.
• Do not use a table name or alias in the referenced
columns.
• The NATURAL JOIN and USING clauses are mutually
exclusive.
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.
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Thanks for liking, commenting, sharing and watching more of our videos
This is Manish from RebellionRider.com
Views: 71925
Manish Sharma
Hola queridos suscriptores, tenemos un nuevo video mostrando los tipos de joins como: Inner Join, Right Join, Left Join y Full Join. ¿Como utilizar join en select? Une tus consultas SELECT con los diferentes Joins que te ofrece sql, de acuerdo al gestor de base de datos.
*Esperamos que te sea útil, ya que nuestro objetivo es compartir conocimientos ;)
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Views: 21603
Somos Sistemas Oficial
How to build queries with your mouse versus the keyboard.
2018 Update: If you'd like to see how to convert your Oracle style JOINS to ANSI style (in the FROM vs the WHERE clause) see this post
https://www.thatjeffsmith.com/archive/2018/10/query-builder-on-inline-views-and-ansi-joins/
Views: 73715
Jeff Smith
This is a demo intro video about Oracle and Joins in oracle to understand how we teach our students.
Views: 3336
Sudaksha Education Enterprise
Introduction to Nested Select Statements in SQL with a focus on contrasting the nested select technique to that of the natural join covered previously
Views: 8299
Brian Finnegan
http://www.hotosting.com/cresite/ . Tutoriel français SQL : Jointure join multiples avec 2 tables et SELECT. Trois exemples de requêtes SQL avec 2 tables jointes à connaître pour interroger deux tables d'une base de données RELATIONNELLES en même temps à l'aide de SELECT et sa JOINTURE entre 2 tables. https://www.youtube.com/user/yansay88
Views: 28310
Yannick Sayer
This video demonstrates how to join or reference 2 or more tables in different databases but on same server machine.
How to Join Tables
How to Join Tables in SQL Server
How to Join Tables in Different Databases
Join Tables in SQL Select
Views: 8373
hbksoft
Hi! I’m Abdulrhman Uthman, a student of King Faisal University in Saudi Arabia. This series is intended for the practical class of Database Concepts students in our university, but anyone who wants to learn database, SQL or Structured Query Language and use Oracle’s APEX are welcome aboard.
In this video we will continue discussing the SELECT statement with JOIN.
I would like to acknowledge the following people for their support:
Dr. Majed Alshamari,
Dr. Mohammed Bonais,
Dr. Abdullah Alaulaimie,
Dr. Mohammed Al-Naeem,
Mr. Ahmed Alshawayrid,
Mr. Naif Bo-Hasan,
Mr. Mohammed Tawfiq,
my sister, Ms. Reem Uthman, and
my brother, Anas Uthman for editing the video.
Views: 1153
Abdulrhman Uthman
Hi! I’m Abdulrhman Uthman, a student of King Faisal University in Saudi Arabia. This series is intended
for the practical class of Database Concepts students in our university, but anyone who wants to learn
database, SQL or Structured Query Language and use Oracle’s APEX are welcome aboard.
In this video, we will try to JOIN 3, 4, and even 5 tables
I would like to acknowledge the following people for their support:
Dr. Majed Alshamari,
Dr. Mohammed Bonais,
Dr. Abdullah Alaulaimie,
Dr. Mohammed Al-Naeem,
Mr. Ahmed Alshawayrid,
Mr. Naif Bo-Hasan,
Mr. Mohammed Tawfiq,
my sister, Ms. Reem Uthman, and
my brother, Anas Uthman for editing the video.
Views: 2277
Abdulrhman Uthman
Hi! I’m Abdulrhman Uthman, a student of King Faisal University in Saudi Arabia. This series is intended for the practical class of Database Concepts students in our university, but anyone who wants to learn database, SQL or Structured Query Language and use Oracle’s APEX are welcome aboard.
In this video we will continue JOINing tables.
I would like to acknowledge the following people for their support:
Dr. Majed Alshamari,
Dr. Mohammed Bonais,
Dr. Abdullah Alaulaimie,
Dr. Mohammed Al-Naeem,
Mr. Ahmed Alshawayrid,
Mr. Naif Bo-Hasan,
Mr. Mohammed Tawfiq,
my sister, Ms. Reem Uthman, and
my brother, Anas Uthman for editing the video.
Views: 1195
Abdulrhman Uthman
Hi! I’m Abdulrhman Uthman, a student of King Faisal University in Saudi Arabia. This series is intended for the practical class of Database Concepts students in our university, but anyone who wants to learn database, SQL or Structured Query Language and use Oracle’s APEX are welcome aboard.
In this video we will continue discussing the INNER, LEFT and RIGHT joins.
I would like to acknowledge the following people for their support:
Dr. Majed Alshamari,
Dr. Mohammed Bonais,
Dr. Abdullah Alaulaimie,
Dr. Mohammed Al-Naeem,
Mr. Ahmed Alshawayrid,
Mr. Naif Bo-Hasan,
Mr. Mohammed Tawfiq,
my sister, Ms. Reem Uthman, and
my brother, Anas Uthman for editing the video.
Views: 1242
Abdulrhman Uthman
cross apply sql server example
sql server outer apply example
sql server join table function with parameter
sql server inner join table valued function
In this video we will discuss cross apply and outer apply in sql server with examples.
We want to retrieve all the matching rows between Department and Employee tables.
This can be very easily achieved using an Inner Join as shown below.
Select D.DepartmentName, E.Name, E.Gender, E.Salary
from Department D
Inner Join Employee E
On D.Id = E.DepartmentId
Now if we want to retrieve all the matching rows between Department and Employee tables + the non-matching rows from the LEFT table (Department)
This can be very easily achieved using a Left Join as shown below.
Select D.DepartmentName, E.Name, E.Gender, E.Salary
from Department D
Left Join Employee E
On D.Id = E.DepartmentId
Now let's assume we do not have access to the Employee table. Instead we have access to the following Table Valued function, that returns all employees belonging to a department by Department Id.
Create function fn_GetEmployeesByDepartmentId(@DepartmentId int)
Returns Table
as
Return
(
Select Id, Name, Gender, Salary, DepartmentId
from Employee where DepartmentId = @DepartmentId
)
Go
The following query returns the employees of the department with Id =1.
Select * from fn_GetEmployeesByDepartmentId(1)
Now if you try to perform an Inner or Left join between Department table and fn_GetEmployeesByDepartmentId() function you will get an error.
Select D.DepartmentName, E.Name, E.Gender, E.Salary
from Department D
Inner Join fn_GetEmployeesByDepartmentId(D.Id) E
On D.Id = E.DepartmentId
If you execute the above query you will get the following error
Msg 4104, Level 16, State 1, Line 3
The multi-part identifier "D.Id" could not be bound.
This is where we use Cross Apply and Outer Apply operators. Cross Apply is semantically equivalent to Inner Join and Outer Apply is semantically equivalent to Left Outer Join.
Just like Inner Join, Cross Apply retrieves only the matching rows from the Department table and fn_GetEmployeesByDepartmentId() table valued function.
Select D.DepartmentName, E.Name, E.Gender, E.Salary
from Department D
Cross Apply fn_GetEmployeesByDepartmentId(D.Id) E
Just like Left Outer Join, Outer Apply retrieves all matching rows from the Department table and fn_GetEmployeesByDepartmentId() table valued function + non-matching rows from the left table (Department)
Select D.DepartmentName, E.Name, E.Gender, E.Salary
from Department D
Outer Apply fn_GetEmployeesByDepartmentId(D.Id) E
How does Cross Apply and Outer Apply work
The APPLY operator introduced in SQL Server 2005, is used to join a table to a table-valued function.
The Table Valued Function on the right hand side of the APPLY operator gets called for each row from the left (also called outer table) table.
Cross Apply returns only matching rows (semantically equivalent to Inner Join)
Outer Apply returns matching + non-matching rows (semantically equivalent to Left Outer Join). The unmatched columns of the table valued function will be set to NULL.
Text version of the video
http://csharp-video-tutorials.blogspot.com/2015/09/cross-apply-and-outer-apply-in-sql.html
Slides
http://csharp-video-tutorials.blogspot.com/2015/09/cross-apply-and-outer-apply-in-sql_8.html
All SQL Server Text Articles
http://csharp-video-tutorials.blogspot.com/p/free-sql-server-video-tutorials-for.html
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http://csharp-video-tutorials.blogspot.com/p/sql-server.html
All Dot Net and SQL Server Tutorials in English
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Views: 76107
kudvenkat
Learn to summarize yoru data using the SQL Aggregates such as count and sum and the GROUP BY and HAVING clauses of the SELECT statement
Views: 151142
Michael Fudge
SQL Tutorial on Advanced Subqueries returning multiple columns
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Views: 60518
Telusko
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: 207550
kudvenkat
Hi! I’m Abdulrhman Uthman, a student of King Faisal University in Saudi Arabia. This series is intended for the practical class of Database Concepts students in our university, but anyone who wants to learn database, SQL or Structured Query Language and use Oracle’s APEX are welcome aboard.
In this video, we will use SELFJOIN and. JOIN 3 tables.
I would like to acknowledge the following people for their support:
Dr. Majed Alshamari,
Dr. Mohammed Bonais,
Dr. Abdullah Alaulaimie,
Dr. Mohammed Al-Naeem,
Mr. Ahmed Alshawayrid,
Mr. Naif Bo-Hasan,
Mr. Mohammed Tawfiq,
my sister, Ms. Reem Uthman, and
my brother, Anas Uthman for editing the video.
Views: 2480
Abdulrhman Uthman
Oracle 11g SQL tutorial (Exam 1Z0-051) for beginner / intermediate learners. We are a supplier of IT services to UK's leading Telecom and Financial organizations. This tutorial is presented by our LEAD ORACLE DBA with over 9 yrs of hands-on experience managing Oracle projects for companies such as Oracle Corp, AXA Insurance, Telefonica O2 etc.
*** Subscribe for notification on full course availability ***
Prev Video ( Introduction ) - http://www.youtube.com/watch?v=Ve4t_PuMaLc
SELECT STATEMENT
Covers the basic SELECT statement.
Views: 92083
Sahaey Edu
http://www.hotosting.com/cresite/ . Tutoriel français SQL : Jointure de 3 tables (join multiples tables). Deux exemples de requêtes SQL à connaître avec 3 tables jointes pour interroger trois tables d'une base de données RELATIONNELLES en même temps à l'aide de SELECT et sa JOINTURE entre 3 tables. https://www.youtube.com/user/yansay88
Views: 20981
Yannick Sayer
From SQL Queries Joes 2 Pros (Vol2) ch4.1. Learn up to write aggregated queries.
Views: 173295
Joes2Pros SQL Trainings
In this video we will learn about
1. Self Join - Joining a table with itself
2. Self Join is not a different type of join. It can be classified as Inner Self Join, Outer Self Join (Left, Right and Full), or Cross Self Join.
Text version of the video
http://csharp-video-tutorials.blogspot.com/2012/08/self-join-in-sql-server-part-14.html
Slides
http://csharp-video-tutorials.blogspot.com/2013/08/part-14-self-join.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: 348375
kudvenkat
Giraffe Academy is rebranding! I've decided to re-focus the brand of this channel to highlight myself as a developer and teacher! The newly minted Mike Dane channel will have all the same content, with more to come in the future!
Source Code - http://www.mikedane.com/databases/sql.
This video is one in a series of videos where we'll be looking at database management basics and SQL using the MySQL RDBMS. The course is designed for beginners to SQL and database management systems, and will introduce common database management topics.
Throughout the course we'll be looking at various topics including schema design, basic C.R.U.D operations, aggregation, nested queries, joins, keys and much more.
If you’re enjoying Giraffe Academy and want to invest in our future, consider leaving a contribution
http://www.mikedane.com/contribute
Links:
Website - http://www.mikedane.com/
Facebook - https://www.facebook.com/giraffeacademy/
Twitter - https://twitter.com/GiraffeAcademy
Views: 6584
Mike Dane
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Naresh i Technologies
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Professor Drausio Henrique Chiarotti
PD - SELECT com LEFT JOIN no SQL Server 2012 ( como utilizar LEFT JOIN no SELECT )
Aula: ensina a utilizar o LEFT JOIN no SQL Server 2012. A aula utiliza três tabelas, tblPessoa, tblPessoaTelefone e tblPessoaEndereco.
Assista também:
Criar Base de Dados (Create Database) no Microsoft SQL Server: http://youtu.be/ETtBf2AumUw
Criar Tabela (Create Table) com Script SQL no Microsoft SQL Server: http://youtu.be/kKFJkFxG8vA
Criar Tabela Utilizando Diagrama (Designer) no SQL Server: http://youtu.be/PmdKMDaQRhA
1ª Temporada: http://www.youtube.com/watch?v=eFydylVZ0cw&feature=c4-overview-vl&list=PLwFf8gSUEopzWGncRvk87h3uA4KWNH7jV
Facebook: http://www.facebook.com/ProfessorDrausio
Envie sugestões para a temporada: [email protected]
Views: 11150
professordrausio
Oracle SQL Developer Tutorial For Beginners Series.
This course introduces Oracle SQL Development for its subscribers. Currently this is based on Oracle 12c. The test environment is in Windows 10.
Views: 1602
Sam Dhanasekaran
This video will show you how to retrieve data from more than one table using INNER JOIN and LEFT OUTER JOIN in Oracle SQL,
Views: 2891
Gaivota OracleSQL Lessons
Link for all dot net and sql server video tutorial playlists
http://www.youtube.com/user/kudvenkat/playlists
Link for slides, code samples and text version of the video
http://csharp-video-tutorials.blogspot.com/2014/05/part-1-how-to-find-nth-highest-salary_17.html
This is a very common SQL Server Interview Question. There are several ways of finding the nth highest salary.
By the end of this video, we will be able to answer all the following questions as well.
How to find nth highest salary in SQL Server using a Sub-Query
How to find nth highest salary in SQL Server using a CTE
How to find the 2nd, 3rd or 15th highest salary
Let's use the following Employees table for this demo
Use the following script to create Employees table
Create table Employees
(
ID int primary key identity,
FirstName nvarchar(50),
LastName nvarchar(50),
Gender nvarchar(50),
Salary int
)
GO
Insert into Employees values ('Ben', 'Hoskins', 'Male', 70000)
Insert into Employees values ('Mark', 'Hastings', 'Male', 60000)
Insert into Employees values ('Steve', 'Pound', 'Male', 45000)
Insert into Employees values ('Ben', 'Hoskins', 'Male', 70000)
Insert into Employees values ('Philip', 'Hastings', 'Male', 45000)
Insert into Employees values ('Mary', 'Lambeth', 'Female', 30000)
Insert into Employees values ('Valarie', 'Vikings', 'Female', 35000)
Insert into Employees values ('John', 'Stanmore', 'Male', 80000)
GO
To find the highest salary it is straight forward. We can simply use the Max() function as shown below.
Select Max(Salary) from Employees
To get the second highest salary use a sub query along with Max() function as shown below.
Select Max(Salary) from Employees where Salary [ (Select Max(Salary) from Employees)
To find nth highest salary using Sub-Query
SELECT TOP 1 SALARY
FROM (
SELECT DISTINCT TOP N SALARY
FROM EMPLOYEES
ORDER BY SALARY DESC
) RESULT
ORDER BY SALARY
To find nth highest salary using CTE
WITH RESULT AS
(
SELECT SALARY,
DENSE_RANK() OVER (ORDER BY SALARY DESC) AS DENSERANK
FROM EMPLOYEES
)
SELECT TOP 1 SALARY
FROM RESULT
WHERE DENSERANK = N
To find 2nd highest salary we can use any of the above queries. Simple replace N with 2.
Similarly, to find 3rd highest salary, simple replace N with 3.
Please Note: On many of the websites, you may have seen that, the following query can be used to get the nth highest salary. The below query will only work if there are no duplicates.
WITH RESULT AS
(
SELECT SALARY,
ROW_NUMBER() OVER (ORDER BY SALARY DESC) AS ROWNUMBER
FROM EMPLOYEES
)
SELECT SALARY
FROM RESULT
WHERE ROWNUMBER = 3
Views: 915798
kudvenkat
Take the Complete Course at: www.jobreadyprogrammer.com
In this lesson, you'll be introduced to the basics of the SELECT clause
Views: 7295
Imtiaz Ahmad
in this video i will show you how to use select statement and sql plus commands and many more, join our group for more detail https://www.facebook.com/groups/242999206136244/,
The Four main categories of SQL statements are as follows:
1. DML (Data Manipulation Language)
2. DDL (Data Definition Language)
3. DCL (Data Control Language)
4. TCL (Transaction Control Language)
--------------------------------------------------------------------------
DML statements include the following:
SELECT – select records from a table
INSERT – insert new records
UPDATE – update/Modify existing records
DELETE – delete existing records
--------------------------------------------------------------------------
DDL statements are used to alter/modify a database or table structure and schema. These statements handle the design and storage of database objects.
CREATE – create a new Table, database, schema
ALTER – alter existing table, column description
DROP – delete existing objects from database
--------------------------------------------------------------------------
DCL statements control the level of access that users have on database objects.
GRANT – allows users to read/write on certain database objects
REVOKE – keeps users from read/write permission on database objects.
--------------------------------------------------------------------------
TCL statements allow you to control and manage transactions to maintain the integrity of data within SQL statements.
BEGIN Transaction – opens a transaction
COMMIT Transaction – commits a transaction
ROLLBACK Transaction – ROLLBACK a transaction in case of any error.
-------------
.---------------------------------------------------------------------------------------------------------.
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tips and trics
link► https://www.youtube.com/playlist?list=PLOfLYVXrwqXrI5jvwUEi6N13QR4xCj2k2
command prompt commands:
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oracle sql:
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c programming:
link►https://www.youtube.com/playlist?list=PLOfLYVXrwqXrZ_Ub8EXeLY7YP1YxhoJzf
.-----------------------------------------------------------------------------------------------------------.
watch more videos:
learn oracle sql online overview tutorail :
https://www.youtube.com/watch?v=Dfesgj4w8QA&t=8s
how to fix or repair a corrupted usb flash drive or cd card using command prompt:
https://www.youtube.com/edit?video_id...
how to copy a folder using cmd:
https://www.youtube.com/watch?v=Lblhb...
how to move a folder using cmd:
https://www.youtube.com/watch?v=YFfHZ...
how to dell files in cmd:
https://www.youtube.com/watch?v=3-lqg...
how to make and remove directory:
https://www.youtube.com/edit?video_id...
how to change color and title in cmd:
https://www.youtube.com/edit?video_id...
how to change directory in command prompt:
https://www.youtube.com/watch?v=SmLYx...
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Views: 163
The Learning Tree
6 common SQL Query Questions
Views: 759309
The Coding Interview
Text Article
http://csharp-video-tutorials.blogspot.com/2017/01/sql-query-to-select-all-names-that.html
Slides
http://csharp-video-tutorials.blogspot.com/2017/01/sql-query-to-select-all-names-that_31.html
SQL Server Interview Questions and Answers text articles & slides
http://csharp-video-tutorials.blogspot.com/2014/05/sql-server-interview-questions-and.html
SQL Server Interview Questions and Answers playlist
https://www.youtube.com/playlist?list=PL6n9fhu94yhXcztdLO7i6mdyaegC8CJwR
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
In this video we will discuss writing a SQL query to retrieve all student names that start with letter 'M' without using the LIKE operator.
If the interviewer has not mentioned not to use LIKE operator, we would have written the query using the LIKE operator as shown below.
SELECT * FROM Students WHERE Name LIKE 'M%'
We can use any one of the following 3 SQL Server functions, to achieve exactly the same thing.
CHARINDEX
LEFT
SUBSTRING
The following 3 queries retrieve all student rows whose Name starts with letter 'M'. Notice none of the queries are using the LIKE operator.
SELECT * FROM Students WHERE CHARINDEX('M',Name) = 1
SELECT * FROM Students WHERE LEFT(Name, 1) = 'M'
SELECT * FROM Students WHERE SUBSTRING(Name, 1, 1) = 'M'
Views: 60056
kudvenkat
Join Discussion: http://www.techtud.com/video-lecture/exist-function-sql
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Techtud