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SQL-Where/Having Clauses 

Pooja Goel  |   Nov 7, 2019  |  Views: 19

Description:

Where Clause :

 

WHERE clause is used to fetch records based on certain condition.

 

Syntax:

SELECT * FROM TABLE_NAME WHERE condition

Example: 

There is created “Employee” Table. 

 

 

The following query will fetch records from “Employee” Table whose salary greater than equal to 20000.

 

SELECT  * FROM Employee WHERE Salary >= 20000

 Output :

 

 

Note : This clause is used in all DML statements(SELECT,INSERT,DELETE,UPDATE)

 




Having Clause :

 

Having clause is used to fetch records based on certain condition with Group by clause.

 

Having clause  can not be use without Group by Clause.

 

Syntax:

 SELECT column1,column2 FROM TABLE_NAME
WHERE condition Group by column1
Having condition

 

The following query will fetch records from “Employee” Table whose sum of salary greater than equal to 10000.

SELECT ID, Sum(SALARY)
FROM employee
GROUP BY ID
HAVING Sum(SALARY)>10000

Output : 

 


Comments:
Content Contributor
Pooja Goel

Pooja Goel

Sr. Software developer at Damco Solutions Pvt. Ltd.  |   Noida, Uttar Pradesh, India

I am a sr. software developer working on technologies like SQL, SSIS, SSRS, DB2,Tableau, ASP.NET having 7 years of experience.


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