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home / developersection / forums / how to add(merge) three or four table in a single sql query ?
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2 Answers

Nitin Lahoti
Nitin Lahoti 11 Dec 2018
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I would like to suggest join concept to add multiple tabe in a single query as per above post mr.SANAT  plz use this one.

Anonymous User
Anonymous User 27 Nov 2018
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Hi, Rahul

Please, use this query ...

1). If you want to Merge Two Tables...

SELECT * FROM 

Table_1

FULL OUTER JOIN

Table_2 ON Table_1.colomn_name = Table_2.column_name

2). And if you want to add three or four table by a single query...

SELECT * FROM 

Table_1
FULL OUTER JOIN

Table_2 ON Table_1.EmployeeName = Table_2.EmployeeName

FULL OUTER JOIN 

Table_3 ON Table_2.EmployeeName = Table_3.EmployeeName

Note - Foreign keys must be used in all the tables in which the tables that we call them to join. This means that all those tables should have a common column name.

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