Running UPDATE And DELETE SQL Statements with left join query

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SQL-Server-2008R2

is it possible that we can use UPDATE And DELETE SQL Statements with left join query ?

Posted 12-Dec-15 20:20pm

VishnuAgarwal

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Tadit Dash (ତଡିତ୍ କୁମାର ଦାଶ) 13-Dec-15 2:40am

Why you need a left join?

2 solutions

Solution 2

Yes...
As both DELETE[^] and UPDATE[^] may have a FROM[^] clause, and any FROM clause can have JOIN in it - the answer is yes...
To get more defined answer, you should ask with more details...

Posted 12-Dec-15 22:11pm

Kornfeld Eliyahu Peter

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Rajdeep Debnath · Accepted Answer · 2015-12-12T22:09:00

Yes it is possible...

Please check the below

C#

update Table_1
set columnTable_1 = @parameter_1
from Table_1 t1
inner join Table_2 t2
on t1.columnTable_1 = t2.columnTable_2
where t2.columnTable_1 = @parameter_2 

delete from Table_1
from Table_1 t1
inner join Table_2 t2
on t1.columnTable_1 = t2.columnTable_2
where t2.columnTable_2 = @parameter_1

Sample code......

SQL

create type abcd as table
(
	id int,
	salary int
)
create type nameAbcd as table
(
	id int,
	name varchar(3)
)

go
--drop type nameAbcd

declare @p abcd
insert into @p values(1, 100)
insert into @p values(2, 5000)
declare @q nameAbcd
insert into @q values(1, 'abc')
insert into @q values(2, 'xyz')


select * from @p a inner join @q b on a.id = b.id

update @p
set salary = 59
from @p a
inner join @q b
on a.id = b.id
where b.name = 'xyz'


select * from @p a inner join @q b on a.id = b.id

delete from @p
from @p a
inner join @q b
on a.id = b.id
where b.name = 'abc'


select * from @p a inner join @q b on a.id = b.id