sql server 2008 - How to join two tables to select all data with and without the condition in MsSQL -

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i have 2 tables.

table_sale

s_date
s_store
s_item_id
s_qty

table_return

r_date
r_store
r_item_id
r_qty

imagine table_sale have 1000 row , table_return have 250 rows.i want
cindition.
(s_date=r_date , s_store=r_store , s_item_id=r_item_id)


think there 150 rows match condition. there 850 rows table_sale , 100 row in table_return not matching condition. want 150+100+850 data in 1 table. how can make join sir.?please me.

you should use full outer join. this...

select * table_sale full outer join table_return b on a.s_date = b.r_date                                , a.s_store = b.r_store                               , a.s_item_id = b.r_item_id

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