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pmnox asked on

Can I use union with sql subqueries?

Can I use union with sql subqueries?

SELECT * FROM TABLE WHERE 1 = (SELECT 1 FROM msysaccessobjects UNION SELECT 1 FROM msysaccessobjects)

I tried to use union with sql subqueries. However I get an error when I try to compile this sql query. Does UNION work with sql subqueries?
Microsoft AccessSQL

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pmnox

8/22/2022 - Mon
Thomasian

Yes, you can.

But since your subquery will return more than 1 value, you need to use IN instead of =

SELECT * FROM TABLE WHERE 1 IN (SELECT 1 FROM msysaccessobjects UNION SELECT 1 FROM msysaccessobjects)
ASKER CERTIFIED SOLUTION
Thomasian

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peter57r

Can you explain the point of the query.

It won't work with a union in the subquery but even if it did , the query would be just the same as one which just says:
Select * from table
ASKER
pmnox

Thx for help.
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