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How to select based on the condition of a column exists
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Subject
: How to select based on the condition of a column exists
From
: Shaozhong SHI <shishaozhong@xxxxxxxxx>
Date
: Fri, 26 Aug 2022 15:01:27 +0100
The following does not work.
select count(test) from table where exists (select test from table)
How to select based on the condition of a column exists? It column test is not exists, a message need to be returned.
Regards,
David
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