If a query returns, say the following results: id value 0 a 0 b 0 c 1 a 1 b
How do I just choose a preferred element say value 'a' over any other elements returned, that is the value returned is from a subquery to a larger query? Thanks.
If a query returns, say the following results: id value 0 a 0 b 0 c 1 a 1 b
How do I just choose a preferred element say value 'a' over any other elements returned, that is the value returned is from a subquery to a larger query? Thanks.