Thalis Kalfigkopoulos <[email protected]> writes:
> I see in the docs the following:
> SELECT current_date + s.a AS dates FROM generate_series(0,14,7) AS s(a);
> Trying it as:
> SELECT current_date + a AS dates FROM generate_series(0,14,7) AS a;
> yields exactly the same result.
> Does the finer granularity/expressiveness offer some extra
> functionality in some cases or is it a matter of style?
IIRC, it's important for functions returning composite types. For a
function returning scalar, "AS a" is equivalent to "AS a(a)".
regards, tom lane
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