Re: OR-ing rows of bits

Thomas T. Thai wrote:

>what's the best way of OR-ing rows of bits or integers? SUM works for bits
>that are all atomic (1, 2, 4, 8, ...) but not for inclusive (1, 3, 7,
>...).
>
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I'd bet for a custom aggregate function.

Something like the ready-to-go statement

CREATE AGGREGATE int4or_aggregate ( BASETYPE=int4, SFUNC=int4or,
STYPE=int4 );

Hope that helps.

Antonio Fiol