Wells Oliver <woli...@padres.com> writes:
> Folks, experiencing an odd issue. The following on an 8.4 server: select
> 'foo'::text || 123
> Blows up, saying:
> ERROR: operator is not unique: text || integer
> LINE 1: select 'fo'::text || 123;
> ^
> HINT: Could not choose a best candidate operator. You might need to add
> explicit type casts.
> But on another postgres 8.4 server, it properly returns a concatenated string.
> Any tips on how/where I can track down why/where there might be duplicate
> operators?
psql's "\do ||" might help. Presumably somebody's stuck a user-defined
operator named || into that database ...
regards, tom lane
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