| From: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
|---|---|
| To: | "David G(dot) Johnston" <david(dot)g(dot)johnston(at)gmail(dot)com> |
| Cc: | "pgsql-bugs(at)postgresql(dot)org" <pgsql-bugs(at)postgresql(dot)org> |
| Subject: | Re: Odd "operator does not exist" message |
| Date: | 2016-01-09 05:09:39 |
| Message-ID: | 18772.1452316179@sss.pgh.pa.us |
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| Lists: | pgsql-bugs |
"David G. Johnston" <david(dot)g(dot)johnston(at)gmail(dot)com> writes:
> Stumbled across this and it just seemed unusual - though by no means
> cryptic.
> SELECT 'text' || AS label
> ERROR: operator does not exist: unknown ||
> The lack of a second type to the right of the operator symbol caught my
> attention.
> SELECT 1 + AS label
> ERROR: syntax error at or near "AS"
> Was seemingly what I had been expecting...
|| is allowed as a postfix operator, + is not ...
regards, tom lane
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