Andrew Dunstan <[email protected]> writes:
> When did the SQL standard add any mention of ?
It's in SQL92. I don't have a copy of SQL89, or whatever the previous
spec was, to look at.
(So you could argue that Yu and Chen should've removed ? from the set of
allowed operator characters when they grafted SQL syntax onto Postgres.
But they didn't ...)
regards, tom lane
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