Christopher Browne <cbbro...@gmail.com> writes:
> I suggest the though of embracing statement modifiers in DDL, with
> some options possible:
> a) { DDL STATEMENT } IF CONDITION;
> b) { DDL STATEMENT } UNLESS CONDITION;
Just saying. I hate that. Makes it harder to read, that last bit at the
end of the command changes it all. It's cool for a linguist, I guess,
but we're not typing sentences at the psql prompt…
> where CONDITION has several possible forms:
> i) {IF|UNLESS} ( SQL expression returning T/F )
> ii) {IF|UNLESS} {EXISTS|NOT EXISTS}
> {TABLE|SCHEMA|COLUMN|FUNCTION|...} object_name
Now we're talking about T-SQL? Sorry, I suppose you didn't mean to lead
us that way, but I couldn't resist comparing. Soon enough you want a
full programming language there.
Regards,
--
Dimitri Fontaine
http://2ndQuadrant.fr PostgreSQL : Expertise, Formation et Support
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