15.09.2015 12:11, Vik Fearing:
On 09/15/2015 10:57 AM, David Rowley wrote:
I agree, that form
CREATE UNIQUE INDEX i ON t (f1, f2, f3) INCLUDE (f4)
is clear. f4 will be used in row compare and actually planner will be able
to use it as unique index (f1, f2, f3) with additional f4 or as
as unique index (f1, f2, f3, f4), because uniqueness on (f1, f2, f3) gives
warranty of uniqueness on (f1, f2, f3, f4)
I'd vote for this too. However, INCLUDE does not seem to be a reserved word
at the moment.
What about CREATE UNIQUE INDEX i ON t (f1, f2, f3) WITH (f4); ?
WITH seems ambiguity to me. It refers to CTE, so I expect to see after
that a kind of query expression. But maybe that's just matter of habit.
BTW, that's the first syntax change I'm working with.
Is there any convention in PostgreSQL about new keywords and so on?
Where can I find it?
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Anastasia Lubennikova
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The Russian Postgres Company
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