Tom Lane schrieb:
Andreas <maps...@gmx.net> writes:
So I had the missconception that UNIQUE (...) within CREATE TABLE (...) was actually just an shorter way to define a unique index which it is not.

Well, it is that --- it just doesn't provide access to all the features
that CREATE INDEX does.
So as it is a shortcut for "create index" then why would the function call of upper not be accepted when the sql parser maps the uniqe-constraint into the "create index" command? The parser could just take everything in the ( ) and use it as is.

Somehow there must be a notice in the meta data to mark the difference.
pgAdmin shows a unique as constraint but no index when created within "create table".
The unique-index only shows up when created seperately.


regards
Andreas



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