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From: Thomas F.O'Connell <[email protected]>
To: General <[email protected]>
Subject: Indexes on Expressions -- Parentheses
Date: Tue, 28 Sep 2004 23:44:28 -0400
Message-ID: <[email protected]> (raw)

 From 11.5 in the docs:

"The syntax of the CREATE INDEX command normally requires writing 
parentheses around index expressions, as shown in the second example. 
The parentheses may be omitted when the expression is just a function 
call, as in the first example."

But when I try this:

db=# CREATE INDEX expression_idx on some_table( extract( year from 
some_column ) );

I get a syntax error corresponding to the open parenthesis after 
extract (and whitespace is not the issue).

If I add an enclosing set of parentheses, E.g.:

db=# CREATE INDEX expression_idx on some_table( ( extract( year from 
some_column ) ) );

it works!

Is this a known issue?

-tfo

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