On Wed, 2006-11-29 at 14:39 -0600, Dave Bodenstab wrote:
> I guess one cannot create an index on an element of an array?
>
> test=> create table test ( ordinal int[] );
> CREATE TABLE
> test=> create unique index x1 on test ( ordinal[1] );
> ERROR: syntax error at or near ")" at character 45
> LINE 1: create unique index x1 on test ( ordinal[1] );
> ^
You need more parenthesis.
test=> create unique index x1 on test ( ( ordinal[1] ) );
The reason is because "ordinal[1]" is an expression, similar to "ordinal
[1] + 5" which would also need parenthesis.
Hope this helps,
Jeff Davis
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