Re: creating index using function

Matthew Engelbert <mje1975(at)yahoo(dot)com> writes:
> CREATE INDEX ecn_sales_index_day on ecn_sales (extract(DOY FROM tv_time));
> ERROR: syntax error at or near "(" at character 55

Assuming you're using 7.4, put an extra pair of parens there:

CREATE INDEX ecn_sales_index_day on ecn_sales ((extract(DOY FROM tv_time)));

In earlier PG versions you'll need a wrapper function around the extract
call. It looks like a function, but it isn't quite one because of the
weird syntax.

regards, tom lane