Re: create index with substr function

"Ray" <ray_siu@ge-ts.com.hk> writes:
> CREATE INDEX idx_doc_substr_doc_urn ON doc USING btree (SUBSTR(doc_urn,10));
> ERROR:  parser: parse error at or near "10" at character 68

This will work in 7.4, but not older releases.

            regards, tom lane