I am on version 7.3. I have been able to build a case insensitive index to keep the refullname column unique with the following:
CREATE UNIQUE INDEX resource_refullname ON resource USING btree (upper(refullname) text_ops);
However I have a table where I want to allow a duplicate refullname if the redtid field (int4) is different. When I try building an index using the command below I get an error. I still need the refullname to be case insensitive.
CREATE UNIQUE INDEX resource_refullname ON resource USING btree (redtid, (upper(refullname) text_ops));
The index will work with (redtid, refullname) but then the index is not case insensitive on refullname.
Thanks, Margaret Gillon, IS Dept., Chromalloy Los Angeles, ext. 297