On Mon, May 20, 2019 at 12:09 PM Johann Spies <johann.spies@xxxxxxxxx> wrote: > The following illustrates the problem (removing double quotes from a string): Missing "select " in your examples, is it intentional? > js=# trim(both '"' from '"University of Cape Town"'); > ERROR: syntax error at or near "trim" > LINE 1: trim(both '"' from '"University of Cape Town"'); > js=# trim(both 'xyz' from 'yxTomxx'); > ERROR: syntax error at or near "trim" > LINE 1: trim(both 'xyz' from 'yxTomxx'); > ^ > I would think that "trim" if it works in this case would be a cheaper function than using rexexp_replace twice. ( copied from your mail AFTER "select " ): $ select trim(both '"' from '"University of Cape Town"'); btrim ------------------------- University of Cape Town (1 row) $ select trim(both 'xyz' from 'yxTomxx'); btrim ------- Tom (1 row) Francisco Olarte.