PostgreSQL: 8.2
When you create a foreign key to a table is there an index that is created on the foreign key automatically? Example: Table A has a field called ID. Table B has a field called fk_a_id which has a constraint of being a foreign key to table A to field ID. Is there an index automatically created on field fk_a_id in table B when I create a foreign key constraint? I assume yes. But I wanted to check. I did not see it specifically mentioned in the documentation. I also see "CREATE TABLE / PRIMARY KEY will create implicit index" when creating a primary key but I don't see any similar statement when creating a foreign key. Thanks, Lance Campbell Project Manager/Software Architect Web Services at Public Affairs University of Illinois 217.333.0382 http://webservices.uiuc.edu
