Chris, > > If I do a SQL request ... does PostgreSQL use one or more processor ? > > Just one processor.
For one query, yes. For multiple queries, PostgreSQL will use multiple processors, and that's what he's concerned about given his earlier posts. -- Josh Berkus Aglio Database Solutions San Francisco ---------------------------(end of broadcast)--------------------------- TIP 9: the planner will ignore your desire to choose an index scan if your joining column's datatypes do not match