I have a simple query that scans each record, like this: select * from utente where luogorilasciodoc='ciao' The execution time BEFORE vacuum is: 1203ms The execution time AFTER vacuum is: 6656ms !!! What is going on? Thought that one vaccum the db to get better performance!
PostgreSQL Ver. 7.3.4 on linux Thank you Edoardo ---------------------------(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