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
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