"dfx" <dfx@xxxxxx> writes: > how I can check the existance of temporary table? > I.e. wich query I have to use to know if MY_TEMP_TABLE exists? As of 8.2 you can do SELECT ... FROM pg_class WHERE relname = 'whatever' AND relnamespace = pg_my_temp_schema(); In earlier releases pg_my_temp_schema() isn't built in, so you have to do some pushups to determine which schema is your temp schema. regards, tom lane