Alex <alex@xxxxxxxxxxxxxxx> writes:
> could anyone tell me if it is necessary to run a Vacuum after truncating
> a table or is that done automatically.
TRUNCATE does not require a vacuum; indeed there's nothing left *to* vacuum.
regards, tom lane
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TIP 9: In versions below 8.0, the planner will ignore your desire to
choose an index scan if your joining column's datatypes do not
match
