> I'm asking, because we have a bigger datawarehouse and dump the data for
> a backup every night. Unfortunately, the backup now takes realy long.
You may want to consider upgrading and using PITR backups instead. They
can be much faster to both backup and to restore if something goes
wrong.
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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
