2016-08-15 12:18 GMT+02:00 Aleksander Alekseev <a.aleks...@postgrespro.ru>:

> > The global temporary tables has persistent rows in the catalogue. The
> > mapping to files can be marked as special and real mapping should be
> > only in memory.
> >
> > So the changes in catalogue related to global temporary tables are
> > pretty less frequently.
> I'm afraid I still don't get it. Let say I have an application that
> does `CREATE TEMP TABLE xx ; DROP TABLE xx` in every session all the
> time. Naturally there is not only one temp table per session. Could you
> explain please in more detail how exactly do these persistent rows help?
when you use global temporary tables, then you create it only once - like
usual tables.

you don't drop these tables.



> --
> Best regards,
> Aleksander Alekseev

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