Hello,

The pgstattuple extension is pretty useful to monitor table bloat.

I have few large tables with bytea column that represent TB of data that I 
would need to monitor.
I ran pgstattuple() on the associated toast tables but it takes hours to run.

pgstattuple_approx() would be a nice alternative but it does not accept toast 
tables.
It can be run on pg_largeobject which is very similar to the toast table 
structures.
Why pgstattuple_approx() cannot be run on toast tables?

Regards,

Jean-Marc Lessard
Administrateur de base de donn?es / Database Administrator

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