Re: proposal: possibility to read dumped table's name from file

pá 29. 5. 2020 v 16:28 odesílatel Tom Lane <tgl@sss.pgh.pa.us> napsal:

> Pavel Stehule <pavel.stehule@gmail.com> writes:
> > one my customer has to specify dumped tables name by name. After years
> and
> > increasing database size and table numbers he has problem with too short
> > command line. He need to read the list of tables from file (or from
> stdin).
>
> I guess the question is why.  That seems like an enormously error-prone
> approach.  Can't they switch to selecting schemas?  Or excluding the
> hopefully-short list of tables they don't want?
>

It is not typical application. It is a analytic application when the schema
of database is  based on dynamic specification of end user (end user can do
customization every time). So schema is very dynamic.

For example - typical server has about four thousand databases and every
database has some between 1K .. 10K tables.

Another specific are different versions of data in different tables. A user
can work with one set of data (one set of tables) and a application
prepares new set of data (new set of tables). Load can be slow, because
sometimes bigger tables are filled (about forty GB). pg_dump backups one
set of tables (little bit like snapshot of data). So it is strange OLAP
(but successfull) application.

Regards

Pavel



>                         regards, tom lane
>