RFC: Add optional --ignored-tables argument

[plaes]

Changes

• Add optional --ignored-tables [filename] argument to specify file containing list of tables to be ignored.

Checklist

• You've added tests (in tests/) which would fail without your patch
• You've added a new changelog entry (in CHANGES.rst).

[agronholm]

What is the use case where you have so many tables to ignore that it'd be impractical to list them on the command line or to just list the tables you do want?

[plaes]

What is the use case where you have so many tables to ignore that it'd be impractical to list them on the command line or to just list the tables you do want?

Well, there are 910 tables in the ignore list (I want to ignore tables that are empty), and after that I am left with 622 tables which have some data...

My usecase - investigating an old ERP system (development seems to be started some time after 1991 where foreign keys did not yet exist). ;)

[sheinbergon]

@agronholm I don't mind accepting such a feature

[agronholm]

At the very least the options need to be consistent. If --tables accepts a comma-separated list of tables but --ignore-tables (which would intuitively feel like its negative counterpart) accepts a path instead, they're not consistent.