Problem

There is no option to ignore table during introspection (prisma introspect)
Actually all table are in the schema.

For example _migrations tables don't have to be in the schema.

Suggested solution

I suggest to add a cli argument --ignoreTablePattern whose names match a regexp pattern.
For example, tables whose names begin with an underscore.

prisma introspect --ignoreTablePattern '^_'

Alternatives

If too complexe. The simplest solution can also be --ignoreUnderscoreTable but less custom