Support creating indexes on expressions and using function as default

[yuku]

• 1668c76 Support creating indexes on expressions:

  create table test (col jsonb);
  create unique index uniq on test (jsonb_extract_path_text(col, 'foo', 'bar'));
  --                                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

  • The high priority thing described in this comment.
  • If func_name(col_name, 'param1') is given as index, Postgres internally stores it as func_name(col_name, VARIADIC ARRAY['param1'::text]). So this PR also adds simple array constructor syntax support to psqldef. 964d995

• 8f21a05 Support using function as default:

  create table test (id uuid default generate_uuid_v4());
  --                                 ^^^^^^^^^^^^^^^^^^

  • The low priority thing described in this comment.

• 2fd5f9d Enable to drop index form tables in non-public table.

  • I found the bug while writing a test case for other changes.

Chore

• Added publicAndNonPublicSchemaTestCases variable to postgres_test.go
  • It makes us easy to write same test case for both public and non-public schemas.

[yuku]

Let me add a bug fix commit 🙇

In master, create view non_public.foo ... always cause create or replace view public.foo ....
38b6f1c fixes the issue.

[k0kubun]

Thanks!