Postgres: sqlgen
Postgres: create & drop
Postgres: fix drop table
Postgres: fix test_insert setup
Postgres: insert
Postgres: insert - make SERIAL UNIQUE
Postgres: test_insert float roundtrip test
Postgres: fix more tests
Postgres: fix connection setup
Postgres: fix boolean
Postgres: date ops
Postgres: workaround case based tests
Postgres: workaround case based tests
Postgres: remote YEAR_MONTH
Postgres: fix DAY op
Postgres: make psycopg2 return unicode instead of str