mirror of
https://github.com/sqlalchemy/sqlalchemy.git
synced 2026-05-16 13:47:20 -04:00
Mike Bayer
0aa38a9737
The recipe given out on the ML for improving ABC fails in 1.4 due to find_tables() missing out on subqueries, which is due to the refactor of Alias into multiple sub-types. Change-Id: Idd2803b26a84b28db28e0b8c328b8f24550577e4
51 lines
1.5 KiB
Python
51 lines
1.5 KiB
Python
from sqlalchemy import Column
|
|
from sqlalchemy import Integer
|
|
from sqlalchemy import MetaData
|
|
from sqlalchemy import select
|
|
from sqlalchemy import String
|
|
from sqlalchemy import Table
|
|
from sqlalchemy.sql import util as sql_util
|
|
from sqlalchemy.sql.elements import ColumnElement
|
|
from sqlalchemy.testing import eq_
|
|
from sqlalchemy.testing import fixtures
|
|
|
|
|
|
class MiscTest(fixtures.TestBase):
|
|
def test_column_element_no_visit(self):
|
|
class MyElement(ColumnElement):
|
|
_traverse_internals = []
|
|
|
|
eq_(sql_util.find_tables(MyElement(), check_columns=True), [])
|
|
|
|
def test_find_tables_selectable(self):
|
|
metadata = MetaData()
|
|
common = Table(
|
|
"common",
|
|
metadata,
|
|
Column("id", Integer, primary_key=True),
|
|
Column("data", Integer),
|
|
Column("extra", String(45)),
|
|
)
|
|
|
|
subset_select = select([common.c.id, common.c.data]).alias()
|
|
|
|
eq_(sql_util.find_tables(subset_select), [common])
|
|
|
|
def test_find_tables_aliases(self):
|
|
metadata = MetaData()
|
|
common = Table(
|
|
"common",
|
|
metadata,
|
|
Column("id", Integer, primary_key=True),
|
|
Column("data", Integer),
|
|
Column("extra", String(45)),
|
|
)
|
|
|
|
calias = common.alias()
|
|
subset_select = select([common.c.id, calias.c.data]).subquery()
|
|
|
|
eq_(
|
|
set(sql_util.find_tables(subset_select, include_aliases=True)),
|
|
{common, calias, subset_select},
|
|
)
|