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# testing/suite/test_update_delete.py
# Copyright (C) 2005-2025 the SQLAlchemy authors and contributors
# <see AUTHORS file>
#
# This module is part of SQLAlchemy and is released under
# the MIT License: https://www.opensource.org/licenses/mit-license.php
# mypy: ignore-errors
from .. import fixtures
from ..assertions import eq_
from ..schema import Column
from ..schema import Table
from ... import Integer
from ... import String
from ... import testing
class SimpleUpdateDeleteTest(fixtures.TablesTest):
run_deletes = "each"
__requires__ = ("sane_rowcount",)
__backend__ = True
@classmethod
def define_tables(cls, metadata):
Table(
"plain_pk",
metadata,
Column("id", Integer, primary_key=True),
Column("data", String(50)),
)
@classmethod
def insert_data(cls, connection):
connection.execute(
cls.tables.plain_pk.insert(),
[
{"id": 1, "data": "d1"},
{"id": 2, "data": "d2"},
{"id": 3, "data": "d3"},
],
)
def test_update(self, connection):
t = self.tables.plain_pk
r = connection.execute(
t.update().where(t.c.id == 2), dict(data="d2_new")
)
assert not r.is_insert
assert not r.returns_rows
assert r.rowcount == 1
eq_(
connection.execute(t.select().order_by(t.c.id)).fetchall(),
[(1, "d1"), (2, "d2_new"), (3, "d3")],
)
def test_delete(self, connection):
t = self.tables.plain_pk
r = connection.execute(t.delete().where(t.c.id == 2))
assert not r.is_insert
assert not r.returns_rows
assert r.rowcount == 1
eq_(
connection.execute(t.select().order_by(t.c.id)).fetchall(),
[(1, "d1"), (3, "d3")],
)
@testing.variation("criteria", ["rows", "norows", "emptyin"])
@testing.requires.update_returning
def test_update_returning(self, connection, criteria):
t = self.tables.plain_pk
stmt = t.update().returning(t.c.id, t.c.data)
if criteria.norows:
stmt = stmt.where(t.c.id == 10)
elif criteria.rows:
stmt = stmt.where(t.c.id == 2)
elif criteria.emptyin:
stmt = stmt.where(t.c.id.in_([]))
else:
criteria.fail()
r = connection.execute(stmt, dict(data="d2_new"))
assert not r.is_insert
assert r.returns_rows
eq_(r.keys(), ["id", "data"])
if criteria.rows:
eq_(r.all(), [(2, "d2_new")])
else:
eq_(r.all(), [])
eq_(
connection.execute(t.select().order_by(t.c.id)).fetchall(),
(
[(1, "d1"), (2, "d2_new"), (3, "d3")]
if criteria.rows
else [(1, "d1"), (2, "d2"), (3, "d3")]
),
)
@testing.variation("criteria", ["rows", "norows", "emptyin"])
@testing.requires.delete_returning
def test_delete_returning(self, connection, criteria):
t = self.tables.plain_pk
stmt = t.delete().returning(t.c.id, t.c.data)
if criteria.norows:
stmt = stmt.where(t.c.id == 10)
elif criteria.rows:
stmt = stmt.where(t.c.id == 2)
elif criteria.emptyin:
stmt = stmt.where(t.c.id.in_([]))
else:
criteria.fail()
r = connection.execute(stmt)
assert not r.is_insert
assert r.returns_rows
eq_(r.keys(), ["id", "data"])
if criteria.rows:
eq_(r.all(), [(2, "d2")])
else:
eq_(r.all(), [])
eq_(
connection.execute(t.select().order_by(t.c.id)).fetchall(),
(
[(1, "d1"), (3, "d3")]
if criteria.rows
else [(1, "d1"), (2, "d2"), (3, "d3")]
),
)
__all__ = ("SimpleUpdateDeleteTest",)
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