class CoreFixtures(object):
# lambdas which return a tuple of ColumnElement objects.
# must return at least two objects that should compare differently.
# to test more varieties of "difference" additional objects can be added.
fixtures = [
lambda: (
column("q"),
column("x"),
column("q", Integer),
column("q", String),
),
lambda: (~column("q", Boolean), ~column("p", Boolean)),
lambda: (
table_a.c.a.label("foo"),
table_a.c.a.label("bar"),
table_a.c.b.label("foo"),
),
lambda: (
_label_reference(table_a.c.a.desc()),
_label_reference(table_a.c.a.asc()),
),
lambda: (_textual_label_reference("a"), _textual_label_reference("b")),
lambda: (
text("select a, b from table").columns(a=Integer, b=String),
text("select a, b, c from table").columns(
a=Integer, b=String, c=Integer),
text("select a, b, c from table where foo=:bar").bindparams(
bindparam("bar", type_=Integer)),
text("select a, b, c from table where foo=:foo").bindparams(
bindparam("foo", type_=Integer)),
text("select a, b, c from table where foo=:bar").bindparams(
bindparam("bar", type_=String)),
),
lambda: (
column("q") == column("x"),
column("q") == column("y"),
column("z") == column("x"),
column("z") + column("x"),
column("z") - column("x"),
column("x") - column("z"),
column("z") > column("x"),
column("x").in_([5, 7]),
column("x").in_([10, 7, 8]),
# note these two are mathematically equivalent but for now they
# are considered to be different
column("z") >= column("x"),
column("x") <= column("z"),
column("q").between(5, 6),
column("q").between(5, 6, symmetric=True),
column("q").like("somstr"),
column("q").like("somstr", escape="\\"),
column("q").like("somstr", escape="X"),
),
lambda: (
table_a.c.a,
table_a.c.a._annotate({"orm": True}),
table_a.c.a._annotate({
"orm": True
})._annotate({"bar": False}),
table_a.c.a._annotate({
"orm": True,
"parententity": MyEntity("a", table_a)
}),
table_a.c.a._annotate({
"orm": True,
"parententity": MyEntity("b", table_a)
}),
table_a.c.a._annotate(
{
"orm": True,
"parententity": MyEntity("b", select([table_a]))
}),
table_a.c.a._annotate({
"orm":
True,
"parententity":
MyEntity("b",
select([table_a]).where(table_a.c.a == 5)),
}),
),
lambda: (
table_a,
table_a._annotate({"orm": True}),
table_a._annotate({
"orm": True
})._annotate({"bar": False}),
table_a._annotate({
"orm": True,
"parententity": MyEntity("a", table_a)
}),
table_a._annotate({
"orm": True,
"parententity": MyEntity("b", table_a)
}),
table_a._annotate({
"orm": True,
"parententity": MyEntity("b", select([table_a]))
}),
),
lambda: (
table("a", column("x"), column("y")),
table("a", column("x"), column("y"))._annotate({"orm": True}),
table("b", column("x"), column("y"))._annotate({"orm": True}),
),
lambda: (
cast(column("q"), Integer),
cast(column("q"), Float),
cast(column("p"), Integer),
),
lambda: (
bindparam("x"),
bindparam("y"),
bindparam("x", type_=Integer),
bindparam("x", type_=String),
bindparam(None),
),
lambda: (_OffsetLimitParam("x"), _OffsetLimitParam("y")),
lambda: (func.foo(), func.foo(5), func.bar()),
lambda: (func.current_date(), func.current_time()),
lambda: (
func.next_value(Sequence("q")),
func.next_value(Sequence("p")),
),
lambda: (True_(), False_()),
lambda: (Null(), ),
lambda: (ReturnTypeFromArgs("foo"), ReturnTypeFromArgs(5)),
lambda: (FunctionElement(5), FunctionElement(5, 6)),
lambda: (func.count(), func.not_count()),
lambda: (func.char_length("abc"), func.char_length("def")),
lambda: (GenericFunction("a", "b"), GenericFunction("a")),
lambda: (CollationClause("foobar"), CollationClause("batbar")),
lambda: (
type_coerce(column("q", Integer), String),
type_coerce(column("q", Integer), Float),
type_coerce(column("z", Integer), Float),
),
lambda: (table_a.c.a, table_b.c.a),
lambda: (tuple_(1, 2), tuple_(3, 4)),
lambda: (func.array_agg([1, 2]), func.array_agg([3, 4])),
lambda: (
func.percentile_cont(0.5).within_group(table_a.c.a),
func.percentile_cont(0.5).within_group(table_a.c.b),
func.percentile_cont(0.5).within_group(table_a.c.a, table_a.c.b),
func.percentile_cont(0.5).within_group(table_a.c.a, table_a.c.b,
column("q")),
),
lambda: (
func.is_equal("a", "b").as_comparison(1, 2),
func.is_equal("a", "c").as_comparison(1, 2),
func.is_equal("a", "b").as_comparison(2, 1),
func.is_equal("a", "b", "c").as_comparison(1, 2),
func.foobar("a", "b").as_comparison(1, 2),
),
lambda: (
func.row_number().over(order_by=table_a.c.a),
func.row_number().over(order_by=table_a.c.a, range_=(0, 10)),
func.row_number().over(order_by=table_a.c.a, range_=(None, 10)),
func.row_number().over(order_by=table_a.c.a, rows=(None, 20)),
func.row_number().over(order_by=table_a.c.b),
func.row_number().over(order_by=table_a.c.a,
partition_by=table_a.c.b),
),
lambda: (
func.count(1).filter(table_a.c.a == 5),
func.count(1).filter(table_a.c.a == 10),
func.foob(1).filter(table_a.c.a == 10),
),
lambda: (
and_(table_a.c.a == 5, table_a.c.b == table_b.c.a),
and_(table_a.c.a == 5, table_a.c.a == table_b.c.a),
or_(table_a.c.a == 5, table_a.c.b == table_b.c.a),
ClauseList(table_a.c.a == 5, table_a.c.b == table_b.c.a),
ClauseList(table_a.c.a == 5, table_a.c.b == table_a.c.a),
),
lambda: (
case(whens=[(table_a.c.a == 5, 10), (table_a.c.a == 10, 20)]),
case(whens=[(table_a.c.a == 18, 10), (table_a.c.a == 10, 20)]),
case(whens=[(table_a.c.a == 5, 10), (table_a.c.b == 10, 20)]),
case(whens=[
(table_a.c.a == 5, 10),
(table_a.c.b == 10, 20),
(table_a.c.a == 9, 12),
]),
case(
whens=[(table_a.c.a == 5, 10), (table_a.c.a == 10, 20)],
else_=30,
),
case({
"wendy": "W",
"jack": "J"
}, value=table_a.c.a, else_="E"),
case({
"wendy": "W",
"jack": "J"
}, value=table_a.c.b, else_="E"),
case({
"wendy_w": "W",
"jack": "J"
}, value=table_a.c.a, else_="E"),
),
lambda: (
extract("foo", table_a.c.a),
extract("foo", table_a.c.b),
extract("bar", table_a.c.a),
),
lambda: (
Slice(1, 2, 5),
Slice(1, 5, 5),
Slice(1, 5, 10),
Slice(2, 10, 15),
),
lambda: (
select([table_a.c.a]),
select([table_a.c.a, table_a.c.b]),
select([table_a.c.b, table_a.c.a]),
select([table_a.c.b, table_a.c.a]).apply_labels(),
select([table_a.c.a]).where(table_a.c.b == 5),
select([table_a.c.a]).where(table_a.c.b == 5).where(table_a.c.a ==
10),
select([table_a.c.a]).where(table_a.c.b == 5).with_for_update(),
select([table_a.c.a]).where(table_a.c.b == 5).with_for_update(
nowait=True),
select([table_a.c.a]).where(table_a.c.b == 5).correlate(table_b),
select([table_a.c.a]).where(table_a.c.b == 5).correlate_except(
table_b),
),
lambda: (
future_select(table_a.c.a),
future_select(table_a.c.a).join(table_b, table_a.c.a == table_b.c.a
),
future_select(table_a.c.a).join_from(table_a, table_b, table_a.c.a
== table_b.c.a),
future_select(table_a.c.a).join_from(table_a, table_b),
future_select(table_a.c.a).join_from(table_c, table_b),
future_select(table_a.c.a).join(
table_b, table_a.c.a == table_b.c.a).join(
table_c, table_b.c.b == table_c.c.x),
future_select(table_a.c.a).join(table_b),
future_select(table_a.c.a).join(table_c),
future_select(table_a.c.a).join(table_b, table_a.c.a == table_b.c.b
),
future_select(table_a.c.a).join(table_c, table_a.c.a == table_c.c.x
),
),
lambda: (
select([table_a.c.a]).cte(),
select([table_a.c.a]).cte(recursive=True),
select([table_a.c.a]).cte(name="some_cte", recursive=True),
select([table_a.c.a]).cte(name="some_cte"),
select([table_a.c.a]).cte(name="some_cte").alias("other_cte"),
select([table_a.c.a]).cte(name="some_cte").union_all(
select([table_a.c.a])),
select([table_a.c.a]).cte(name="some_cte").union_all(
select([table_a.c.b])),
select([table_a.c.a]).lateral(),
select([table_a.c.a]).lateral(name="bar"),
table_a.tablesample(func.bernoulli(1)),
table_a.tablesample(func.bernoulli(1), seed=func.random()),
table_a.tablesample(func.bernoulli(1), seed=func.other_random()),
table_a.tablesample(func.hoho(1)),
table_a.tablesample(func.bernoulli(1), name="bar"),
table_a.tablesample(
func.bernoulli(1), name="bar", seed=func.random()),
),
lambda: (
table_a.insert(),
table_a.insert().values({})._annotate({"nocache": True}),
table_b.insert(),
table_b.insert().with_dialect_options(sqlite_foo="some value"),
table_b.insert().from_select(["a", "b"], select([table_a])),
table_b.insert().from_select(["a", "b"],
select([table_a]).where(table_a.c.a >
5)),
table_b.insert().from_select(["a", "b"], select([table_b])),
table_b.insert().from_select(["c", "d"], select([table_a])),
table_b.insert().returning(table_b.c.a),
table_b.insert().returning(table_b.c.a, table_b.c.b),
table_b.insert().inline(),
table_b.insert().prefix_with("foo"),
table_b.insert().with_hint("RUNFAST"),
table_b.insert().values(a=5, b=10),
table_b.insert().values(a=5),
table_b.insert().values({
table_b.c.a: 5,
"b": 10
})._annotate({"nocache": True}),
table_b.insert().values(a=7, b=10),
table_b.insert().values(a=5, b=10).inline(),
table_b.insert().values([{
"a": 5,
"b": 10
}, {
"a": 8,
"b": 12
}])._annotate({"nocache": True}),
table_b.insert().values([{
"a": 9,
"b": 10
}, {
"a": 8,
"b": 7
}])._annotate({"nocache": True}),
table_b.insert().values([(5, 10),
(8, 12)])._annotate({"nocache": True}),
table_b.insert().values([(5, 9),
(5, 12)])._annotate({"nocache": True}),
),
lambda: (
table_b.update(),
table_b.update().where(table_b.c.a == 5),
table_b.update().where(table_b.c.b == 5),
table_b.update().where(table_b.c.b == 5).with_dialect_options(
mysql_limit=10),
table_b.update().where(table_b.c.b == 5).with_dialect_options(
mysql_limit=10, sqlite_foo="some value"),
table_b.update().where(table_b.c.a == 5).values(a=5, b=10),
table_b.update().where(table_b.c.a == 5).values(a=5, b=10, c=12),
table_b.update().where(table_b.c.b == 5).values(a=5, b=10).
_annotate({"nocache": True}),
table_b.update().values(a=5, b=10),
table_b.update().values({
"a": 5,
table_b.c.b: 10
})._annotate({"nocache": True}),
table_b.update().values(a=7, b=10),
table_b.update().ordered_values(("a", 5), ("b", 10)),
table_b.update().ordered_values(("b", 10), ("a", 5)),
table_b.update().ordered_values((table_b.c.a, 5), ("b", 10)),
),
lambda: (
table_b.delete(),
table_b.delete().with_dialect_options(sqlite_foo="some value"),
table_b.delete().where(table_b.c.a == 5),
table_b.delete().where(table_b.c.b == 5),
),
lambda: (
values(
column("mykey", Integer),
column("mytext", String),
column("myint", Integer),
name="myvalues",
).data([(1, "textA", 99),
(2, "textB", 88)])._annotate({"nocache": True}),
values(
column("mykey", Integer),
column("mytext", String),
column("myint", Integer),
name="myothervalues",
).data([(1, "textA", 99),
(2, "textB", 88)])._annotate({"nocache": True}),
values(
column("mykey", Integer),
column("mytext", String),
column("myint", Integer),
name="myvalues",
).data([(1, "textA", 89),
(2, "textG", 88)])._annotate({"nocache": True}),
values(
column("mykey", Integer),
column("mynottext", String),
column("myint", Integer),
name="myvalues",
).data([(1, "textA", 99),
(2, "textB", 88)])._annotate({"nocache": True}),
# TODO: difference in type
# values(
# [
# column("mykey", Integer),
# column("mytext", Text),
# column("myint", Integer),
# ],
# (1, "textA", 99),
# (2, "textB", 88),
# alias_name="myvalues",
# ),
),
lambda: (
select([table_a.c.a]),
select([table_a.c.a]).prefix_with("foo"),
select([table_a.c.a]).prefix_with("foo", dialect="mysql"),
select([table_a.c.a]).prefix_with("foo", dialect="postgresql"),
select([table_a.c.a]).prefix_with("bar"),
select([table_a.c.a]).suffix_with("bar"),
),
lambda: (
select([table_a_2.c.a]),
select([table_a_2_fs.c.a]),
select([table_a_2_bs.c.a]),
),
lambda: (
select([table_a.c.a]),
select([table_a.c.a]).with_hint(None, "some hint"),
select([table_a.c.a]).with_hint(None, "some other hint"),
select([table_a.c.a]).with_hint(table_a, "some hint"),
select([table_a.c.a]).with_hint(table_a, "some hint").with_hint(
None, "some other hint"),
select([table_a.c.a]).with_hint(table_a, "some other hint"),
select([table_a.c.a]).with_hint(
table_a, "some hint", dialect_name="mysql"),
select([table_a.c.a]).with_hint(
table_a, "some hint", dialect_name="postgresql"),
),
lambda: (
table_a.join(table_b, table_a.c.a == table_b.c.a),
table_a.join(table_b,
and_(table_a.c.a == table_b.c.a, table_a.c.b == 1)),
table_a.outerjoin(table_b, table_a.c.a == table_b.c.a),
),
lambda: (
table_a.alias("a"),
table_a.alias("b"),
table_a.alias(),
table_b.alias("a"),
select([table_a.c.a]).alias("a"),
),
lambda: (
FromGrouping(table_a.alias("a")),
FromGrouping(table_a.alias("b")),
),
lambda: (
SelectStatementGrouping(select([table_a])),
SelectStatementGrouping(select([table_b])),
),
lambda: (
select([table_a.c.a]).scalar_subquery(),
select([table_a.c.a]).where(table_a.c.b == 5).scalar_subquery(),
),
lambda: (
exists().where(table_a.c.a == 5),
exists().where(table_a.c.b == 5),
),
lambda: (
union(select([table_a.c.a]), select([table_a.c.b])),
union(select([table_a.c.a]), select([table_a.c.b])).order_by("a"),
union_all(select([table_a.c.a]), select([table_a.c.b])),
union(select([table_a.c.a])),
union(
select([table_a.c.a]),
select([table_a.c.b]).where(table_a.c.b > 5),
),
),
lambda: (
table("a", column("x"), column("y")),
table("a", column("y"), column("x")),
table("b", column("x"), column("y")),
table("a", column("x"), column("y"), column("z")),
table("a", column("x"), column("y", Integer)),
table("a", column("q"), column("y", Integer)),
),
lambda: (table_a, table_b),
]
dont_compare_values_fixtures = [
lambda: (
# note the in_(...) all have different column names becuase
# otherwise all IN expressions would compare as equivalent
column("x").in_(random_choices(range(10), k=3)),
column("y").in_(
bindparam(
"q",
random_choices(range(10), k=random.randint(0, 7)),
expanding=True,
)),
column("z").in_(random_choices(range(10), k=random.randint(0, 7))),
column("x") == random.randint(1, 10),
)
]
def _complex_fixtures():
def one():
a1 = table_a.alias()
a2 = table_b_like_a.alias()
stmt = (select([table_a.c.a, a1.c.b,
a2.c.b]).where(table_a.c.b == a1.c.b).where(
a1.c.b == a2.c.b).where(a1.c.a == 5))
return stmt
def one_diff():
a1 = table_b_like_a.alias()
a2 = table_a.alias()
stmt = (select([table_a.c.a, a1.c.b,
a2.c.b]).where(table_a.c.b == a1.c.b).where(
a1.c.b == a2.c.b).where(a1.c.a == 5))
return stmt
def two():
inner = one().subquery()
stmt = select([table_b.c.a, inner.c.a, inner.c.b]).select_from(
table_b.join(inner, table_b.c.b == inner.c.b))
return stmt
def three():
a1 = table_a.alias()
a2 = table_a.alias()
ex = exists().where(table_b.c.b == a1.c.a)
stmt = (select([a1.c.a, a2.c.a]).select_from(
a1.join(a2, a1.c.b == a2.c.b)).where(ex))
return stmt
return [one(), one_diff(), two(), three()]
fixtures.append(_complex_fixtures)
def _statements_w_context_options_fixtures():
return [
select([table_a])._add_context_option(opt1, True),
select([table_a])._add_context_option(opt1, 5),
select([table_a])._add_context_option(opt1,
True)._add_context_option(
opt2, True),
select([table_a
])._add_context_option(opt1,
True)._add_context_option(opt2, 5),
select([table_a])._add_context_option(opt3, True),
]
fixtures.append(_statements_w_context_options_fixtures)
def _statements_w_anonymous_col_names():
def one():
c = column("q")
l = c.label(None)
# new case as of Id810f485c5f7ed971529489b84694e02a3356d6d
subq = select([l]).subquery()
# this creates a ColumnClause as a proxy to the Label() that has
# an anoymous name, so the column has one too.
anon_col = subq.c[0]
# then when BindParameter is created, it checks the label
# and doesn't double up on the anonymous name which is uncachable
return anon_col > 5
def two():
c = column("p")
l = c.label(None)
# new case as of Id810f485c5f7ed971529489b84694e02a3356d6d
subq = select([l]).subquery()
# this creates a ColumnClause as a proxy to the Label() that has
# an anoymous name, so the column has one too.
anon_col = subq.c[0]
# then when BindParameter is created, it checks the label
# and doesn't double up on the anonymous name which is uncachable
return anon_col > 5
def three():
l1, l2 = table_a.c.a.label(None), table_a.c.b.label(None)
stmt = select([table_a.c.a, table_a.c.b, l1, l2])
subq = stmt.subquery()
return select([subq]).where(subq.c[2] == 10)
return (
one(),
two(),
three(),
)
fixtures.append(_statements_w_anonymous_col_names)
class CompareAndCopyTest(fixtures.TestBase):
# lambdas which return a tuple of ColumnElement objects.
# must return at least two objects that should compare differently.
# to test more varieties of "difference" additional objects can be added.
fixtures = [
lambda: (
column("q"),
column("x"),
column("q", Integer),
column("q", String),
),
lambda: (~column("q", Boolean), ~column("p", Boolean)),
lambda: (
table_a.c.a.label("foo"),
table_a.c.a.label("bar"),
table_a.c.b.label("foo"),
),
lambda: (
_label_reference(table_a.c.a.desc()),
_label_reference(table_a.c.a.asc()),
),
lambda: (_textual_label_reference("a"), _textual_label_reference("b")),
lambda: (
text("select a, b from table").columns(a=Integer, b=String),
text("select a, b, c from table").columns(
a=Integer, b=String, c=Integer),
),
lambda: (
column("q") == column("x"),
column("q") == column("y"),
column("z") == column("x"),
),
lambda: (
cast(column("q"), Integer),
cast(column("q"), Float),
cast(column("p"), Integer),
),
lambda: (
bindparam("x"),
bindparam("y"),
bindparam("x", type_=Integer),
bindparam("x", type_=String),
bindparam(None),
),
lambda: (_OffsetLimitParam("x"), _OffsetLimitParam("y")),
lambda: (func.foo(), func.foo(5), func.bar()),
lambda: (func.current_date(), func.current_time()),
lambda: (
func.next_value(Sequence("q")),
func.next_value(Sequence("p")),
),
lambda: (True_(), False_()),
lambda: (Null(), ),
lambda: (ReturnTypeFromArgs("foo"), ReturnTypeFromArgs(5)),
lambda: (FunctionElement(5), FunctionElement(5, 6)),
lambda: (func.count(), func.not_count()),
lambda: (func.char_length("abc"), func.char_length("def")),
lambda: (GenericFunction("a", "b"), GenericFunction("a")),
lambda: (CollationClause("foobar"), CollationClause("batbar")),
lambda: (
type_coerce(column("q", Integer), String),
type_coerce(column("q", Integer), Float),
type_coerce(column("z", Integer), Float),
),
lambda: (table_a.c.a, table_b.c.a),
lambda: (tuple_([1, 2]), tuple_([3, 4])),
lambda: (func.array_agg([1, 2]), func.array_agg([3, 4])),
lambda: (
func.percentile_cont(0.5).within_group(table_a.c.a),
func.percentile_cont(0.5).within_group(table_a.c.b),
func.percentile_cont(0.5).within_group(table_a.c.a, table_a.c.b),
func.percentile_cont(0.5).within_group(table_a.c.a, table_a.c.b,
column("q")),
),
lambda: (
func.is_equal("a", "b").as_comparison(1, 2),
func.is_equal("a", "c").as_comparison(1, 2),
func.is_equal("a", "b").as_comparison(2, 1),
func.is_equal("a", "b", "c").as_comparison(1, 2),
func.foobar("a", "b").as_comparison(1, 2),
),
lambda: (
func.row_number().over(order_by=table_a.c.a),
func.row_number().over(order_by=table_a.c.a, range_=(0, 10)),
func.row_number().over(order_by=table_a.c.a, range_=(None, 10)),
func.row_number().over(order_by=table_a.c.a, rows=(None, 20)),
func.row_number().over(order_by=table_a.c.b),
func.row_number().over(order_by=table_a.c.a,
partition_by=table_a.c.b),
),
lambda: (
func.count(1).filter(table_a.c.a == 5),
func.count(1).filter(table_a.c.a == 10),
func.foob(1).filter(table_a.c.a == 10),
),
lambda: (
and_(table_a.c.a == 5, table_a.c.b == table_b.c.a),
and_(table_a.c.a == 5, table_a.c.a == table_b.c.a),
or_(table_a.c.a == 5, table_a.c.b == table_b.c.a),
ClauseList(table_a.c.a == 5, table_a.c.b == table_b.c.a),
ClauseList(table_a.c.a == 5, table_a.c.b == table_a.c.a),
),
lambda: (
case(whens=[(table_a.c.a == 5, 10), (table_a.c.a == 10, 20)]),
case(whens=[(table_a.c.a == 18, 10), (table_a.c.a == 10, 20)]),
case(whens=[(table_a.c.a == 5, 10), (table_a.c.b == 10, 20)]),
case(whens=[
(table_a.c.a == 5, 10),
(table_a.c.b == 10, 20),
(table_a.c.a == 9, 12),
]),
case(
whens=[(table_a.c.a == 5, 10), (table_a.c.a == 10, 20)],
else_=30,
),
case({
"wendy": "W",
"jack": "J"
}, value=table_a.c.a, else_="E"),
case({
"wendy": "W",
"jack": "J"
}, value=table_a.c.b, else_="E"),
case({
"wendy_w": "W",
"jack": "J"
}, value=table_a.c.a, else_="E"),
),
lambda: (
extract("foo", table_a.c.a),
extract("foo", table_a.c.b),
extract("bar", table_a.c.a),
),
lambda: (
Slice(1, 2, 5),
Slice(1, 5, 5),
Slice(1, 5, 10),
Slice(2, 10, 15),
),
lambda: (
select([table_a.c.a]),
select([table_a.c.a, table_a.c.b]),
select([table_a.c.b, table_a.c.a]),
select([table_a.c.a]).where(table_a.c.b == 5),
select([table_a.c.a]).where(table_a.c.b == 5).where(table_a.c.a ==
10),
select([table_a.c.a]).where(table_a.c.b == 5).with_for_update(),
select([table_a.c.a]).where(table_a.c.b == 5).with_for_update(
nowait=True),
select([table_a.c.a]).where(table_a.c.b == 5).correlate(table_b),
select([table_a.c.a]).where(table_a.c.b == 5).correlate_except(
table_b),
),
lambda: (
table_a.join(table_b, table_a.c.a == table_b.c.a),
table_a.join(table_b,
and_(table_a.c.a == table_b.c.a, table_a.c.b == 1)),
table_a.outerjoin(table_b, table_a.c.a == table_b.c.a),
),
lambda: (
table_a.alias("a"),
table_a.alias("b"),
table_a.alias(),
table_b.alias("a"),
select([table_a.c.a]).alias("a"),
),
lambda: (
FromGrouping(table_a.alias("a")),
FromGrouping(table_a.alias("b")),
),
lambda: (
select([table_a.c.a]).as_scalar(),
select([table_a.c.a]).where(table_a.c.b == 5).as_scalar(),
),
lambda: (
exists().where(table_a.c.a == 5),
exists().where(table_a.c.b == 5),
),
lambda: (
union(select([table_a.c.a]), select([table_a.c.b])),
union(select([table_a.c.a]), select([table_a.c.b])).order_by("a"),
union_all(select([table_a.c.a]), select([table_a.c.b])),
union(select([table_a.c.a])),
union(
select([table_a.c.a]),
select([table_a.c.b]).where(table_a.c.b > 5),
),
),
lambda: (
table("a", column("x"), column("y")),
table("a", column("y"), column("x")),
table("b", column("x"), column("y")),
table("a", column("x"), column("y"), column("z")),
table("a", column("x"), column("y", Integer)),
table("a", column("q"), column("y", Integer)),
),
lambda: (
Table("a", MetaData(), Column("q", Integer), Column("b", String)),
Table("b", MetaData(), Column("q", Integer), Column("b", String)),
),
]
@classmethod
def setup_class(cls):
# TODO: we need to get dialects here somehow, perhaps in test_suite?
[
importlib.import_module("sqlalchemy.dialects.%s" % d)
for d in dialects.__all__ if not d.startswith("_")
]
def test_all_present(self):
need = set(
cls for cls in class_hierarchy(ClauseElement)
if issubclass(cls, (ColumnElement, Selectable)) and "__init__" in
cls.__dict__ and not issubclass(cls, (Annotated))
and "orm" not in cls.__module__ and "crud" not in cls.__module__
and "dialects" not in cls.__module__ # TODO: dialects?
).difference({ColumnElement, UnaryExpression})
for fixture in self.fixtures:
case_a = fixture()
for elem in case_a:
for mro in type(elem).__mro__:
need.discard(mro)
is_false(bool(need), "%d Remaining classes: %r" % (len(need), need))
def test_compare(self):
for fixture in self.fixtures:
case_a = fixture()
case_b = fixture()
for a, b in itertools.combinations_with_replacement(
range(len(case_a)), 2):
if a == b:
is_true(
case_a[a].compare(case_b[b],
arbitrary_expression=True),
"%r != %r" % (case_a[a], case_b[b]),
)
else:
is_false(
case_a[a].compare(case_b[b],
arbitrary_expression=True),
"%r == %r" % (case_a[a], case_b[b]),
)
def test_cache_key(self):
def assert_params_append(assert_params):
def append(param):
if param._value_required_for_cache:
assert_params.append(param)
else:
is_(param.value, None)
return append
for fixture in self.fixtures:
case_a = fixture()
case_b = fixture()
for a, b in itertools.combinations_with_replacement(
range(len(case_a)), 2):
assert_a_params = []
assert_b_params = []
visitors.traverse_depthfirst(
case_a[a],
{},
{"bindparam": assert_params_append(assert_a_params)},
)
visitors.traverse_depthfirst(
case_b[b],
{},
{"bindparam": assert_params_append(assert_b_params)},
)
if assert_a_params:
assert_raises_message(
NotImplementedError,
"bindparams collection argument required ",
case_a[a]._cache_key,
)
if assert_b_params:
assert_raises_message(
NotImplementedError,
"bindparams collection argument required ",
case_b[b]._cache_key,
)
if not assert_a_params and not assert_b_params:
if a == b:
eq_(case_a[a]._cache_key(), case_b[b]._cache_key())
else:
ne_(case_a[a]._cache_key(), case_b[b]._cache_key())
def test_cache_key_gather_bindparams(self):
for fixture in self.fixtures:
case_a = fixture()
case_b = fixture()
# in the "bindparams" case, the cache keys for bound parameters
# with only different values will be the same, but the params
# themselves are gathered into a collection.
for a, b in itertools.combinations_with_replacement(
range(len(case_a)), 2):
a_params = {"bindparams": []}
b_params = {"bindparams": []}
if a == b:
a_key = case_a[a]._cache_key(**a_params)
b_key = case_b[b]._cache_key(**b_params)
eq_(a_key, b_key)
if a_params["bindparams"]:
for a_param, b_param in zip(a_params["bindparams"],
b_params["bindparams"]):
assert a_param.compare(b_param)
else:
a_key = case_a[a]._cache_key(**a_params)
b_key = case_b[b]._cache_key(**b_params)
if a_key == b_key:
for a_param, b_param in zip(a_params["bindparams"],
b_params["bindparams"]):
if not a_param.compare(b_param):
break
else:
assert False, "Bound parameters are all the same"
else:
ne_(a_key, b_key)
assert_a_params = []
assert_b_params = []
visitors.traverse_depthfirst(
case_a[a], {}, {"bindparam": assert_a_params.append})
visitors.traverse_depthfirst(
case_b[b], {}, {"bindparam": assert_b_params.append})
# note we're asserting the order of the params as well as
# if there are dupes or not. ordering has to be deterministic
# and matches what a traversal would provide.
eq_(a_params["bindparams"], assert_a_params)
eq_(b_params["bindparams"], assert_b_params)
def test_compare_col_identity(self):
stmt1 = (select([table_a.c.a, table_b.c.b
]).where(table_a.c.a == table_b.c.b).alias())
stmt1_c = (select([table_a.c.a, table_b.c.b
]).where(table_a.c.a == table_b.c.b).alias())
stmt2 = union(select([table_a]), select([table_b]))
stmt3 = select([table_b])
equivalents = {table_a.c.a: [table_b.c.a]}
is_false(
stmt1.compare(stmt2, use_proxies=True, equivalents=equivalents))
is_true(
stmt1.compare(stmt1_c, use_proxies=True, equivalents=equivalents))
is_true((table_a.c.a == table_b.c.b).compare(
stmt1.c.a == stmt1.c.b,
use_proxies=True,
equivalents=equivalents,
))
def test_copy_internals(self):
for fixture in self.fixtures:
case_a = fixture()
case_b = fixture()
assert case_a[0].compare(case_b[0])
clone = case_a[0]._clone()
clone._copy_internals()
assert clone.compare(case_b[0])
stack = [clone]
seen = {clone}
found_elements = False
while stack:
obj = stack.pop(0)
items = [
subelem for key, elem in clone.__dict__.items()
if key != "_is_clone_of" and elem is not None
for subelem in util.to_list(elem)
if (isinstance(subelem, (ColumnElement, ClauseList))
and subelem not in seen and not isinstance(
subelem, Immutable) and subelem is not case_a[0])
]
stack.extend(items)
seen.update(items)
if obj is not clone:
found_elements = True
# ensure the element will not compare as true
obj.compare = lambda other, **kw: False
obj.__visit_name__ = "dont_match"
if found_elements:
assert not clone.compare(case_b[0])
assert case_a[0].compare(case_b[0])
class CoreFixtures(object):
# lambdas which return a tuple of ColumnElement objects.
# must return at least two objects that should compare differently.
# to test more varieties of "difference" additional objects can be added.
fixtures = [
lambda: (
column("q"),
column("x"),
column("q", Integer),
column("q", String),
),
lambda: (~column("q", Boolean), ~column("p", Boolean)),
lambda: (
table_a.c.a.label("foo"),
table_a.c.a.label("bar"),
table_a.c.b.label("foo"),
),
lambda: (
_label_reference(table_a.c.a.desc()),
_label_reference(table_a.c.a.asc()),
),
lambda: (_textual_label_reference("a"), _textual_label_reference("b")),
lambda: (
text("select a, b from table").columns(a=Integer, b=String),
text("select a, b, c from table").columns(
a=Integer, b=String, c=Integer
),
text("select a, b, c from table where foo=:bar").bindparams(
bindparam("bar", type_=Integer)
),
text("select a, b, c from table where foo=:foo").bindparams(
bindparam("foo", type_=Integer)
),
text("select a, b, c from table where foo=:bar").bindparams(
bindparam("bar", type_=String)
),
),
lambda: (
column("q") == column("x"),
column("q") == column("y"),
column("z") == column("x"),
column("z") + column("x"),
column("z") - column("x"),
column("x") - column("z"),
column("z") > column("x"),
column("x").in_([5, 7]),
column("x").in_([10, 7, 8]),
# note these two are mathematically equivalent but for now they
# are considered to be different
column("z") >= column("x"),
column("x") <= column("z"),
column("q").between(5, 6),
column("q").between(5, 6, symmetric=True),
column("q").like("somstr"),
column("q").like("somstr", escape="\\"),
column("q").like("somstr", escape="X"),
),
lambda: (
table_a.c.a,
table_a.c.a._annotate({"orm": True}),
table_a.c.a._annotate({"orm": True})._annotate({"bar": False}),
table_a.c.a._annotate(
{"orm": True, "parententity": MyEntity("a", table_a)}
),
table_a.c.a._annotate(
{"orm": True, "parententity": MyEntity("b", table_a)}
),
table_a.c.a._annotate(
{"orm": True, "parententity": MyEntity("b", select([table_a]))}
),
),
lambda: (
cast(column("q"), Integer),
cast(column("q"), Float),
cast(column("p"), Integer),
),
lambda: (
bindparam("x"),
bindparam("y"),
bindparam("x", type_=Integer),
bindparam("x", type_=String),
bindparam(None),
),
lambda: (_OffsetLimitParam("x"), _OffsetLimitParam("y")),
lambda: (func.foo(), func.foo(5), func.bar()),
lambda: (func.current_date(), func.current_time()),
lambda: (
func.next_value(Sequence("q")),
func.next_value(Sequence("p")),
),
lambda: (True_(), False_()),
lambda: (Null(),),
lambda: (ReturnTypeFromArgs("foo"), ReturnTypeFromArgs(5)),
lambda: (FunctionElement(5), FunctionElement(5, 6)),
lambda: (func.count(), func.not_count()),
lambda: (func.char_length("abc"), func.char_length("def")),
lambda: (GenericFunction("a", "b"), GenericFunction("a")),
lambda: (CollationClause("foobar"), CollationClause("batbar")),
lambda: (
type_coerce(column("q", Integer), String),
type_coerce(column("q", Integer), Float),
type_coerce(column("z", Integer), Float),
),
lambda: (table_a.c.a, table_b.c.a),
lambda: (tuple_(1, 2), tuple_(3, 4)),
lambda: (func.array_agg([1, 2]), func.array_agg([3, 4])),
lambda: (
func.percentile_cont(0.5).within_group(table_a.c.a),
func.percentile_cont(0.5).within_group(table_a.c.b),
func.percentile_cont(0.5).within_group(table_a.c.a, table_a.c.b),
func.percentile_cont(0.5).within_group(
table_a.c.a, table_a.c.b, column("q")
),
),
lambda: (
func.is_equal("a", "b").as_comparison(1, 2),
func.is_equal("a", "c").as_comparison(1, 2),
func.is_equal("a", "b").as_comparison(2, 1),
func.is_equal("a", "b", "c").as_comparison(1, 2),
func.foobar("a", "b").as_comparison(1, 2),
),
lambda: (
func.row_number().over(order_by=table_a.c.a),
func.row_number().over(order_by=table_a.c.a, range_=(0, 10)),
func.row_number().over(order_by=table_a.c.a, range_=(None, 10)),
func.row_number().over(order_by=table_a.c.a, rows=(None, 20)),
func.row_number().over(order_by=table_a.c.b),
func.row_number().over(
order_by=table_a.c.a, partition_by=table_a.c.b
),
),
lambda: (
func.count(1).filter(table_a.c.a == 5),
func.count(1).filter(table_a.c.a == 10),
func.foob(1).filter(table_a.c.a == 10),
),
lambda: (
and_(table_a.c.a == 5, table_a.c.b == table_b.c.a),
and_(table_a.c.a == 5, table_a.c.a == table_b.c.a),
or_(table_a.c.a == 5, table_a.c.b == table_b.c.a),
ClauseList(table_a.c.a == 5, table_a.c.b == table_b.c.a),
ClauseList(table_a.c.a == 5, table_a.c.b == table_a.c.a),
),
lambda: (
case(whens=[(table_a.c.a == 5, 10), (table_a.c.a == 10, 20)]),
case(whens=[(table_a.c.a == 18, 10), (table_a.c.a == 10, 20)]),
case(whens=[(table_a.c.a == 5, 10), (table_a.c.b == 10, 20)]),
case(
whens=[
(table_a.c.a == 5, 10),
(table_a.c.b == 10, 20),
(table_a.c.a == 9, 12),
]
),
case(
whens=[(table_a.c.a == 5, 10), (table_a.c.a == 10, 20)],
else_=30,
),
case({"wendy": "W", "jack": "J"}, value=table_a.c.a, else_="E"),
case({"wendy": "W", "jack": "J"}, value=table_a.c.b, else_="E"),
case({"wendy_w": "W", "jack": "J"}, value=table_a.c.a, else_="E"),
),
lambda: (
extract("foo", table_a.c.a),
extract("foo", table_a.c.b),
extract("bar", table_a.c.a),
),
lambda: (
Slice(1, 2, 5),
Slice(1, 5, 5),
Slice(1, 5, 10),
Slice(2, 10, 15),
),
lambda: (
select([table_a.c.a]),
select([table_a.c.a, table_a.c.b]),
select([table_a.c.b, table_a.c.a]),
select([table_a.c.a]).where(table_a.c.b == 5),
select([table_a.c.a])
.where(table_a.c.b == 5)
.where(table_a.c.a == 10),
select([table_a.c.a]).where(table_a.c.b == 5).with_for_update(),
select([table_a.c.a])
.where(table_a.c.b == 5)
.with_for_update(nowait=True),
select([table_a.c.a]).where(table_a.c.b == 5).correlate(table_b),
select([table_a.c.a])
.where(table_a.c.b == 5)
.correlate_except(table_b),
),
lambda: (
select([table_a.c.a]).cte(),
select([table_a.c.a]).cte(recursive=True),
select([table_a.c.a]).cte(name="some_cte", recursive=True),
select([table_a.c.a]).cte(name="some_cte"),
select([table_a.c.a]).cte(name="some_cte").alias("other_cte"),
select([table_a.c.a])
.cte(name="some_cte")
.union_all(select([table_a.c.a])),
select([table_a.c.a])
.cte(name="some_cte")
.union_all(select([table_a.c.b])),
select([table_a.c.a]).lateral(),
select([table_a.c.a]).lateral(name="bar"),
table_a.tablesample(func.bernoulli(1)),
table_a.tablesample(func.bernoulli(1), seed=func.random()),
table_a.tablesample(func.bernoulli(1), seed=func.other_random()),
table_a.tablesample(func.hoho(1)),
table_a.tablesample(func.bernoulli(1), name="bar"),
table_a.tablesample(
func.bernoulli(1), name="bar", seed=func.random()
),
),
lambda: (
select([table_a.c.a]),
select([table_a.c.a]).prefix_with("foo"),
select([table_a.c.a]).prefix_with("foo", dialect="mysql"),
select([table_a.c.a]).prefix_with("foo", dialect="postgresql"),
select([table_a.c.a]).prefix_with("bar"),
select([table_a.c.a]).suffix_with("bar"),
),
lambda: (
select([table_a_2.c.a]),
select([table_a_2_fs.c.a]),
select([table_a_2_bs.c.a]),
),
lambda: (
select([table_a.c.a]),
select([table_a.c.a]).with_hint(None, "some hint"),
select([table_a.c.a]).with_hint(None, "some other hint"),
select([table_a.c.a]).with_hint(table_a, "some hint"),
select([table_a.c.a])
.with_hint(table_a, "some hint")
.with_hint(None, "some other hint"),
select([table_a.c.a]).with_hint(table_a, "some other hint"),
select([table_a.c.a]).with_hint(
table_a, "some hint", dialect_name="mysql"
),
select([table_a.c.a]).with_hint(
table_a, "some hint", dialect_name="postgresql"
),
),
lambda: (
table_a.join(table_b, table_a.c.a == table_b.c.a),
table_a.join(
table_b, and_(table_a.c.a == table_b.c.a, table_a.c.b == 1)
),
table_a.outerjoin(table_b, table_a.c.a == table_b.c.a),
),
lambda: (
table_a.alias("a"),
table_a.alias("b"),
table_a.alias(),
table_b.alias("a"),
select([table_a.c.a]).alias("a"),
),
lambda: (
FromGrouping(table_a.alias("a")),
FromGrouping(table_a.alias("b")),
),
lambda: (
SelectStatementGrouping(select([table_a])),
SelectStatementGrouping(select([table_b])),
),
lambda: (
select([table_a.c.a]).scalar_subquery(),
select([table_a.c.a]).where(table_a.c.b == 5).scalar_subquery(),
),
lambda: (
exists().where(table_a.c.a == 5),
exists().where(table_a.c.b == 5),
),
lambda: (
union(select([table_a.c.a]), select([table_a.c.b])),
union(select([table_a.c.a]), select([table_a.c.b])).order_by("a"),
union_all(select([table_a.c.a]), select([table_a.c.b])),
union(select([table_a.c.a])),
union(
select([table_a.c.a]),
select([table_a.c.b]).where(table_a.c.b > 5),
),
),
lambda: (
table("a", column("x"), column("y")),
table("a", column("y"), column("x")),
table("b", column("x"), column("y")),
table("a", column("x"), column("y"), column("z")),
table("a", column("x"), column("y", Integer)),
table("a", column("q"), column("y", Integer)),
),
lambda: (table_a, table_b),
]
dont_compare_values_fixtures = [
lambda: (
# note the in_(...) all have different column names becuase
# otherwise all IN expressions would compare as equivalent
column("x").in_(random_choices(range(10), k=3)),
column("y").in_(
bindparam(
"q",
random_choices(range(10), k=random.randint(0, 7)),
expanding=True,
)
),
column("z").in_(random_choices(range(10), k=random.randint(0, 7))),
column("x") == random.randint(1, 10),
)
]
def _complex_fixtures():
def one():
a1 = table_a.alias()
a2 = table_b_like_a.alias()
stmt = (
select([table_a.c.a, a1.c.b, a2.c.b])
.where(table_a.c.b == a1.c.b)
.where(a1.c.b == a2.c.b)
.where(a1.c.a == 5)
)
return stmt
def one_diff():
a1 = table_b_like_a.alias()
a2 = table_a.alias()
stmt = (
select([table_a.c.a, a1.c.b, a2.c.b])
.where(table_a.c.b == a1.c.b)
.where(a1.c.b == a2.c.b)
.where(a1.c.a == 5)
)
return stmt
def two():
inner = one().subquery()
stmt = select([table_b.c.a, inner.c.a, inner.c.b]).select_from(
table_b.join(inner, table_b.c.b == inner.c.b)
)
return stmt
def three():
a1 = table_a.alias()
a2 = table_a.alias()
ex = exists().where(table_b.c.b == a1.c.a)
stmt = (
select([a1.c.a, a2.c.a])
.select_from(a1.join(a2, a1.c.b == a2.c.b))
.where(ex)
)
return stmt
return [one(), one_diff(), two(), three()]
fixtures.append(_complex_fixtures)
# python sqlalchemy exist & select 'next' syntax from sqlalchemy.sql import func # ... ~exist(func.next_value()).where(...)