mirror of
https://github.com/sqlalchemy/sqlalchemy.git
synced 2026-05-10 02:39:59 -04:00
Mike Bayer
713a4e19fa
- resolved some serious speed hits I missed, we need to ensure only deannotated columns are used in the local/remote collections and soforth so that hash lookups against mapped columns don't dig into __eq__() - fix some other parity mismatches regarding stuff from [ticket:2453], including finding another case where _deep_annotate() was doing the wrong thing, new tests. - [feature] Major rewrite of relationship() internals now allow join conditions which include columns pointing to themselves within composite foreign keys. A new API for very specialized primaryjoin conditions is added, allowing conditions based on SQL functions, CAST, etc. to be handled by placing the annotation functions remote() and foreign() inline within the expression when necessary. Previous recipes using the semi-private _local_remote_pairs approach can be upgraded to this new approach. [ticket:1401]
1335 lines
52 KiB
Python
1335 lines
52 KiB
Python
from sqlalchemy import *
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from sqlalchemy.sql import table, column, ClauseElement, operators
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from sqlalchemy.sql.expression import _clone, _from_objects
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from test.lib import *
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from sqlalchemy.sql.visitors import *
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from sqlalchemy import util, exc
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from sqlalchemy.sql import util as sql_util
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from test.lib.testing import eq_, ne_, assert_raises
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class TraversalTest(fixtures.TestBase, AssertsExecutionResults):
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"""test ClauseVisitor's traversal, particularly its
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ability to copy and modify a ClauseElement in place."""
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@classmethod
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def setup_class(cls):
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global A, B
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# establish two ficticious ClauseElements.
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# define deep equality semantics as well as deep
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# identity semantics.
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class A(ClauseElement):
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__visit_name__ = 'a'
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def __init__(self, expr):
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self.expr = expr
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def is_other(self, other):
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return other is self
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__hash__ = ClauseElement.__hash__
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def __eq__(self, other):
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return other.expr == self.expr
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def __ne__(self, other):
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return other.expr != self.expr
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def __str__(self):
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return "A(%s)" % repr(self.expr)
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class B(ClauseElement):
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__visit_name__ = 'b'
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def __init__(self, *items):
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self.items = items
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def is_other(self, other):
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if other is not self:
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return False
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for i1, i2 in zip(self.items, other.items):
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if i1 is not i2:
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return False
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return True
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__hash__ = ClauseElement.__hash__
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def __eq__(self, other):
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for i1, i2 in zip(self.items, other.items):
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if i1 != i2:
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return False
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return True
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def __ne__(self, other):
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for i1, i2 in zip(self.items, other.items):
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if i1 != i2:
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return True
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return False
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def _copy_internals(self, clone=_clone):
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self.items = [clone(i) for i in self.items]
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def get_children(self, **kwargs):
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return self.items
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def __str__(self):
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return "B(%s)" % repr([str(i) for i in self.items])
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def test_test_classes(self):
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a1 = A("expr1")
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struct = B(a1, A("expr2"), B(A("expr1b"), A("expr2b")), A("expr3"))
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struct2 = B(a1, A("expr2"), B(A("expr1b"), A("expr2b")), A("expr3"))
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struct3 = B(a1, A("expr2"), B(A("expr1b"),
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A("expr2bmodified")), A("expr3"))
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assert a1.is_other(a1)
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assert struct.is_other(struct)
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assert struct == struct2
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assert struct != struct3
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assert not struct.is_other(struct2)
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assert not struct.is_other(struct3)
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def test_clone(self):
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struct = B(A("expr1"), A("expr2"), B(A("expr1b"),
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A("expr2b")), A("expr3"))
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class Vis(CloningVisitor):
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def visit_a(self, a):
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pass
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def visit_b(self, b):
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pass
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vis = Vis()
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s2 = vis.traverse(struct)
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assert struct == s2
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assert not struct.is_other(s2)
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def test_no_clone(self):
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struct = B(A("expr1"), A("expr2"), B(A("expr1b"),
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A("expr2b")), A("expr3"))
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class Vis(ClauseVisitor):
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def visit_a(self, a):
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pass
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def visit_b(self, b):
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pass
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vis = Vis()
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s2 = vis.traverse(struct)
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assert struct == s2
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assert struct.is_other(s2)
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def test_change_in_place(self):
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struct = B(A("expr1"), A("expr2"), B(A("expr1b"),
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A("expr2b")), A("expr3"))
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struct2 = B(A("expr1"), A("expr2modified"), B(A("expr1b"),
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A("expr2b")), A("expr3"))
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struct3 = B(A("expr1"), A("expr2"), B(A("expr1b"),
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A("expr2bmodified")), A("expr3"))
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class Vis(CloningVisitor):
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def visit_a(self, a):
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if a.expr == "expr2":
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a.expr = "expr2modified"
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def visit_b(self, b):
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pass
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vis = Vis()
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s2 = vis.traverse(struct)
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assert struct != s2
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assert not struct.is_other(s2)
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assert struct2 == s2
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class Vis2(CloningVisitor):
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def visit_a(self, a):
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if a.expr == "expr2b":
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a.expr = "expr2bmodified"
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def visit_b(self, b):
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pass
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vis2 = Vis2()
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s3 = vis2.traverse(struct)
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assert struct != s3
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assert struct3 == s3
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def test_visit_name(self):
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# override fns in testlib/schema.py
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from sqlalchemy import Column
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class CustomObj(Column):
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pass
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assert CustomObj.__visit_name__ == Column.__visit_name__ == 'column'
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foo, bar = CustomObj('foo', String), CustomObj('bar', String)
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bin = foo == bar
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s = set(ClauseVisitor().iterate(bin))
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assert set(ClauseVisitor().iterate(bin)) == set([foo, bar, bin])
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class BinaryEndpointTraversalTest(fixtures.TestBase):
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"""test the special binary product visit"""
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def _assert_traversal(self, expr, expected):
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canary = []
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def visit(binary, l, r):
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canary.append((binary.operator, l, r))
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print binary.operator, l, r
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sql_util.visit_binary_product(visit, expr)
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eq_(
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canary, expected
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)
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def test_basic(self):
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a, b = column("a"), column("b")
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self._assert_traversal(
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a == b,
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[
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(operators.eq, a, b)
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]
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)
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def test_with_tuples(self):
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a, b, c, d, b1, b1a, b1b, e, f = (
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column("a"),
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column("b"),
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column("c"),
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column("d"),
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column("b1"),
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column("b1a"),
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column("b1b"),
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column("e"),
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column("f")
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)
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expr = tuple_(
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a, b, b1==tuple_(b1a, b1b == d), c
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) > tuple_(
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func.go(e + f)
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)
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self._assert_traversal(
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expr,
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[
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(operators.gt, a, e),
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(operators.gt, a, f),
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(operators.gt, b, e),
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(operators.gt, b, f),
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(operators.eq, b1, b1a),
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(operators.eq, b1b, d),
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(operators.gt, c, e),
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(operators.gt, c, f)
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]
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)
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def test_composed(self):
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a, b, e, f, q, j, r = (
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column("a"),
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column("b"),
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column("e"),
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column("f"),
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column("q"),
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column("j"),
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column("r"),
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)
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expr = and_(
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(a + b) == q + func.sum(e + f),
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and_(
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j == r,
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f == q
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)
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)
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self._assert_traversal(
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expr,
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[
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(operators.eq, a, q),
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(operators.eq, a, e),
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(operators.eq, a, f),
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(operators.eq, b, q),
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(operators.eq, b, e),
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(operators.eq, b, f),
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(operators.eq, j, r),
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(operators.eq, f, q),
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]
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)
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def test_subquery(self):
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a, b, c = column("a"), column("b"), column("c")
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subq = select([c]).where(c == a).as_scalar()
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expr = and_(a == b, b == subq)
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self._assert_traversal(
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expr,
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[
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(operators.eq, a, b),
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(operators.eq, b, subq),
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]
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)
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class ClauseTest(fixtures.TestBase, AssertsCompiledSQL):
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"""test copy-in-place behavior of various ClauseElements."""
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__dialect__ = 'default'
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@classmethod
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def setup_class(cls):
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global t1, t2, t3
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t1 = table("table1",
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column("col1"),
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column("col2"),
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column("col3"),
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)
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t2 = table("table2",
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column("col1"),
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column("col2"),
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column("col3"),
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)
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t3 = Table('table3', MetaData(),
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Column('col1', Integer),
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Column('col2', Integer)
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)
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def test_binary(self):
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clause = t1.c.col2 == t2.c.col2
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eq_(str(clause), str(CloningVisitor().traverse(clause)))
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def test_binary_anon_label_quirk(self):
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t = table('t1', column('col1'))
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f = t.c.col1 * 5
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self.assert_compile(select([f]),
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"SELECT t1.col1 * :col1_1 AS anon_1 FROM t1")
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f.anon_label
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a = t.alias()
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f = sql_util.ClauseAdapter(a).traverse(f)
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self.assert_compile(select([f]),
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"SELECT t1_1.col1 * :col1_1 AS anon_1 FROM t1 AS t1_1")
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def test_join(self):
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clause = t1.join(t2, t1.c.col2==t2.c.col2)
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c1 = str(clause)
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assert str(clause) == str(CloningVisitor().traverse(clause))
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class Vis(CloningVisitor):
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def visit_binary(self, binary):
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binary.right = t2.c.col3
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clause2 = Vis().traverse(clause)
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assert c1 == str(clause)
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assert str(clause2) == str(t1.join(t2, t1.c.col2==t2.c.col3))
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def test_aliased_column_adapt(self):
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clause = t1.select()
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aliased = t1.select().alias()
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aliased2 = t1.alias()
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adapter = sql_util.ColumnAdapter(aliased)
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f = select([
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adapter.columns[c]
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for c in aliased2.c
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]).select_from(aliased)
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s = select([aliased2]).select_from(aliased)
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eq_(str(s), str(f))
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f = select([
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adapter.columns[func.count(aliased2.c.col1)]
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]).select_from(aliased)
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eq_(
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str(select([func.count(aliased2.c.col1)]).select_from(aliased)),
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str(f)
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)
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def test_aliased_cloned_column_adapt_inner(self):
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clause = select([t1.c.col1, func.foo(t1.c.col2).label('foo')])
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aliased1 = select([clause.c.col1, clause.c.foo])
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aliased2 = clause
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aliased2.c.col1, aliased2.c.foo
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aliased3 = cloned_traverse(aliased2, {}, {})
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# fixed by [ticket:2419]. the inside columns
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# on aliased3 have _is_clone_of pointers to those of
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# aliased2. corresponding_column checks these
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# now.
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adapter = sql_util.ColumnAdapter(aliased1)
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f1 = select([
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adapter.columns[c]
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for c in aliased2._raw_columns
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])
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f2 = select([
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adapter.columns[c]
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for c in aliased3._raw_columns
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])
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eq_(
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str(f1), str(f2)
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)
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def test_aliased_cloned_column_adapt_exported(self):
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clause = select([t1.c.col1, func.foo(t1.c.col2).label('foo')])
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aliased1 = select([clause.c.col1, clause.c.foo])
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aliased2 = clause
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aliased2.c.col1, aliased2.c.foo
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aliased3 = cloned_traverse(aliased2, {}, {})
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# also fixed by [ticket:2419]. When we look at the
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# *outside* columns of aliased3, they previously did not
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# have an _is_clone_of pointer. But we now modified _make_proxy
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# to assign this.
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adapter = sql_util.ColumnAdapter(aliased1)
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f1 = select([
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adapter.columns[c]
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for c in aliased2.c
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])
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f2 = select([
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adapter.columns[c]
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for c in aliased3.c
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])
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eq_(
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str(f1), str(f2)
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)
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def test_aliased_cloned_schema_column_adapt_exported(self):
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clause = select([t3.c.col1, func.foo(t3.c.col2).label('foo')])
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aliased1 = select([clause.c.col1, clause.c.foo])
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aliased2 = clause
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aliased2.c.col1, aliased2.c.foo
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aliased3 = cloned_traverse(aliased2, {}, {})
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# also fixed by [ticket:2419]. When we look at the
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# *outside* columns of aliased3, they previously did not
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# have an _is_clone_of pointer. But we now modified _make_proxy
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# to assign this.
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adapter = sql_util.ColumnAdapter(aliased1)
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f1 = select([
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adapter.columns[c]
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for c in aliased2.c
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])
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f2 = select([
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adapter.columns[c]
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for c in aliased3.c
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])
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eq_(
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str(f1), str(f2)
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)
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def test_text(self):
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clause = text(
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"select * from table where foo=:bar",
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bindparams=[bindparam('bar')])
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c1 = str(clause)
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class Vis(CloningVisitor):
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def visit_textclause(self, text):
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text.text = text.text + " SOME MODIFIER=:lala"
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text.bindparams['lala'] = bindparam('lala')
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clause2 = Vis().traverse(clause)
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assert c1 == str(clause)
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assert str(clause2) == c1 + " SOME MODIFIER=:lala"
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assert clause.bindparams.keys() == ['bar']
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assert set(clause2.bindparams.keys()) == set(['bar', 'lala'])
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def test_select(self):
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s2 = select([t1])
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s2_assert = str(s2)
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s3_assert = str(select([t1], t1.c.col2==7))
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class Vis(CloningVisitor):
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def visit_select(self, select):
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select.append_whereclause(t1.c.col2==7)
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s3 = Vis().traverse(s2)
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assert str(s3) == s3_assert
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assert str(s2) == s2_assert
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print str(s2)
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print str(s3)
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class Vis(ClauseVisitor):
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def visit_select(self, select):
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select.append_whereclause(t1.c.col2==7)
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Vis().traverse(s2)
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assert str(s2) == s3_assert
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print "------------------"
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s4_assert = str(select([t1], and_(t1.c.col2==7, t1.c.col3==9)))
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class Vis(CloningVisitor):
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def visit_select(self, select):
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select.append_whereclause(t1.c.col3==9)
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s4 = Vis().traverse(s3)
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print str(s3)
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print str(s4)
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assert str(s4) == s4_assert
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assert str(s3) == s3_assert
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print "------------------"
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s5_assert = str(select([t1], and_(t1.c.col2==7, t1.c.col1==9)))
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class Vis(CloningVisitor):
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def visit_binary(self, binary):
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if binary.left is t1.c.col3:
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binary.left = t1.c.col1
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binary.right = bindparam("col1", unique=True)
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s5 = Vis().traverse(s4)
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print str(s4)
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print str(s5)
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assert str(s5) == s5_assert
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assert str(s4) == s4_assert
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def test_union(self):
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u = union(t1.select(), t2.select())
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u2 = CloningVisitor().traverse(u)
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assert str(u) == str(u2)
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assert [str(c) for c in u2.c] == [str(c) for c in u.c]
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u = union(t1.select(), t2.select())
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cols = [str(c) for c in u.c]
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u2 = CloningVisitor().traverse(u)
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assert str(u) == str(u2)
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assert [str(c) for c in u2.c] == cols
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s1 = select([t1], t1.c.col1 == bindparam('id_param'))
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s2 = select([t2])
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u = union(s1, s2)
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u2 = u.params(id_param=7)
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u3 = u.params(id_param=10)
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assert str(u) == str(u2) == str(u3)
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assert u2.compile().params == {'id_param':7}
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assert u3.compile().params == {'id_param':10}
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def test_in(self):
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expr = t1.c.col1.in_(['foo', 'bar'])
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expr2 = CloningVisitor().traverse(expr)
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assert str(expr) == str(expr2)
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|
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def test_over(self):
|
|
expr = func.row_number().over(order_by=t1.c.col1)
|
|
expr2 = CloningVisitor().traverse(expr)
|
|
assert str(expr) == str(expr2)
|
|
|
|
def test_adapt_union(self):
|
|
u = union(
|
|
t1.select().where(t1.c.col1==4),
|
|
t1.select().where(t1.c.col1==5)
|
|
).alias()
|
|
|
|
assert sql_util.ClauseAdapter(u).traverse(t1) is u
|
|
|
|
def test_binds(self):
|
|
"""test that unique bindparams change their name upon clone()
|
|
to prevent conflicts"""
|
|
|
|
s = select([t1], t1.c.col1==bindparam(None, unique=True)).alias()
|
|
s2 = CloningVisitor().traverse(s).alias()
|
|
s3 = select([s], s.c.col2==s2.c.col2)
|
|
|
|
self.assert_compile(s3,
|
|
"SELECT anon_1.col1, anon_1.col2, anon_1.col3 FROM "
|
|
"(SELECT table1.col1 AS col1, table1.col2 AS col2, "
|
|
"table1.col3 AS col3 FROM table1 WHERE table1.col1 = :param_1) "
|
|
"AS anon_1, "
|
|
"(SELECT table1.col1 AS col1, table1.col2 AS col2, table1.col3 "
|
|
"AS col3 FROM table1 WHERE table1.col1 = :param_2) AS anon_2 "
|
|
"WHERE anon_1.col2 = anon_2.col2")
|
|
|
|
s = select([t1], t1.c.col1==4).alias()
|
|
s2 = CloningVisitor().traverse(s).alias()
|
|
s3 = select([s], s.c.col2==s2.c.col2)
|
|
self.assert_compile(s3,
|
|
"SELECT anon_1.col1, anon_1.col2, anon_1.col3 FROM "
|
|
"(SELECT table1.col1 AS col1, table1.col2 AS col2, "
|
|
"table1.col3 AS col3 FROM table1 WHERE table1.col1 = :col1_1) "
|
|
"AS anon_1, "
|
|
"(SELECT table1.col1 AS col1, table1.col2 AS col2, table1.col3 "
|
|
"AS col3 FROM table1 WHERE table1.col1 = :col1_2) AS anon_2 "
|
|
"WHERE anon_1.col2 = anon_2.col2")
|
|
|
|
def test_extract(self):
|
|
s = select([extract('foo', t1.c.col1).label('col1')])
|
|
self.assert_compile(s,
|
|
"SELECT EXTRACT(foo FROM table1.col1) AS col1 FROM table1")
|
|
|
|
s2 = CloningVisitor().traverse(s).alias()
|
|
s3 = select([s2.c.col1])
|
|
self.assert_compile(s,
|
|
"SELECT EXTRACT(foo FROM table1.col1) AS col1 FROM table1")
|
|
self.assert_compile(s3,
|
|
"SELECT anon_1.col1 FROM (SELECT EXTRACT(foo FROM "
|
|
"table1.col1) AS col1 FROM table1) AS anon_1")
|
|
|
|
|
|
@testing.emits_warning('.*replaced by another column with the same key')
|
|
def test_alias(self):
|
|
subq = t2.select().alias('subq')
|
|
s = select([t1.c.col1, subq.c.col1],
|
|
from_obj=[t1, subq,
|
|
t1.join(subq, t1.c.col1==subq.c.col2)]
|
|
)
|
|
orig = str(s)
|
|
s2 = CloningVisitor().traverse(s)
|
|
assert orig == str(s) == str(s2)
|
|
|
|
s4 = CloningVisitor().traverse(s2)
|
|
assert orig == str(s) == str(s2) == str(s4)
|
|
|
|
s3 = sql_util.ClauseAdapter(table('foo')).traverse(s)
|
|
assert orig == str(s) == str(s3)
|
|
|
|
s4 = sql_util.ClauseAdapter(table('foo')).traverse(s3)
|
|
assert orig == str(s) == str(s3) == str(s4)
|
|
|
|
subq = subq.alias('subq')
|
|
s = select([t1.c.col1, subq.c.col1],
|
|
from_obj=[t1, subq,
|
|
t1.join(subq, t1.c.col1==subq.c.col2)]
|
|
)
|
|
s5 = CloningVisitor().traverse(s)
|
|
assert orig == str(s) == str(s5)
|
|
|
|
def test_correlated_select(self):
|
|
s = select(['*'], t1.c.col1==t2.c.col1,
|
|
from_obj=[t1, t2]).correlate(t2)
|
|
class Vis(CloningVisitor):
|
|
def visit_select(self, select):
|
|
select.append_whereclause(t1.c.col2==7)
|
|
|
|
self.assert_compile(Vis().traverse(s),
|
|
"SELECT * FROM table1 WHERE table1.col1 = table2.col1 "
|
|
"AND table1.col2 = :col2_1")
|
|
|
|
def test_this_thing(self):
|
|
s = select([t1]).where(t1.c.col1=='foo').alias()
|
|
s2 = select([s.c.col1])
|
|
|
|
self.assert_compile(s2,
|
|
'SELECT anon_1.col1 FROM (SELECT '
|
|
'table1.col1 AS col1, table1.col2 AS col2, '
|
|
'table1.col3 AS col3 FROM table1 WHERE '
|
|
'table1.col1 = :col1_1) AS anon_1')
|
|
t1a = t1.alias()
|
|
s2 = sql_util.ClauseAdapter(t1a).traverse(s2)
|
|
self.assert_compile(s2,
|
|
'SELECT anon_1.col1 FROM (SELECT '
|
|
'table1_1.col1 AS col1, table1_1.col2 AS '
|
|
'col2, table1_1.col3 AS col3 FROM table1 '
|
|
'AS table1_1 WHERE table1_1.col1 = '
|
|
':col1_1) AS anon_1')
|
|
|
|
def test_select_fromtwice(self):
|
|
t1a = t1.alias()
|
|
|
|
s = select([1], t1.c.col1==t1a.c.col1, from_obj=t1a).correlate(t1)
|
|
self.assert_compile(s,
|
|
'SELECT 1 FROM table1 AS table1_1 WHERE '
|
|
'table1.col1 = table1_1.col1')
|
|
|
|
s = CloningVisitor().traverse(s)
|
|
self.assert_compile(s,
|
|
'SELECT 1 FROM table1 AS table1_1 WHERE '
|
|
'table1.col1 = table1_1.col1')
|
|
|
|
s = select([t1]).where(t1.c.col1=='foo').alias()
|
|
|
|
s2 = select([1], t1.c.col1==s.c.col1, from_obj=s).correlate(t1)
|
|
self.assert_compile(s2,
|
|
'SELECT 1 FROM (SELECT table1.col1 AS '
|
|
'col1, table1.col2 AS col2, table1.col3 AS '
|
|
'col3 FROM table1 WHERE table1.col1 = '
|
|
':col1_1) AS anon_1 WHERE table1.col1 = '
|
|
'anon_1.col1')
|
|
s2 = ReplacingCloningVisitor().traverse(s2)
|
|
self.assert_compile(s2,
|
|
'SELECT 1 FROM (SELECT table1.col1 AS '
|
|
'col1, table1.col2 AS col2, table1.col3 AS '
|
|
'col3 FROM table1 WHERE table1.col1 = '
|
|
':col1_1) AS anon_1 WHERE table1.col1 = '
|
|
'anon_1.col1')
|
|
|
|
class ClauseAdapterTest(fixtures.TestBase, AssertsCompiledSQL):
|
|
__dialect__ = 'default'
|
|
|
|
@classmethod
|
|
def setup_class(cls):
|
|
global t1, t2
|
|
t1 = table("table1",
|
|
column("col1"),
|
|
column("col2"),
|
|
column("col3"),
|
|
)
|
|
t2 = table("table2",
|
|
column("col1"),
|
|
column("col2"),
|
|
column("col3"),
|
|
)
|
|
|
|
def test_correlation_on_clone(self):
|
|
t1alias = t1.alias('t1alias')
|
|
t2alias = t2.alias('t2alias')
|
|
vis = sql_util.ClauseAdapter(t1alias)
|
|
|
|
s = select(['*'], from_obj=[t1alias, t2alias]).as_scalar()
|
|
assert t2alias in s._froms
|
|
assert t1alias in s._froms
|
|
|
|
self.assert_compile(select(['*'], t2alias.c.col1 == s),
|
|
'SELECT * FROM table2 AS t2alias WHERE '
|
|
't2alias.col1 = (SELECT * FROM table1 AS '
|
|
't1alias)')
|
|
s = vis.traverse(s)
|
|
|
|
assert t2alias not in s._froms # not present because it's been
|
|
# cloned
|
|
assert t1alias in s._froms # present because the adapter placed
|
|
# it there
|
|
|
|
# correlate list on "s" needs to take into account the full
|
|
# _cloned_set for each element in _froms when correlating
|
|
|
|
self.assert_compile(select(['*'], t2alias.c.col1 == s),
|
|
'SELECT * FROM table2 AS t2alias WHERE '
|
|
't2alias.col1 = (SELECT * FROM table1 AS '
|
|
't1alias)')
|
|
s = select(['*'], from_obj=[t1alias,
|
|
t2alias]).correlate(t2alias).as_scalar()
|
|
self.assert_compile(select(['*'], t2alias.c.col1 == s),
|
|
'SELECT * FROM table2 AS t2alias WHERE '
|
|
't2alias.col1 = (SELECT * FROM table1 AS '
|
|
't1alias)')
|
|
s = vis.traverse(s)
|
|
self.assert_compile(select(['*'], t2alias.c.col1 == s),
|
|
'SELECT * FROM table2 AS t2alias WHERE '
|
|
't2alias.col1 = (SELECT * FROM table1 AS '
|
|
't1alias)')
|
|
s = CloningVisitor().traverse(s)
|
|
self.assert_compile(select(['*'], t2alias.c.col1 == s),
|
|
'SELECT * FROM table2 AS t2alias WHERE '
|
|
't2alias.col1 = (SELECT * FROM table1 AS '
|
|
't1alias)')
|
|
|
|
s = select(['*']).where(t1.c.col1 == t2.c.col1).as_scalar()
|
|
self.assert_compile(select([t1.c.col1, s]),
|
|
'SELECT table1.col1, (SELECT * FROM table2 '
|
|
'WHERE table1.col1 = table2.col1) AS '
|
|
'anon_1 FROM table1')
|
|
vis = sql_util.ClauseAdapter(t1alias)
|
|
s = vis.traverse(s)
|
|
self.assert_compile(select([t1alias.c.col1, s]),
|
|
'SELECT t1alias.col1, (SELECT * FROM '
|
|
'table2 WHERE t1alias.col1 = table2.col1) '
|
|
'AS anon_1 FROM table1 AS t1alias')
|
|
s = CloningVisitor().traverse(s)
|
|
self.assert_compile(select([t1alias.c.col1, s]),
|
|
'SELECT t1alias.col1, (SELECT * FROM '
|
|
'table2 WHERE t1alias.col1 = table2.col1) '
|
|
'AS anon_1 FROM table1 AS t1alias')
|
|
s = select(['*']).where(t1.c.col1
|
|
== t2.c.col1).correlate(t1).as_scalar()
|
|
self.assert_compile(select([t1.c.col1, s]),
|
|
'SELECT table1.col1, (SELECT * FROM table2 '
|
|
'WHERE table1.col1 = table2.col1) AS '
|
|
'anon_1 FROM table1')
|
|
vis = sql_util.ClauseAdapter(t1alias)
|
|
s = vis.traverse(s)
|
|
self.assert_compile(select([t1alias.c.col1, s]),
|
|
'SELECT t1alias.col1, (SELECT * FROM '
|
|
'table2 WHERE t1alias.col1 = table2.col1) '
|
|
'AS anon_1 FROM table1 AS t1alias')
|
|
s = CloningVisitor().traverse(s)
|
|
self.assert_compile(select([t1alias.c.col1, s]),
|
|
'SELECT t1alias.col1, (SELECT * FROM '
|
|
'table2 WHERE t1alias.col1 = table2.col1) '
|
|
'AS anon_1 FROM table1 AS t1alias')
|
|
|
|
@testing.fails_on_everything_except()
|
|
def test_joins_dont_adapt(self):
|
|
# adapting to a join, i.e. ClauseAdapter(t1.join(t2)), doesn't
|
|
# make much sense. ClauseAdapter doesn't make any changes if
|
|
# it's against a straight join.
|
|
|
|
users = table('users', column('id'))
|
|
addresses = table('addresses', column('id'), column('user_id'))
|
|
|
|
ualias = users.alias()
|
|
|
|
s = select([func.count(addresses.c.id)], users.c.id
|
|
== addresses.c.user_id).correlate(users)
|
|
s = sql_util.ClauseAdapter(ualias).traverse(s)
|
|
|
|
j1 = addresses.join(ualias, addresses.c.user_id==ualias.c.id)
|
|
|
|
self.assert_compile(sql_util.ClauseAdapter(j1).traverse(s),
|
|
'SELECT count(addresses.id) AS count_1 '
|
|
'FROM addresses WHERE users_1.id = '
|
|
'addresses.user_id')
|
|
|
|
def test_table_to_alias(self):
|
|
|
|
t1alias = t1.alias('t1alias')
|
|
|
|
vis = sql_util.ClauseAdapter(t1alias)
|
|
ff = vis.traverse(func.count(t1.c.col1).label('foo'))
|
|
assert list(_from_objects(ff)) == [t1alias]
|
|
|
|
self.assert_compile(vis.traverse(select(['*'], from_obj=[t1])),
|
|
'SELECT * FROM table1 AS t1alias')
|
|
self.assert_compile(select(['*'], t1.c.col1 == t2.c.col2),
|
|
'SELECT * FROM table1, table2 WHERE '
|
|
'table1.col1 = table2.col2')
|
|
self.assert_compile(vis.traverse(select(['*'], t1.c.col1
|
|
== t2.c.col2)),
|
|
'SELECT * FROM table1 AS t1alias, table2 '
|
|
'WHERE t1alias.col1 = table2.col2')
|
|
self.assert_compile(vis.traverse(select(['*'], t1.c.col1
|
|
== t2.c.col2, from_obj=[t1, t2])),
|
|
'SELECT * FROM table1 AS t1alias, table2 '
|
|
'WHERE t1alias.col1 = table2.col2')
|
|
self.assert_compile(vis.traverse(select(['*'], t1.c.col1
|
|
== t2.c.col2, from_obj=[t1,
|
|
t2]).correlate(t1)),
|
|
'SELECT * FROM table2 WHERE t1alias.col1 = '
|
|
'table2.col2')
|
|
self.assert_compile(vis.traverse(select(['*'], t1.c.col1
|
|
== t2.c.col2, from_obj=[t1,
|
|
t2]).correlate(t2)),
|
|
'SELECT * FROM table1 AS t1alias WHERE '
|
|
't1alias.col1 = table2.col2')
|
|
self.assert_compile(vis.traverse(case([(t1.c.col1 == 5,
|
|
t1.c.col2)], else_=t1.c.col1)),
|
|
'CASE WHEN (t1alias.col1 = :col1_1) THEN '
|
|
't1alias.col2 ELSE t1alias.col1 END')
|
|
self.assert_compile(vis.traverse(case([(5, t1.c.col2)],
|
|
value=t1.c.col1, else_=t1.c.col1)),
|
|
'CASE t1alias.col1 WHEN :param_1 THEN '
|
|
't1alias.col2 ELSE t1alias.col1 END')
|
|
|
|
|
|
s = select(['*'], from_obj=[t1]).alias('foo')
|
|
self.assert_compile(s.select(),
|
|
'SELECT foo.* FROM (SELECT * FROM table1) '
|
|
'AS foo')
|
|
self.assert_compile(vis.traverse(s.select()),
|
|
'SELECT foo.* FROM (SELECT * FROM table1 '
|
|
'AS t1alias) AS foo')
|
|
self.assert_compile(s.select(),
|
|
'SELECT foo.* FROM (SELECT * FROM table1) '
|
|
'AS foo')
|
|
ff = vis.traverse(func.count(t1.c.col1).label('foo'))
|
|
self.assert_compile(select([ff]),
|
|
'SELECT count(t1alias.col1) AS foo FROM '
|
|
'table1 AS t1alias')
|
|
assert list(_from_objects(ff)) == [t1alias]
|
|
|
|
# TODO: self.assert_compile(vis.traverse(select([func.count(t1.c
|
|
# .col1).l abel('foo')]), clone=True), "SELECT
|
|
# count(t1alias.col1) AS foo FROM table1 AS t1alias")
|
|
|
|
t2alias = t2.alias('t2alias')
|
|
vis.chain(sql_util.ClauseAdapter(t2alias))
|
|
self.assert_compile(vis.traverse(select(['*'], t1.c.col1
|
|
== t2.c.col2)),
|
|
'SELECT * FROM table1 AS t1alias, table2 '
|
|
'AS t2alias WHERE t1alias.col1 = '
|
|
't2alias.col2')
|
|
self.assert_compile(vis.traverse(select(['*'], t1.c.col1
|
|
== t2.c.col2, from_obj=[t1, t2])),
|
|
'SELECT * FROM table1 AS t1alias, table2 '
|
|
'AS t2alias WHERE t1alias.col1 = '
|
|
't2alias.col2')
|
|
self.assert_compile(vis.traverse(select(['*'], t1.c.col1
|
|
== t2.c.col2, from_obj=[t1,
|
|
t2]).correlate(t1)),
|
|
'SELECT * FROM table2 AS t2alias WHERE '
|
|
't1alias.col1 = t2alias.col2')
|
|
self.assert_compile(vis.traverse(select(['*'], t1.c.col1
|
|
== t2.c.col2, from_obj=[t1,
|
|
t2]).correlate(t2)),
|
|
'SELECT * FROM table1 AS t1alias WHERE '
|
|
't1alias.col1 = t2alias.col2')
|
|
|
|
def test_include_exclude(self):
|
|
m = MetaData()
|
|
a=Table( 'a',m,
|
|
Column( 'id', Integer, primary_key=True),
|
|
Column( 'xxx_id', Integer,
|
|
ForeignKey( 'a.id', name='adf',use_alter=True )
|
|
)
|
|
)
|
|
|
|
e = (a.c.id == a.c.xxx_id)
|
|
assert str(e) == "a.id = a.xxx_id"
|
|
b = a.alias()
|
|
|
|
e = sql_util.ClauseAdapter( b, include= set([ a.c.id ]),
|
|
equivalents= { a.c.id: set([ a.c.id]) }
|
|
).traverse( e)
|
|
|
|
assert str(e) == "a_1.id = a.xxx_id"
|
|
|
|
def test_recursive_equivalents(self):
|
|
m = MetaData()
|
|
a = Table('a', m, Column('x', Integer), Column('y', Integer))
|
|
b = Table('b', m, Column('x', Integer), Column('y', Integer))
|
|
c = Table('c', m, Column('x', Integer), Column('y', Integer))
|
|
|
|
# force a recursion overflow, by linking a.c.x<->c.c.x, and
|
|
# asking for a nonexistent col. corresponding_column should prevent
|
|
# endless depth.
|
|
adapt = sql_util.ClauseAdapter(b,
|
|
equivalents={a.c.x: set([c.c.x]), c.c.x: set([a.c.x])})
|
|
assert adapt._corresponding_column(a.c.x, False) is None
|
|
|
|
def test_multilevel_equivalents(self):
|
|
m = MetaData()
|
|
a = Table('a', m, Column('x', Integer), Column('y', Integer))
|
|
b = Table('b', m, Column('x', Integer), Column('y', Integer))
|
|
c = Table('c', m, Column('x', Integer), Column('y', Integer))
|
|
|
|
alias = select([a]).select_from(a.join(b, a.c.x==b.c.x)).alias()
|
|
|
|
# two levels of indirection from c.x->b.x->a.x, requires recursive
|
|
# corresponding_column call
|
|
adapt = sql_util.ClauseAdapter(alias,
|
|
equivalents={b.c.x: set([a.c.x]), c.c.x: set([b.c.x])})
|
|
assert adapt._corresponding_column(a.c.x, False) is alias.c.x
|
|
assert adapt._corresponding_column(c.c.x, False) is alias.c.x
|
|
|
|
def test_join_to_alias(self):
|
|
metadata = MetaData()
|
|
a = Table('a', metadata,
|
|
Column('id', Integer, primary_key=True))
|
|
b = Table('b', metadata,
|
|
Column('id', Integer, primary_key=True),
|
|
Column('aid', Integer, ForeignKey('a.id')),
|
|
)
|
|
c = Table('c', metadata,
|
|
Column('id', Integer, primary_key=True),
|
|
Column('bid', Integer, ForeignKey('b.id')),
|
|
)
|
|
|
|
d = Table('d', metadata,
|
|
Column('id', Integer, primary_key=True),
|
|
Column('aid', Integer, ForeignKey('a.id')),
|
|
)
|
|
|
|
j1 = a.outerjoin(b)
|
|
j2 = select([j1], use_labels=True)
|
|
|
|
j3 = c.join(j2, j2.c.b_id==c.c.bid)
|
|
|
|
j4 = j3.outerjoin(d)
|
|
self.assert_compile(j4,
|
|
'c JOIN (SELECT a.id AS a_id, b.id AS '
|
|
'b_id, b.aid AS b_aid FROM a LEFT OUTER '
|
|
'JOIN b ON a.id = b.aid) ON b_id = c.bid '
|
|
'LEFT OUTER JOIN d ON a_id = d.aid')
|
|
j5 = j3.alias('foo')
|
|
j6 = sql_util.ClauseAdapter(j5).copy_and_process([j4])[0]
|
|
|
|
# this statement takes c join(a join b), wraps it inside an
|
|
# aliased "select * from c join(a join b) AS foo". the outermost
|
|
# right side "left outer join d" stays the same, except "d"
|
|
# joins against foo.a_id instead of plain "a_id"
|
|
|
|
self.assert_compile(j6,
|
|
'(SELECT c.id AS c_id, c.bid AS c_bid, '
|
|
'a_id AS a_id, b_id AS b_id, b_aid AS '
|
|
'b_aid FROM c JOIN (SELECT a.id AS a_id, '
|
|
'b.id AS b_id, b.aid AS b_aid FROM a LEFT '
|
|
'OUTER JOIN b ON a.id = b.aid) ON b_id = '
|
|
'c.bid) AS foo LEFT OUTER JOIN d ON '
|
|
'foo.a_id = d.aid')
|
|
|
|
def test_derived_from(self):
|
|
assert select([t1]).is_derived_from(t1)
|
|
assert not select([t2]).is_derived_from(t1)
|
|
assert not t1.is_derived_from(select([t1]))
|
|
assert t1.alias().is_derived_from(t1)
|
|
|
|
|
|
s1 = select([t1, t2]).alias('foo')
|
|
s2 = select([s1]).limit(5).offset(10).alias()
|
|
assert s2.is_derived_from(s1)
|
|
s2 = s2._clone()
|
|
assert s2.is_derived_from(s1)
|
|
|
|
def test_aliasedselect_to_aliasedselect_straight(self):
|
|
|
|
# original issue from ticket #904
|
|
|
|
s1 = select([t1]).alias('foo')
|
|
s2 = select([s1]).limit(5).offset(10).alias()
|
|
self.assert_compile(sql_util.ClauseAdapter(s2).traverse(s1),
|
|
'SELECT foo.col1, foo.col2, foo.col3 FROM '
|
|
'(SELECT table1.col1 AS col1, table1.col2 '
|
|
'AS col2, table1.col3 AS col3 FROM table1) '
|
|
'AS foo LIMIT :param_1 OFFSET :param_2',
|
|
{'param_1': 5, 'param_2': 10})
|
|
|
|
def test_aliasedselect_to_aliasedselect_join(self):
|
|
s1 = select([t1]).alias('foo')
|
|
s2 = select([s1]).limit(5).offset(10).alias()
|
|
j = s1.outerjoin(t2, s1.c.col1 == t2.c.col1)
|
|
self.assert_compile(sql_util.ClauseAdapter(s2).traverse(j).select(),
|
|
'SELECT anon_1.col1, anon_1.col2, '
|
|
'anon_1.col3, table2.col1, table2.col2, '
|
|
'table2.col3 FROM (SELECT foo.col1 AS '
|
|
'col1, foo.col2 AS col2, foo.col3 AS col3 '
|
|
'FROM (SELECT table1.col1 AS col1, '
|
|
'table1.col2 AS col2, table1.col3 AS col3 '
|
|
'FROM table1) AS foo LIMIT :param_1 OFFSET '
|
|
':param_2) AS anon_1 LEFT OUTER JOIN '
|
|
'table2 ON anon_1.col1 = table2.col1',
|
|
{'param_1': 5, 'param_2': 10})
|
|
|
|
def test_aliasedselect_to_aliasedselect_join_nested_table(self):
|
|
s1 = select([t1]).alias('foo')
|
|
s2 = select([s1]).limit(5).offset(10).alias()
|
|
talias = t1.alias('bar')
|
|
|
|
assert not s2.is_derived_from(talias)
|
|
j = s1.outerjoin(talias, s1.c.col1 == talias.c.col1)
|
|
|
|
self.assert_compile(sql_util.ClauseAdapter(s2).traverse(j).select(),
|
|
'SELECT anon_1.col1, anon_1.col2, '
|
|
'anon_1.col3, bar.col1, bar.col2, bar.col3 '
|
|
'FROM (SELECT foo.col1 AS col1, foo.col2 '
|
|
'AS col2, foo.col3 AS col3 FROM (SELECT '
|
|
'table1.col1 AS col1, table1.col2 AS col2, '
|
|
'table1.col3 AS col3 FROM table1) AS foo '
|
|
'LIMIT :param_1 OFFSET :param_2) AS anon_1 '
|
|
'LEFT OUTER JOIN table1 AS bar ON '
|
|
'anon_1.col1 = bar.col1', {'param_1': 5,
|
|
'param_2': 10})
|
|
|
|
def test_functions(self):
|
|
self.assert_compile(
|
|
sql_util.ClauseAdapter(t1.alias()).\
|
|
traverse(func.count(t1.c.col1)),
|
|
'count(table1_1.col1)')
|
|
s = select([func.count(t1.c.col1)])
|
|
self.assert_compile(sql_util.ClauseAdapter(t1.alias()).traverse(s),
|
|
'SELECT count(table1_1.col1) AS count_1 '
|
|
'FROM table1 AS table1_1')
|
|
|
|
def test_recursive(self):
|
|
metadata = MetaData()
|
|
a = Table('a', metadata,
|
|
Column('id', Integer, primary_key=True))
|
|
b = Table('b', metadata,
|
|
Column('id', Integer, primary_key=True),
|
|
Column('aid', Integer, ForeignKey('a.id')),
|
|
)
|
|
c = Table('c', metadata,
|
|
Column('id', Integer, primary_key=True),
|
|
Column('bid', Integer, ForeignKey('b.id')),
|
|
)
|
|
|
|
d = Table('d', metadata,
|
|
Column('id', Integer, primary_key=True),
|
|
Column('aid', Integer, ForeignKey('a.id')),
|
|
)
|
|
|
|
u = union(
|
|
a.join(b).select().apply_labels(),
|
|
a.join(d).select().apply_labels()
|
|
).alias()
|
|
|
|
self.assert_compile(
|
|
sql_util.ClauseAdapter(u).\
|
|
traverse(select([c.c.bid]).where(c.c.bid==u.c.b_aid)),
|
|
"SELECT c.bid "\
|
|
"FROM c, (SELECT a.id AS a_id, b.id AS b_id, b.aid AS b_aid "
|
|
"FROM a JOIN b ON a.id = b.aid UNION SELECT a.id AS a_id, d.id "
|
|
"AS d_id, d.aid AS d_aid "
|
|
"FROM a JOIN d ON a.id = d.aid) AS anon_1 "
|
|
"WHERE c.bid = anon_1.b_aid"
|
|
)
|
|
|
|
class SpliceJoinsTest(fixtures.TestBase, AssertsCompiledSQL):
|
|
__dialect__ = 'default'
|
|
|
|
@classmethod
|
|
def setup_class(cls):
|
|
global table1, table2, table3, table4
|
|
|
|
def _table(name):
|
|
return table(name, column('col1'), column('col2'),
|
|
column('col3'))
|
|
|
|
table1, table2, table3, table4 = [_table(name) for name in
|
|
('table1', 'table2', 'table3', 'table4')]
|
|
|
|
def test_splice(self):
|
|
t1, t2, t3, t4 = table1, table2, table1.alias(), table2.alias()
|
|
j = t1.join(t2, t1.c.col1 == t2.c.col1).join(t3, t2.c.col1
|
|
== t3.c.col1).join(t4, t4.c.col1 == t1.c.col1)
|
|
s = select([t1]).where(t1.c.col2 < 5).alias()
|
|
self.assert_compile(sql_util.splice_joins(s, j),
|
|
'(SELECT table1.col1 AS col1, table1.col2 '
|
|
'AS col2, table1.col3 AS col3 FROM table1 '
|
|
'WHERE table1.col2 < :col2_1) AS anon_1 '
|
|
'JOIN table2 ON anon_1.col1 = table2.col1 '
|
|
'JOIN table1 AS table1_1 ON table2.col1 = '
|
|
'table1_1.col1 JOIN table2 AS table2_1 ON '
|
|
'table2_1.col1 = anon_1.col1')
|
|
|
|
def test_stop_on(self):
|
|
t1, t2, t3 = table1, table2, table3
|
|
j1 = t1.join(t2, t1.c.col1 == t2.c.col1)
|
|
j2 = j1.join(t3, t2.c.col1 == t3.c.col1)
|
|
s = select([t1]).select_from(j1).alias()
|
|
self.assert_compile(sql_util.splice_joins(s, j2),
|
|
'(SELECT table1.col1 AS col1, table1.col2 '
|
|
'AS col2, table1.col3 AS col3 FROM table1 '
|
|
'JOIN table2 ON table1.col1 = table2.col1) '
|
|
'AS anon_1 JOIN table2 ON anon_1.col1 = '
|
|
'table2.col1 JOIN table3 ON table2.col1 = '
|
|
'table3.col1')
|
|
self.assert_compile(sql_util.splice_joins(s, j2, j1),
|
|
'(SELECT table1.col1 AS col1, table1.col2 '
|
|
'AS col2, table1.col3 AS col3 FROM table1 '
|
|
'JOIN table2 ON table1.col1 = table2.col1) '
|
|
'AS anon_1 JOIN table3 ON table2.col1 = '
|
|
'table3.col1')
|
|
|
|
def test_splice_2(self):
|
|
t2a = table2.alias()
|
|
t3a = table3.alias()
|
|
j1 = table1.join(t2a, table1.c.col1 == t2a.c.col1).join(t3a,
|
|
t2a.c.col2 == t3a.c.col2)
|
|
t2b = table4.alias()
|
|
j2 = table1.join(t2b, table1.c.col3 == t2b.c.col3)
|
|
self.assert_compile(sql_util.splice_joins(table1, j1),
|
|
'table1 JOIN table2 AS table2_1 ON '
|
|
'table1.col1 = table2_1.col1 JOIN table3 '
|
|
'AS table3_1 ON table2_1.col2 = '
|
|
'table3_1.col2')
|
|
self.assert_compile(sql_util.splice_joins(table1, j2),
|
|
'table1 JOIN table4 AS table4_1 ON '
|
|
'table1.col3 = table4_1.col3')
|
|
self.assert_compile(sql_util.splice_joins(sql_util.splice_joins(table1,
|
|
j1), j2),
|
|
'table1 JOIN table2 AS table2_1 ON '
|
|
'table1.col1 = table2_1.col1 JOIN table3 '
|
|
'AS table3_1 ON table2_1.col2 = '
|
|
'table3_1.col2 JOIN table4 AS table4_1 ON '
|
|
'table1.col3 = table4_1.col3')
|
|
|
|
|
|
class SelectTest(fixtures.TestBase, AssertsCompiledSQL):
|
|
"""tests the generative capability of Select"""
|
|
|
|
__dialect__ = 'default'
|
|
|
|
@classmethod
|
|
def setup_class(cls):
|
|
global t1, t2
|
|
t1 = table("table1",
|
|
column("col1"),
|
|
column("col2"),
|
|
column("col3"),
|
|
)
|
|
t2 = table("table2",
|
|
column("col1"),
|
|
column("col2"),
|
|
column("col3"),
|
|
)
|
|
|
|
def test_select(self):
|
|
self.assert_compile(t1.select().where(t1.c.col1
|
|
== 5).order_by(t1.c.col3),
|
|
'SELECT table1.col1, table1.col2, '
|
|
'table1.col3 FROM table1 WHERE table1.col1 '
|
|
'= :col1_1 ORDER BY table1.col3')
|
|
self.assert_compile(t1.select().select_from(select([t2],
|
|
t2.c.col1
|
|
== t1.c.col1)).order_by(t1.c.col3),
|
|
'SELECT table1.col1, table1.col2, '
|
|
'table1.col3 FROM table1, (SELECT '
|
|
'table2.col1 AS col1, table2.col2 AS col2, '
|
|
'table2.col3 AS col3 FROM table2 WHERE '
|
|
'table2.col1 = table1.col1) ORDER BY '
|
|
'table1.col3')
|
|
s = select([t2], t2.c.col1 == t1.c.col1, correlate=False)
|
|
s = s.correlate(t1).order_by(t2.c.col3)
|
|
self.assert_compile(t1.select().select_from(s).order_by(t1.c.col3),
|
|
'SELECT table1.col1, table1.col2, '
|
|
'table1.col3 FROM table1, (SELECT '
|
|
'table2.col1 AS col1, table2.col2 AS col2, '
|
|
'table2.col3 AS col3 FROM table2 WHERE '
|
|
'table2.col1 = table1.col1 ORDER BY '
|
|
'table2.col3) ORDER BY table1.col3')
|
|
|
|
def test_columns(self):
|
|
s = t1.select()
|
|
self.assert_compile(s,
|
|
'SELECT table1.col1, table1.col2, '
|
|
'table1.col3 FROM table1')
|
|
select_copy = s.column('yyy')
|
|
self.assert_compile(select_copy,
|
|
'SELECT table1.col1, table1.col2, '
|
|
'table1.col3, yyy FROM table1')
|
|
assert s.columns is not select_copy.columns
|
|
assert s._columns is not select_copy._columns
|
|
assert s._raw_columns is not select_copy._raw_columns
|
|
self.assert_compile(s,
|
|
'SELECT table1.col1, table1.col2, '
|
|
'table1.col3 FROM table1')
|
|
|
|
def test_froms(self):
|
|
s = t1.select()
|
|
self.assert_compile(s,
|
|
'SELECT table1.col1, table1.col2, '
|
|
'table1.col3 FROM table1')
|
|
select_copy = s.select_from(t2)
|
|
self.assert_compile(select_copy,
|
|
'SELECT table1.col1, table1.col2, '
|
|
'table1.col3 FROM table1, table2')
|
|
assert s._froms is not select_copy._froms
|
|
self.assert_compile(s,
|
|
'SELECT table1.col1, table1.col2, '
|
|
'table1.col3 FROM table1')
|
|
|
|
def test_correlation(self):
|
|
s = select([t2], t1.c.col1 == t2.c.col1)
|
|
self.assert_compile(s,
|
|
'SELECT table2.col1, table2.col2, '
|
|
'table2.col3 FROM table2, table1 WHERE '
|
|
'table1.col1 = table2.col1')
|
|
s2 = select([t1], t1.c.col2 == s.c.col2)
|
|
self.assert_compile(s2,
|
|
'SELECT table1.col1, table1.col2, '
|
|
'table1.col3 FROM table1, (SELECT '
|
|
'table2.col1 AS col1, table2.col2 AS col2, '
|
|
'table2.col3 AS col3 FROM table2 WHERE '
|
|
'table1.col1 = table2.col1) WHERE '
|
|
'table1.col2 = col2')
|
|
s3 = s.correlate(None)
|
|
self.assert_compile(select([t1], t1.c.col2 == s3.c.col2),
|
|
'SELECT table1.col1, table1.col2, '
|
|
'table1.col3 FROM table1, (SELECT '
|
|
'table2.col1 AS col1, table2.col2 AS col2, '
|
|
'table2.col3 AS col3 FROM table2, table1 '
|
|
'WHERE table1.col1 = table2.col1) WHERE '
|
|
'table1.col2 = col2')
|
|
self.assert_compile(select([t1], t1.c.col2 == s.c.col2),
|
|
'SELECT table1.col1, table1.col2, '
|
|
'table1.col3 FROM table1, (SELECT '
|
|
'table2.col1 AS col1, table2.col2 AS col2, '
|
|
'table2.col3 AS col3 FROM table2 WHERE '
|
|
'table1.col1 = table2.col1) WHERE '
|
|
'table1.col2 = col2')
|
|
s4 = s3.correlate(t1)
|
|
self.assert_compile(select([t1], t1.c.col2 == s4.c.col2),
|
|
'SELECT table1.col1, table1.col2, '
|
|
'table1.col3 FROM table1, (SELECT '
|
|
'table2.col1 AS col1, table2.col2 AS col2, '
|
|
'table2.col3 AS col3 FROM table2 WHERE '
|
|
'table1.col1 = table2.col1) WHERE '
|
|
'table1.col2 = col2')
|
|
self.assert_compile(select([t1], t1.c.col2 == s3.c.col2),
|
|
'SELECT table1.col1, table1.col2, '
|
|
'table1.col3 FROM table1, (SELECT '
|
|
'table2.col1 AS col1, table2.col2 AS col2, '
|
|
'table2.col3 AS col3 FROM table2, table1 '
|
|
'WHERE table1.col1 = table2.col1) WHERE '
|
|
'table1.col2 = col2')
|
|
|
|
def test_prefixes(self):
|
|
s = t1.select()
|
|
self.assert_compile(s,
|
|
'SELECT table1.col1, table1.col2, '
|
|
'table1.col3 FROM table1')
|
|
select_copy = s.prefix_with('FOOBER')
|
|
self.assert_compile(select_copy,
|
|
'SELECT FOOBER table1.col1, table1.col2, '
|
|
'table1.col3 FROM table1')
|
|
self.assert_compile(s,
|
|
'SELECT table1.col1, table1.col2, '
|
|
'table1.col3 FROM table1')
|
|
|
|
def test_execution_options(self):
|
|
s = select().execution_options(foo='bar')
|
|
s2 = s.execution_options(bar='baz')
|
|
s3 = s.execution_options(foo='not bar')
|
|
# The original select should not be modified.
|
|
assert s._execution_options == dict(foo='bar')
|
|
# s2 should have its execution_options based on s, though.
|
|
assert s2._execution_options == dict(foo='bar', bar='baz')
|
|
assert s3._execution_options == dict(foo='not bar')
|
|
|
|
def test_invalid_options(self):
|
|
assert_raises(
|
|
exc.ArgumentError,
|
|
select().execution_options, compiled_cache={}
|
|
)
|
|
|
|
assert_raises(
|
|
exc.ArgumentError,
|
|
select().execution_options,
|
|
isolation_level='READ_COMMITTED'
|
|
)
|
|
|
|
# this feature not available yet
|
|
def _NOTYET_test_execution_options_in_kwargs(self):
|
|
s = select(execution_options=dict(foo='bar'))
|
|
s2 = s.execution_options(bar='baz')
|
|
# The original select should not be modified.
|
|
assert s._execution_options == dict(foo='bar')
|
|
# s2 should have its execution_options based on s, though.
|
|
assert s2._execution_options == dict(foo='bar', bar='baz')
|
|
|
|
# this feature not available yet
|
|
def _NOTYET_test_execution_options_in_text(self):
|
|
s = text('select 42', execution_options=dict(foo='bar'))
|
|
assert s._execution_options == dict(foo='bar')
|
|
|
|
class InsertTest(fixtures.TestBase, AssertsCompiledSQL):
|
|
"""Tests the generative capability of Insert"""
|
|
|
|
__dialect__ = 'default'
|
|
|
|
# fixme: consolidate converage from elsewhere here and expand
|
|
|
|
@classmethod
|
|
def setup_class(cls):
|
|
global t1, t2
|
|
t1 = table("table1",
|
|
column("col1"),
|
|
column("col2"),
|
|
column("col3"),
|
|
)
|
|
t2 = table("table2",
|
|
column("col1"),
|
|
column("col2"),
|
|
column("col3"),
|
|
)
|
|
|
|
def test_prefixes(self):
|
|
i = t1.insert()
|
|
self.assert_compile(i,
|
|
"INSERT INTO table1 (col1, col2, col3) "
|
|
"VALUES (:col1, :col2, :col3)")
|
|
|
|
gen = i.prefix_with("foober")
|
|
self.assert_compile(gen,
|
|
"INSERT foober INTO table1 (col1, col2, col3) "
|
|
"VALUES (:col1, :col2, :col3)")
|
|
|
|
self.assert_compile(i,
|
|
"INSERT INTO table1 (col1, col2, col3) "
|
|
"VALUES (:col1, :col2, :col3)")
|
|
|
|
i2 = t1.insert(prefixes=['squiznart'])
|
|
self.assert_compile(i2,
|
|
"INSERT squiznart INTO table1 (col1, col2, col3) "
|
|
"VALUES (:col1, :col2, :col3)")
|
|
|
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gen2 = i2.prefix_with("quux")
|
|
self.assert_compile(gen2,
|
|
"INSERT squiznart quux INTO "
|
|
"table1 (col1, col2, col3) "
|
|
"VALUES (:col1, :col2, :col3)")
|
|
|