def test_operators_precedence(self):
self.assertParseTarget(
"SELECT a AND b OR c AND d;",
qp.Or(qp.And(qp.Column('a'), qp.Column('b')),
qp.And(qp.Column('c'), qp.Column('d'))))
self.assertParseTarget(
"SELECT a = 2 AND b != 3;",
qp.And(qp.Equal(qp.Column('a'), qp.Constant(2)),
qp.Not(qp.Equal(qp.Column('b'), qp.Constant(3)))))
self.assertParseTarget("SELECT not a AND b;",
qp.And(qp.Not(qp.Column('a')), qp.Column('b')))
self.assertParseTarget(
"SELECT a + b AND c - d;",
qp.And(qp.Add(qp.Column('a'), qp.Column('b')),
qp.Sub(qp.Column('c'), qp.Column('d'))))
self.assertParseTarget(
"SELECT a * b + c / d - 3;",
qp.Sub(
qp.Add(qp.Mul(qp.Column(name='a'), qp.Column(name='b')),
qp.Div(qp.Column(name='c'), qp.Column(name='d'))),
qp.Constant(value=3)))
self.assertParseTarget(
"SELECT 'orange' IN tags AND 'bananas' IN tags;",
qp.And(qp.Contains(qp.Constant('orange'), qp.Column('tags')),
qp.Contains(qp.Constant('bananas'), qp.Column('tags'))))
def test_complex_expressions(self):
self.assertParseTarget(
"SELECT a != (b != (42 AND 17));",
qp.Not(
qp.Equal(
qp.Column('a'),
qp.Not(
qp.Equal(qp.Column('b'),
qp.And(qp.Constant(42), qp.Constant(17)))))))
def test_expr_paren_multi2(self):
self.assertParse(
qSelect([
qp.Target(
qp.Not(
qp.Equal(
qp.Column('a'),
qp.Not(
qp.Equal(
qp.Column('b'),
qp.And(qp.Constant(42),
qp.Constant(17)))))), None)
]), "SELECT a != (b != (42 AND 17));")
def test_expr_function__and_eq(self):
self.assertParse(
qSelect(qp.Wildcard(),
where_clause=qp.And(
qp.Equal(qp.Column('a'), qp.Constant(2)),
qp.Not(qp.Equal(qp.Column('b'), qp.Constant(3))))),
"SELECT * WHERE a = 2 AND b != 3;")
def test_unary(self):
name = qp.get_expression_name(qp.Not(qp.Column('account')))
self.assertEqual(name, 'not(account)')
def test_expressions(self):
# comparison operators
self.assertParseTarget("SELECT a = 42;",
qp.Equal(qp.Column('a'), qp.Constant(42)))
self.assertParseTarget(
"SELECT a != 42;", qp.Not(qp.Equal(qp.Column('a'),
qp.Constant(42))))
self.assertParseTarget("SELECT a > 42;",
qp.Greater(qp.Column('a'), qp.Constant(42)))
self.assertParseTarget("SELECT a >= 42;",
qp.GreaterEq(qp.Column('a'), qp.Constant(42)))
self.assertParseTarget("SELECT a < 42;",
qp.Less(qp.Column('a'), qp.Constant(42)))
self.assertParseTarget("SELECT a <= 42;",
qp.LessEq(qp.Column('a'), qp.Constant(42)))
self.assertParseTarget("SELECT a ~ 'abc';",
qp.Match(qp.Column('a'), qp.Constant('abc')))
self.assertParseTarget(
"SELECT a != 42;", qp.Not(qp.Equal(qp.Column('a'),
qp.Constant(42))))
self.assertParseTarget("SELECT not a;", qp.Not(qp.Column('a')))
self.assertParseTarget("SELECT a IS NULL;", qp.IsNull(qp.Column('a')))
self.assertParseTarget("SELECT a IS NOT NULL;",
qp.IsNotNull(qp.Column('a')))
# bool expressions
self.assertParseTarget("SELECT a AND b;",
qp.And(qp.Column('a'), qp.Column('b')))
self.assertParseTarget("SELECT a OR b;",
qp.Or(qp.Column('a'), qp.Column('b')))
self.assertParseTarget("SELECT NOT a;", qp.Not(qp.Column('a')))
# math expressions with identifiers
self.assertParseTarget("SELECT a * b;",
qp.Mul(qp.Column('a'), qp.Column('b')))
self.assertParseTarget("SELECT a / b;",
qp.Div(qp.Column('a'), qp.Column('b')))
self.assertParseTarget("SELECT a + b;",
qp.Add(qp.Column('a'), qp.Column('b')))
self.assertParseTarget("SELECT a+b;",
qp.Add(qp.Column('a'), qp.Column('b')))
self.assertParseTarget("SELECT a - b;",
qp.Sub(qp.Column('a'), qp.Column('b')))
self.assertParseTarget("SELECT a-b;",
qp.Sub(qp.Column('a'), qp.Column('b')))
self.assertParseTarget("SELECT +a;", qp.Column('a'))
self.assertParseTarget("SELECT -a;", qp.Neg(qp.Column('a')))
# math expressions with numerals
self.assertParseTarget("SELECT 2 * 3;",
qp.Mul(qp.Constant(2), qp.Constant(3)))
self.assertParseTarget("SELECT 2 / 3;",
qp.Div(qp.Constant(2), qp.Constant(3)))
self.assertParseTarget("SELECT 2+(3);",
qp.Add(qp.Constant(2), qp.Constant(3)))
self.assertParseTarget("SELECT (2)-3;",
qp.Sub(qp.Constant(2), qp.Constant(3)))
self.assertParseTarget("SELECT 2 + 3;",
qp.Add(qp.Constant(2), qp.Constant(3)))
self.assertParseTarget("SELECT 2+3;",
qp.Add(qp.Constant(2), qp.Constant(3)))
self.assertParseTarget("SELECT 2 - 3;",
qp.Sub(qp.Constant(2), qp.Constant(3)))
self.assertParseTarget("SELECT 2-3;",
qp.Sub(qp.Constant(2), qp.Constant(3)))
self.assertParseTarget("SELECT +2;", qp.Constant(2))
self.assertParseTarget("SELECT -2;", qp.Constant(-2))
# silly, fails at compile time
self.assertParseTarget("SELECT -'abc';", qp.Neg(qp.Constant('abc')))
# functions
self.assertParseTarget("SELECT random();", qp.Function('random', []))
self.assertParseTarget("SELECT min(a);",
qp.Function('min', [qp.Column('a')]))
self.assertParseTarget(
"SELECT min(a, b);",
qp.Function('min', [qp.Column('a'), qp.Column('b')]))
def test_unary(self):
self.assertEqual('not_account',
qp.get_expression_name(qp.Not(qp.Column('account'))))
def test_expr_function__and_not(self):
self.assertParse(
qSelect(qp.Wildcard(),
where_clause=qp.And(qp.Not(qp.Column('a')),
qp.Column('b'))),
"SELECT * WHERE not a AND b;")
def test_expr_not(self):
self.assertParse(qSelect([qp.Target(qp.Not(qp.Column('a')), None)]),
"SELECT NOT a;")
def test_expr_paren_multi(self):
self.assertParse(
qSelect([
qp.Target(qp.Not(qp.Equal(qp.Column('a'), qp.Constant(42))),
None)
]), "SELECT not (a = 42);")
def test_expr_ne(self):
self.assertParse(
qSelect([
qp.Target(qp.Not(qp.Equal(qp.Column('a'), qp.Constant(42))),
None)
]), "SELECT a != 42;")
def test_expr_unaryop(self):
self.assertEqual(
qc.EvalNot(qe.AccountColumn()),
qc.compile_expression(qp.Not(qp.Column('account')),
qe.TargetsEnvironment()))
