def has_all(self, other):
"""Boolean expression. Test for presence of all keys in the PG
array.
"""
return self.expr.op('?&')(other)
python类array()的实例源码
def has_any(self, other):
"""Boolean expression. Test for presence of any key in the PG
array.
"""
return self.expr.op('?|')(other)
def keys(self):
"""Text array expression. Returns array of keys."""
return _HStoreKeysFunction(self.expr)
def vals(self):
"""Text array expression. Returns array of values."""
return _HStoreValsFunction(self.expr)
def array(self):
"""Text array expression. Returns array of alternating keys and
values.
"""
return _HStoreArrayFunction(self.expr)
def matrix(self):
"""Text array expression. Returns array of [key, value] pairs."""
return _HStoreMatrixFunction(self.expr)
def __init__(self, clauses, **kw):
super(array, self).__init__(*clauses, **kw)
self.type = ARRAY(self.type)
def _bind_param(self, operator, obj):
return array([
expression.BindParameter(None, o, _compared_to_operator=operator,
_compared_to_type=self.type, unique=True)
for o in obj
])
def any(self, other, operator=operators.eq):
"""Return ``other operator ANY (array)`` clause.
Argument places are switched, because ANY requires array
expression to be on the right hand-side.
E.g.::
from sqlalchemy.sql import operators
conn.execute(
select([table.c.data]).where(
table.c.data.any(7, operator=operators.lt)
)
)
:param other: expression to be compared
:param operator: an operator object from the
:mod:`sqlalchemy.sql.operators`
package, defaults to :func:`.operators.eq`.
.. seealso::
:class:`.postgresql.Any`
:meth:`.postgresql.ARRAY.Comparator.all`
"""
return Any(other, self.expr, operator=operator)
def all(self, other, operator=operators.eq):
"""Return ``other operator ALL (array)`` clause.
Argument places are switched, because ALL requires array
expression to be on the right hand-side.
E.g.::
from sqlalchemy.sql import operators
conn.execute(
select([table.c.data]).where(
table.c.data.all(7, operator=operators.lt)
)
)
:param other: expression to be compared
:param operator: an operator object from the
:mod:`sqlalchemy.sql.operators`
package, defaults to :func:`.operators.eq`.
.. seealso::
:class:`.postgresql.All`
:meth:`.postgresql.ARRAY.Comparator.any`
"""
return All(other, self.expr, operator=operator)
def contains(self, other, **kwargs):
"""Boolean expression. Test if elements are a superset of the
elements of the argument array expression.
"""
return self.expr.op('@>')(other)
def overlap(self, other):
"""Boolean expression. Test if array has elements in common with
an argument array expression.
"""
return self.expr.op('&&')(other)
def has_all(self, other):
"""Boolean expression. Test for presence of all keys in the PG
array.
"""
return self.expr.op('?&')(other)
def has_any(self, other):
"""Boolean expression. Test for presence of any key in the PG
array.
"""
return self.expr.op('?|')(other)
def keys(self):
"""Text array expression. Returns array of keys."""
return _HStoreKeysFunction(self.expr)
def vals(self):
"""Text array expression. Returns array of values."""
return _HStoreValsFunction(self.expr)
