Method has_key

lib/sqlalchemy/dialects/postgresql/json.py:332–336

Boolean expression. Test for presence of a key (equivalent of the ``?`` operator). Note that the key may be a SQLA expression.

(self, other: Any)

        type: JSONB[_CT_JSON]

        def has_key(self, other: Any) -> ColumnElement[bool]:
            """Boolean expression.  Test for presence of a key (equivalent of
            the ``?`` operator).  Note that the key may be a SQLA expression.
            """
            return self.operate(HAS_KEY, other, result_type=sqltypes.Boolean)

        def has_all(self, other: Any) -> ColumnElement[bool]:
            """Boolean expression.  Test for presence of all keys in jsonb