base.py 文件源码

def get_column_default_string(self, column):
        if (isinstance(column.server_default, schema.DefaultClause) and
            isinstance(column.server_default.arg, basestring)):
                if isinstance(column.type, (sqltypes.Integer, sqltypes.Numeric)):
                    return self.sql_compiler.process(text(column.server_default.arg))

        return super(InfoDDLCompiler, self).get_column_default_string(column)

    ### Informix wants the constraint name at the end, hence this ist c&p from sql/compiler.py