columns.py 文件源码

def __init__(self, x):
        if isinstance(x, unicode):
            x = column(x)
        if not isinstance(x, UnaryExpression):
            x = asc(x)
        self.uo = x
        self.full_name = str(self.element)
        try:
            table_name, name = self.full_name.split('.', 1)
        except ValueError:
            table_name = None
            name = self.full_name

        self.table_name = table_name
        self.name = name