compiler.py 文件源码

def compile_zdb_score(element, compiler, **kw):
    clauses = list(element.clauses)
    if len(clauses) != 1:
        raise ValueError("Incorrect params")

    c = clauses[0]
    if isinstance(c, BindParameter) and isinstance(c.value, DeclarativeMeta):
        return "zdb_score(\'%s\', %s.ctid)" % (c.value.__tablename__, c.value.__tablename__)

    raise ValueError("Incorrect param")