Method fork

class/wptoolkitModel/sqlite_easy.py:2757–2783

@name 克隆一个查询构造器 @author Zhj<2022-07-19> @return SqliteEasy|None

(self)

        return self

    def fork(self):
        '''
            @name 克隆一个查询构造器
            @author Zhj<2022-07-19>
            @return SqliteEasy|None
        ''&#x27;
        if self.__DB is None:
            return None

        query = self.__DB.query()
        query.set_pk(self.__PK)
        if self.__FROM_SUB_QUERY:
            query.from_sub_query(self.__DB_TABLE)
        else:
            query.table(self.__DB_TABLE)
        query.prefix(self.__OPT_PREFIX)
        query.alias(self.__OPT_ALIAS)
        query.set_where_obj(copy.deepcopy(self.__OPT_WHERE))
        query.set_limit_obj(copy.deepcopy(self.__OPT_LIMIT))
        query.set_order_obj(copy.deepcopy(self.__OPT_ORDER))
        query.set_field_obj(copy.deepcopy(self.__OPT_FIELD))
        query.set_group_obj(copy.deepcopy(self.__OPT_GROUP))
        query.set_having_obj(copy.deepcopy(self.__OPT_HAVING))
        query.set_join_obj(copy.deepcopy(self.__OPT_JOIN))
        query.set_update_obj(copy.deepcopy(self.__OPT_UPDATE))

        return query

    def explain_raw_sql(self, raw_sql, bind_params=()):
        ''&#x27;