CREATE PROCEDURE DEVELOP.SP_CLEANSYNCOLDDATA
AS
m_DataTime date;
BEGIN
m_DataTime := sysdate - 2/24;
delete from T_TRANS_PORT_SYN
where D_UPDATE_TIME <= m_DataTime;
delete from T_TRANS_LINK_ODU_TEST_SYN
where D_UPDATE_TIME <= m_DataTime;
commit;
END;
上面这个创建存储过程的作用是什么?求大神解释下。