功能OracleMysql判断是否为空NVLIFNULL順序號 SEQUENCE SELECT LPAD(SMT.NEXTVAL('SEQ1') ,10,'0') FROM DUAL 替換內容 decode(ttype,1,’a',2,’b',3,’c',’d') if(ttype=1, 'a',if(ttype=2,'b', if(ttype = ...
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