MERGE INTO在Sql Server和Oracle中都支持,在大批量更新的时候,MERGE INTO的效率要比Update高很多

	MERGE INTO "$tableHead$".tb$AccYM$_ChgDetail chg USING
		  (
		  select * from $TEMP_ZKCharge$
		  ) DT ON (chg.BillNumber = DT.ChgBillNumber)
		  WHEN MATCHED THEN UPDATE SET
		  chg.CollectType          = 2,
		  chg.CollectDate          = DT.BuildDate,
		  chg.CollectManCode       = DT.BuildManCode,
		  chg.CollectManName       = DT.BuildManName,
		  chg.CollectSAMBillNumber = DT.BillNumber;

注意:在Sql Server中执行时,语句结束必须带分号
在Oracle中执行时,语句结束不能带分号