SqlServer和Mysql插入记录前判断是否存在,存在则插入,不存在则修改。


SqlServer中是这样:

if NOT exists(SELECT * FROM Setting WHERE ID=0)
INSERT INTO Setting(ID,Title,SearchKeys, ServiceIntervalSecond,SleepMillisecondPerSearch) VALUES(0,@title,@searchKeys,@serviceIntervalSecond,@sleepMillisecondPerSearch)
ELSE
UPDATE Setting SET Title=@title,SearchKeys=@searchKeys,ServiceIntervalSecond=@serviceIntervalSecond, SleepMillisecondPerSearch=@sleepMillisecondPerSearch

MySqL中是这样:

INSERT INTO `his_examine_result` (Mid,His_Examine_Mid, His_File_Mid, ResultType, His_Employee_Mid,
His_Employee_Name, ExamineResult, ExamineItemName, ExamineStandardName,
ExamineItemUnit, ExamineHighValue, ExamineLowValue, ExamineDiscription, Discription)
VALUES ($mid,$examineMid,$fileMid,1,null,null,'',$itemName,$standName,$itemUnit,$highValue,$lowValue,'','')
ON DUPLICATE KEY UPDATE ExamineResult=$result,ExamineDiscription=$dis
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