SqlServer Merge AddOrUpdate data

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 merge TableName as target using( values(‘FIELDVALUE1‘,‘FIELDVALUE2‘)) as source (FIELDNAME1,FIELDNAME2) on target.FIELDNAME1= source.FIELDNAME1 when matched then update set FIELDNAME2= source.FIELDNAME2 when not matched then insert (FIELDNAME1,FIELDNAME2) values (source.FIELDNAME1,source.FIELDNAME2);
  这是用SqlServer 的MERGE来实现AddOrUpdate功能的

SqlServer Merge AddOrUpdate data

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原文地址：http://www.cnblogs.com/Excelsior/p/5366480.html