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  • oracle和mysql批量合并对比

    orm框架采用mybatis,本博客介绍一下批量合并merge用oracle和mysql来做的区别,

    oracle merge合并更新函数的详细介绍可以参考我以前的博客:https://blog.csdn.net/u014427391/article/details/87898729

    oracle方法:

    <!-- 批量更新新增关联信息 oracle-->
    	<insert id="batchSaveTipsRelatedConfig" databaseId="oracle" parameterType="com.extend.tipsConfig.model.TipsRelatedModel">
    		MERGE INTO t_tips_config_related A1 
    		USING(<foreach collection="relatedTipsList" item="itm" separator="union">select #{itm.seq} seq ,
    					 #{itm.tipsSeq} tipsSeq , 
    					 #{itm.relaSeq} relaSeq,
    					 #{itm.tipsContent} tipsContent
    		          from dual
    			</foreach>) A2
    		ON(A1.tips_seq = A2.tipsSeq and A1.rela_seq = A2.relaSeq)
    		WHEN MATCHED THEN
    		UPDATE SET
    		        A1.tips_content = A2.tipsContent
    		WHEN NOT MATCHED THEN
    		INSERT(seq , tips_seq ,  rela_seq, tips_content)
    		VALUES(A2.seq , A2.tipsSeq ,A2.relaSeq, A2.tipsContent)
    	</insert>
    
    

    mysql方法:

    <!-- 批量更新新增关联信息 mysql-->
    	<insert id="batchSaveTipsRelatedConfig" databaseId="mysql" parameterType="com.extend.tipsConfig.model.TipsRelatedModel">
    		REPLACE INTO t_tips_config_related(seq,tips_seq,rela_seq,tips_content)  
    		VALUES<foreach collection="relatedTipsList" item="itm" separator=",">(#{itm.seq},
    					 #{itm.tipsSeq}, 
    					 #{itm.relaSeq},
    					 #{itm.tipsContent})</foreach>
    	</insert>
    
    
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  • 原文地址:https://www.cnblogs.com/mzq123/p/10716244.html
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