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://cloud.tencent.com/developer/article/1399414
oracle方法：
代码语言：javascript复制<!-- 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：
代码语言：javascript复制<!-- 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>
