mybatis foreach批量插入数据:Oracle与MySQL不同点:
主要不同点在于foreach标签内separator属性的设置问题:
separator设置为","分割时,最终拼接的代码形式为:insert into table_name (a,b,c) values (v1,v2,v3) ,(v4,v5,v6) ,...
separator设置为"union all"分割时,最终拼接的代码形式为:insert into table_name (a,b,c) values (v1,v2,v3) union all (v4,v5,v6) union all...
详情请见示例代码:
Oracle: <insert parameterType="com.test.aaa.Bac"> insert into table_name (name, adress, age) values <foreach collection="list" item="item" index="index" separator="union all"> (select #{item.name}, #{item.adress}, ${item.age} from dual ) <foreach> </insert> MySQL: <insert parameterType="com.test.aaa.Bac"> insert into table_name (name, adress, age) values <foreach collection="list" item="item" index="index" separator=","> ( #{item.name}, #{item.adress}, ${item.age} ) <foreach> </insert>