mybatis批量操作（增删改）sql语句

批量插入

对应sql

insert into tabelname(colum1,colum2...)  values(aa,aa...),(bb,bb...)

　
    
        
            SELECT
            LAST_INSERT_ID()
        
        insert into  wd_solr(fayu_id,tablename,name,logo,description,section_no,look_count,favorite_count,create_uid,create_time,update_time,timestamp)
        values
        
            (
            #{wdSolr.fayuId},#{wdSolr.tablename},#{wdSolr.name},#{wdSolr.logo},
            #{wdSolr.description},#{wdSolr.sectionNo},#{wdSolr.lookCount},#{wdSolr.favoriteCount},
            #{wdSolr.createUid},#{wdSolr.createTime},#{wdSolr.updateTime},#{wdSolr.timestamp}
            )
        
    

批量更新

对应Sql

update tablename set 
         colum1= case id when 1 then aa
         when 2 then bb
         when 3 then cc
         ....
         end,
         colum2=case id when 1 then aa
         when 2 then bb
         when 3 then cc
         ....
         end,
where id in (1,2,3....)

    
        update wd_solr set
        name =
        
            when #{wdSolr.id} then
            #{wdSolr.name}
        
        ,logo =
        
            when #{wdSolr.id} then
            #{wdSolr.logo}
                
        ,timestamp =
        
            when #{wdSolr.id} then #{wdSolr.timestamp}
        
        where id in
        
            #{wdSolr.id}
        
    

批量删除

对应sql

delete from tablename where id in (1,2,3....)

    
        delete from wd_solr where
        id in (
        
            #{wdSolr.id}
        
        )
    

注：批量插入、更新不建议使用，如果数据过大，参数过多同时操作于一条sql会极度占用连接资源，建议使用循环操作单条执行语句。