mybatis sql in 查询（mybatis sql语句传入参数是list）mybatis中使用in查询时in怎么接收值

Posted 2020-08-23 THISISPAN

1.in查询条件是list时

<select id="getMultiMomentsCommentsCounts" resultType="int">
select moment_comment_count from tbl_moment_commentCount where mid in
<foreach item="item" index="index" collection="list" open="(" separator="," close=")"> 
    #{item} 
</foreach> 
</select>

.1 如果参数的类型是List, 则在使用时，collection属性要必须指定为 list

1. <select id="findByIdsMap" resultMap="BaseResultMap">  
2.  Select  
3.  <include refid="Base_Column_List" />  
4.  from jria where ID in  
5.  <foreach item="item" index="index" collection="list" open="(" separator="," close=")">  
6.   #{item}  
7.  </foreach>  
8. </select>  

2.in查询条件是枚举值时

默认下,使用select xxx where in(xx,xx)查询,返回结果是按主键排序的,如果要按in()中值的排列顺序,可以这样做:

 

select * from talbe where id in(3,2,4,1) ORDER BY FIND_IN_SET( id, ‘3,2,4,1‘)