MyBatis 集合操作语法范例：配合SQL的in关键字

Java语法：

    private String[] tagIds;

MyBatis语法

  <delete id="deleteByIds" parameterType="java.util.List" >
    delete from BIZ_USER_TAG_REL
    where ID in
    <foreach item="item" index="index" collection="list"
    open="(" separator="," close=")">
      #{item}
    </foreach>
  </delete>

  <delete id="deleteByUserIdAndTagIds" parameterType="com.yuanchuangyun.framework.entity.system.UserTagRel" >
    delete from BIZ_USER_TAG_REL
    where USER_ID = #{userId} AND TAG_ID in
    <foreach item="item" index="index" collection="tagIds"
    open="(" separator="," close=")">
      #{item}
    </foreach>
  </delete>