mybatis采用foreach实现批量查询功能

<select id="batchValidateDate" resultType="com.mydo.course.svc.entity.vo.CourseSettingInfoCheckVo">
        SELECT keyId, clashCount
        from (
        <foreach collection="list" item="item" index="index" separator="union all">
            SELECT #{item.keyId} as keyId, count(1) as clashCount
            FROM table1 t0, table2 t1
            WHERE t0.is_del= 0 and t0.id = t1.build_id
            and t0.week_day = #{item.weekDay}
            AND t1.classroom_id in
            <foreach collection="item.classroomIdList" item="classroomId" open="(" separator="," close=")">
                #{classroomId}
            </foreach>
            AND
            ((DATE_FORMAT( t0.start_time, '%H:%i' ) &gt;= #{item.startTime} AND DATE_FORMAT( t0.start_time, '%H:%i' ) &lt;= #{item.endTime}) OR
            (DATE_FORMAT( t0.start_time, '%H:%i' ) &lt;= #{item.startTime} AND DATE_FORMAT( t0.end_time, '%H:%i' ) &gt;= #{item.endTime}) OR
            (DATE_FORMAT( t0.end_time, '%H:%i' ) &gt;= #{item.startTime} AND DATE_FORMAT( t0.end_time, '%H:%i' ) &lt;= #{item.endTime}))
            <if test="item.keyId !=null and item.keyId !=''">
                and t0.key_id not in (#{item.keyId})
            </if>
            <if test="item.pullId != null and item.pullId !=''">
                and t0.pull_id = #{item.pullId}
            </if>
        </foreach>
        ) t
        where keyId is not null
    </select>

通过foreach 拼接union all来实现批量查询,在实现过程中出现异常

org.apache.shardingsphere.sql.parser.sql.segment.dml.expr.simple.ParameterMarkerExpressionSegment cannot be cast to org.apache.shardingsphere.sql.parser.sql.segment.LiteralExpressionSegment

经过仔细排查,发现是由于上面sql中标红的地方不能采用#{}这个方法来显示列,而应该使用${}这种方式,困扰了半天,特此记录。


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