ExerciseDictMapper.xml
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<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="com.meishu.mapper.ExerciseDictMapper">
<!-- 通用查询映射结果 -->
<resultMap id="BaseResultMap" type="com.meishu.model.ExerciseDictDO">
<id column="id" property="id" />
<result column="create_date" property="createDate" />
<result column="update_date" property="updateDate" />
<result column="delete_date" property="deleteDate" />
<result column="exercise_type" property="exerciseType" />
<result column="title" property="title" />
<result column="items" property="items" />
<result column="right_answer" property="rightAnswer" />
<result column="detail" property="detail" />
</resultMap>
<!-- 通用查询结果列 -->
<sql id="Base_Column_List">
create_date,
update_date,
delete_date,
id, exercise_type, title, items, right_answer, detail
</sql>
<select id="labelExercises" parameterType="long" resultType="com.meishu.vo.exercise.LabelExercisesVO">
SELECT
t.*,
t2.label
FROM
exercise_dict t
LEFT JOIN label_dict t2 ON t.label_id = t2.id
WHERE
t.delete_date IS NULL
<if test="labelId != null and labelId != ''">
AND t.label_id = #{labelId}
</if>
order by t.id
</select>
</mapper>