admin/ruoyi-modules/ruoyi-system/src/main/resources/mapper/business/TournamentEntryConditionsMapper.xml

<?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="org.dromara.business.mapper.TournamentEntryConditionsMapper">


    <!-- 插入数据，字段为空则插入默认值或不插入 -->
    <insert id="insert" useGeneratedKeys="true" keyProperty="id">
        INSERT INTO tournament_entry_conditions
        <trim prefix="(" suffix=")" suffixOverrides=",">
            <if test="tournamentId != null and tournamentId.toString() != ''">tournament_id,</if>
            <if test="itemId != null and itemId.toString() != ''">item_id,</if>
            <if test="requiredQuantity != null and requiredQuantity.toString() != ''">required_quantity,</if>
        </trim>
        VALUES
        <trim prefix="(" suffix=")" suffixOverrides=",">
            <if test="tournamentId != null and tournamentId.toString() != ''">#{tournamentId},</if>
            <if test="itemId != null and itemId.toString() != ''">#{itemId},</if>
            <if test="requiredQuantity != null and requiredQuantity.toString() != ''">#{requiredQuantity},</if>
        </trim>
    </insert>

    <!-- 动态更新记录 -->
    <update id="updateByTournamentId">
        UPDATE tournament_entry_conditions
        <set>
            <if test="itemId != null and itemId.toString() != ''">
                item_id = #{itemId},
            </if>
            <if test="requiredQuantity != null and requiredQuantity.toString() != ''">
                required_quantity = #{requiredQuantity},
            </if>
            updated_at = CURRENT_TIMESTAMP
        </set>
        WHERE tournament_id = #{tournamentId}
    </update>

    <!-- 删除记录，只在id有效时删除 -->
    <delete id="deleteById">
        DELETE FROM tournament_entry_conditions
        WHERE id = #{id}
          AND #{id} IS NOT NULL
    </delete>

    <!-- 查询单条记录 -->
    <select id="selectById" resultType="org.dromara.business.domain.vo.TournamentEntryConditionsVo">
        SELECT *
        FROM tournament_entry_conditions
        WHERE id = #{id}
    </select>

    <!-- 根据比赛ID查询报名条件 -->
    <select id="selectByTournamentId" resultType="org.dromara.business.domain.vo.TournamentEntryConditionsVo">
        SELECT *
        FROM tournament_entry_conditions
        WHERE tournament_id = #{tournamentId}
    </select>

    <select id="selectByTournamentInfo" resultType="org.dromara.business.domain.vo.TournamentEntryConditionsVo">
       SELECT  a.tournament_id,a.item_id,a.required_quantity,b.name itemsName
        FROM tournament_entry_conditions a left join items b on a.item_id=b.id
        WHERE a.tournament_id = #{tournamentId}
    </select>

</mapper>