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一个列表为另一个列表的子集的SQL如何编写，及在MyBatis中如何处理

一个列表为另一个列表的子集的SQL如何编写，及在MyBatis中如何处理

需求是这样的，一个字段它在创建的时候是允许多选的，然后再分页的时候，用户传递的条件它也是多选的，所以我们需要判断一个集合中得元素是否全部属于另一个集合。

举例来说，就是判断["A", "B"]是否属于["A", "B", "C", "D"]，在PG中，该需求可以通过如下SQL实现：

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select * from t_trend_model where company_view_allow::jsonb ?& array['83','42'];

但是该SQL是不能直接移植到MyBatis中使用了，问题一是&符号要转义，问题二是?要写成??，代码如下：

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    <select id="pageTrendModel" resultType="com.sdstc.tmp.server.entity.TrendModel">
        select * from t_trend_model trm

        <!-- 登录状态，且搜索条件中包含收藏 -->
        <if test="loginFlag == 1 and condition.collect == 1">
            join t_favorite tf on trm.id = tf.trend_model_id
        </if>

        <!-- 登录状态，且搜索条件中包含浏览 -->
        <if test="loginFlag == 1 and condition.viewed == 1">
            join t_viewed tv on trm.id = tv.trend_model_id
        </if>
        where trm.is_delete = 0

        <!-- 登录状态，且搜索条件中包含收藏 -->
        <if test="loginFlag == 1 and condition.collect == 1">
            and tf.is_delete = 0
            and tf.creator = #{userId}
        </if>

        <!-- 登录状态，且搜索条件中包含浏览 -->
        <if test="loginFlag == 1 and condition.viewed == 1">
            and tv.is_delete = 0
            and tv.creator = #{userId}
        </if>

        <!-- 关键字 -->
        <if test="@org.apache.commons.lang3.StringUtils@isNotBlank(condition.keyword)">
            <bind name="keyword" value="'%' + condition.keyword + '%'"/>
            and (trm.theme like #{keyword} or trm.design_points like #{keyword})
        </if>

        <!-- 趋势主题 -->
        <if test="@org.apache.commons.collections4.CollectionUtils@isNotEmpty(condition.themes)">
            AND trm.theme in
            <foreach collection="condition.themes" open="(" close=")" item="themes" separator=",">
                #{theme}
            </foreach>
        </if>

        <!-- 适用品牌 -->
        <if test="@org.apache.commons.collections4.CollectionUtils@isNotEmpty(condition.brands)">
            AND trm.brand in
            <foreach collection="condition.brands" open="(" close=")" item="brand" separator=",">
                #{brand}
            </foreach>
        </if>

        <!-- 允许预览 -->
        <if test="loginFlag == 1 and condition.allowView == 1">
            AND (trm.personal_allow_view = 1 or trm.company_view_allow::jsonb ??&amp; array[#{tenantId}])
        </if>

        <!-- 发布状态 -->
        <if test="@org.apache.commons.collections4.CollectionUtils@isNotEmpty(condition.publishStatus)">
            AND trm.publish_status in
            <foreach collection="condition.publishStatus" open="(" close=")" item="publishStatusItem" separator=",">
                #{publishStatusItem}
            </foreach>
        </if>

        <!-- 型体号 -->
        <if test="@org.apache.commons.collections4.CollectionUtils@isNotEmpty(condition.modelNumbers)">
            AND trm.model_number in
            <foreach collection="condition.modelNumbers" open="(" close=")" item="modelNumber" separator=",">
                #{modelNumber}
            </foreach>
        </if>

        <!-- 鞋底 -->
        <if test="@org.apache.commons.collections4.CollectionUtils@isNotEmpty(condition.soles)">
            AND trm.sole in
            <foreach collection="condition.soles" open="(" close=")" item="sole" separator=",">
                #{sole}
            </foreach>
        </if>

        <!-- 跟型 -->
        <if test="@org.apache.commons.collections4.CollectionUtils@isNotEmpty(condition.heelTypes)">
            AND trm.heel_type in
            <foreach collection="condition.heelTypes" open="(" close=")" item="heelType" separator=",">
                #{heelType}
            </foreach>
        </if>

        <!-- 跟高 -->
        <if test="@org.apache.commons.collections4.CollectionUtils@isNotEmpty(condition.heelHeights)">
            AND trm.heel_height in
            <foreach collection="condition.heelHeights" open="(" close=")" item="heelHeight" separator=",">
                #{heelHeight}
            </foreach>
        </if>

        <!-- 款式类型 -->
        <if test="@org.apache.commons.collections4.CollectionUtils@isNotEmpty(condition.shapeTypes)">
            AND trm.shape_type in
            <foreach collection="condition.shapeTypes" open="(" close=")" item="shapeType" separator=",">
                #{shapeType}
            </foreach>
        </if>

        <!-- 流行趋势 -->
        <if test="@org.apache.commons.collections4.CollectionUtils@isNotEmpty(condition.trendTags)">
            AND trm.trend_tags::jsonb ??&amp;
            <foreach collection="condition.trendTags" open="array[" close="]" item="trendTag" separator=",">
                #{trendTag}
            </foreach>
        </if>

        <!-- 流行地区 -->
        <if test="@org.apache.commons.collections4.CollectionUtils@isNotEmpty(condition.regions)">
            AND trm.regions::jsonb ??&amp;
            <foreach collection="condition.regions" open="array[" close="]" item="region" separator=",">
                #{region}
            </foreach>
        </if>

        <!-- 场景风格 -->
        <if test="@org.apache.commons.collections4.CollectionUtils@isNotEmpty(condition.styles)">
            AND trm.styles::jsonb ??&amp;
            <foreach collection="condition.styles" open="array[" close="]" item="style" separator=",">
                #{style}
            </foreach>
        </if>

        <!-- 面料元素 -->
        <if test="@org.apache.commons.collections4.CollectionUtils@isNotEmpty(condition.materialElements)">
            AND trm.material_elements::jsonb ??&amp;
            <foreach collection="condition.materialElements" open="array[" close="]" item="materialElement"
                     separator=",">
                #{materialElement}
            </foreach>
        </if>

        <!-- 装饰元素 -->
        <if test="@org.apache.commons.collections4.CollectionUtils@isNotEmpty(condition.decorativeElements)">
            AND trm.decorative_elements::jsonb ??&amp;
            <foreach collection="condition.decorativeElements" open="array[" close="]" item="decorativeElement"
                     separator=",">
                #{decorativeElement}
            </foreach>
        </if>

        <!-- 工艺 -->
        <if test="@org.apache.commons.collections4.CollectionUtils@isNotEmpty(condition.crafts)">
            AND trm.crafts::jsonb ??&amp;
            <foreach collection="condition.crafts" open="array[" close="]" item="craft"
                     separator=",">
                #{craft}
            </foreach>
        </if>

        <!-- 适用季节 -->
        <if test="@org.apache.commons.collections4.CollectionUtils@isNotEmpty(condition.seasons)">
            AND trm.seasons::jsonb ??&amp;
            <foreach collection="condition.seasons" open="array[" close="]" item="season"
                     separator=",">
                #{season}
            </foreach>
        </if>

        <!-- 色系 -->
        <if test="@org.apache.commons.collections4.CollectionUtils@isNotEmpty(condition.colors)">
            AND trm.colors::jsonb ??&amp;
            <foreach collection="condition.colors" open="array[" close="]" item="color"
                     separator=",">
                #{color}
            </foreach>
        </if>

        <!-- 是否推荐 -->
        <if test="condition.isRecommend != null">
            AND trm.is_recommend = #{condition.isRecommend}
        </if>

        <!-- 设计师Id -->
        <if test="@org.apache.commons.lang3.StringUtils@isNotBlank(condition.designerId)">
            AND trm.designer_id = #{condition.designerId}
        </if>
    </select>

参考资料

  1. PostgreSQL JSONB 使用入门
  2. Mybatis特殊字符转义以及sql中带有问号(?)的处理方式