A表:goods_type
B表:brand_config
A:B = 1:N
一种商品类型 对应多条 品牌配置
========================================
需求:如果这个商品分类有对应的品牌配置,则返回字段值为true
========================================
示例代码:
<select id="findRoot2" parameterType="com.pisen.cloud.luna.ms.goods.base.domain.GoodsType" resultType="com.pisen.cloud.luna.ms.goods.base.domain.GoodsType"> select g.create_date createDate, g.uid uid, g.name name, g.py_all pyAll, g.py_head pyHead, g.outer_id outerId, g.outer_code outerCode, g.mnemonic_code mnemonicCode, g.enabled_flag enabledFlag, g.remark remark, g.parent_uid parentUid, g.tenement_id tenementId, x.isconfig isconfig from goods_type g LEFT JOIN (SELECT CASE WHEN COUNT(id)>0 THEN 'true' ELSE 'false' END isconfig,brand_uid from brand_config GROUP BY brand_uid ) x ON x.brand_uid = g.uid where tenement_id = #{tenementId} and parent_uid IS NULL and del_flag = 0 <if test="name != null and name != ''"> AND name like '%' #{name} '%' </if> <if test="outerCode != null and outerCode != ''"> AND outer_code = #{outerCode} </if> </select>