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一、常见语法或者问题收集

1、MyBatis 不支持 having 节点

比如在 GROUP BY 之后添加了 HAVING 子句，其内容为SUM(vsbsad.business_income) >= 0，该子句会对分组后的 SUM(vsbsad.business_income) 结果进行过滤，仅保留求和结果不为负数的分组记录。但是试过不支持。可把 having 条件嵌入到 select 语句里，当作一个子查询，然后在外部查询里对该条件进行过滤

<select id="findStoreSaleInfoDetail" resultType="com.test.dto.res.store.StoreSaleBaseInfolDTO">SELECT *FROM (SELECTds.id AS storeId,ds.store_name AS storeName,SUM(vsbsad.business_income) AS businessIncomeFROMstore dsINNER JOINstore_business_di vsbsadONds.id = vsbsad.store_id<where><if test="startDate != null and endDate != null">and vsbsad.sdt between #{startDate} and #{endDate}</if><!-- 新增 storeIds 过滤条件 --><if test="req.storeIds != null and req.storeIds.size() > 0">AND ds.id IN<foreach item="storeId" collection="req.storeIds" open="(" separator="," close=")">#{storeId}</foreach></if></where>GROUP BYds.id,) subqueryWHERE subquery.businessIncome >= 0
</select>