下单时 检验库存数

cash-service/order-service/src/main/resources/mapper/OrderInfoCustomMapper.xml

@@ -84,19 +84,21 @@
     <select id="getConsByProductAndNum" resultType="com.czg.product.vo.ConsStockRecord">
         SELECT
         r.cons_info_id AS consId,
-        SUM(
-        CASE r.product_id
+        SUM(r.surplus_stock *
+        CASE
         <foreach collection="productUsageMap.entrySet()" item="qty" index="pid">
-            WHEN #{pid} THEN #{qty}
+            WHEN r.product_id = #{pid} THEN #{qty}
         </foreach>
+        ELSE 0
         END
-        ) AS stockNumber
-        FROM tb_prod_cons_relation r
-        WHERE r.product_id IN
+        ) AS stockNumber,
+        cons.con_name as conName,
+        cons.stock_number as currentStockNumber
+        FROM tb_prod_cons_relation r INNER JOIN tb_cons_info cons on r.cons_info_id = cons.id and cons.is_stock = 1
+        WHERE r.shop_id = #{shopId} AND r.product_id IN
         <foreach collection="productUsageMap.keySet()" item="pid" open="(" separator="," close=")">
             #{pid}
         </foreach>
         GROUP BY r.cons_info_id
     </select>
-
 </mapper>