fix

netflix-dao/src/main/resources/mapper/CouponRecommendMapper.xml

@@ -59,7 +59,7 @@
     </select>
 
     <select id="checkPresentRecommendByCouponId" resultType="java.lang.Integer">
-        select cr.coupon_id
+        select count(1)
         from coupon_recommend cr
                  inner join coupon c on c.id = cr.coupon_id
         where cr.coupon_id = #{couponId}