授权分组查询

src/main/java/cn/chjyj/szwh/mapper/OrderUserMapper.java

@@ -4,6 +4,8 @@ import cn.chjyj.szwh.bean.OrderUser;
 import org.apache.ibatis.annotations.Param;
 import org.springframework.stereotype.Component;
 
+import java.util.List;
+
 
 /**
  * 用户订单mapper
@@ -18,4 +20,11 @@ public interface OrderUserMapper {
      */
     OrderUser getUserOrder(@Param("batchcode") String batchcode,
                            @Param("islicode") String islicode);
+
+    /**
+     * 按照isli 分组统计最大id
+     * 用户ISLI标识码
+     * @return
+     */
+    List<Integer> isligroup();
 }

src/main/resources/mapper/szwh/OrderUserMapper.xml

@@ -20,11 +20,11 @@
         where islicode=#{islicode} and batchcode=#{batchcode};
     </select>
 
-    <!--根据uid查询用户-->
+    <!-- 按照isli 分组统计最大id  isligroup-->
-    <select id="getUserByUid" parameterType="java.lang.Integer" resultType="cn.chjyj.szwh.bean.Goods">
+    <select id="isligroup" resultType="java.lang.Integer">
-        select <include refid="column"/>
+        select MAX(id)
         from <include refid="tbName"/>
-        where uid=#{uid}
+        GROUP By islicode
     </select>
 
     <!--查询用户名,加上密码-->

src/test/java/cn/chjyj/szwh/mapper/OrderUserMapperTest.java

@@ -7,6 +7,9 @@ import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.boot.test.context.SpringBootTest;
 import org.springframework.test.context.junit4.SpringRunner;
 
+import java.util.List;
+import java.util.Map;
+
 import static org.junit.Assert.*;
 
 @SpringBootTest
@@ -22,4 +25,13 @@ public class OrderUserMapperTest {
         OrderUser orderUser = orderUserMapper.getUserOrder(batch,islicode);
         System.out.println(orderUser.getName());
     }
+
+    @Test
+    public void isligroup(){
+        List<Integer> mp =orderUserMapper.isligroup();
+        for(Integer i:mp){
+            System.out.println(i);
+        }
+        //System.out.println(mp.size());
+    }
 }