优化邻里党群我的群列表查询慢问题

esua-epdc/epdc-module/epdc-group/epdc-group-server/src/main/resources/mapper/group/GroupDao.xml

@@ -108,29 +108,30 @@
 
     <select id="selectListGroupsOfMine" resultType="com.elink.esua.epdc.dto.group.result.GroupsOfMineResultDTO">
         SELECT
-	tmp.ID,
-	tmp.GROUP_NAME,
-	tmp.GROUP_AVATAR,
-	tmp.GROUP_CATEGORY,
-	tmp.STATE,
-	tmp.totalNum,
-	tmp.partyMemberNum,
-	tmp.unreadTopicNum,
-	tmp.latestTopicTime,
-	CASE
-			WHEN tmp.STATE = 0 THEN
+	t.ID,
+	t.GROUP_NAME,
+	t.GROUP_AVATAR,
+	t.GROUP_CATEGORY,
+	t.STATE,
+	t.totalNum,
+	t.partyMemberNum,
+	COUNT( DISTINCT ugpr.ID ) AS unreadTopicNum,
+	MAX( tp.CREATED_TIME ) AS latestTopicTime,
+CASE
+
+		WHEN t.STATE = 0 THEN
 		'网格长会尽快审核您创建的社群，请耐心等待'
-			WHEN tmp.STATE = 5 THEN
-			tmp.PROCESSING_OPINIONS
+		WHEN t.STATE = 5 THEN
+		t.PROCESSING_OPINIONS
 		WHEN (
-				tmp.STATE = 10
-				AND totalNum <![CDATA[ <= ]]> 1
-				AND tmp.GROUP_CATEGORY = '1'
-				AND tmp.topicNum = 0
+			t.STATE = 10
+			AND t.totalNum <![CDATA[ <= ]]> 1
+			AND t.GROUP_CATEGORY = '1'
+			AND COUNT( DISTINCT tp.ID ) = 0
 			) THEN
 			'您的社群审核已通过，快加好友进来吧' ELSE ''
 		END AS description
-FROM
+	FROM
 		(
 		SELECT
 			gp.ID,
@@ -139,51 +140,39 @@ FROM
 			gp.GROUP_CATEGORY,
 			gp.STATE,
 			gp.PROCESSING_OPINIONS,
-		(
-		SELECT
-			COUNT( t.ID )
+			SUM( ugp.STATE = 10 ) AS totalNum,
+			SUM( ugp.PARTY_MEMBER = '1' ) AS partyMemberNum
 		FROM
-			epdc_user_group t
+			epdc_group gp
+			LEFT JOIN epdc_user_group ugp ON ugp.GROUP_ID = gp.ID
+			AND ugp.DEL_FLAG = '0'
+			AND ugp.STATE = 10
 		WHERE
-			t.GROUP_ID = gp.ID
-			AND t.DEL_FLAG = '0'
-			AND t.STATE = 10
-		) AS totalNum,
-		(
+			gp.ID IN (
 			SELECT
-			COUNT( t1.ID )
-		FROM
-			epdc_user_group t1
-		WHERE
-			t1.GROUP_ID = gp.ID
-			AND t1.DEL_FLAG = '0'
-			AND t1.STATE = 10
-			AND t1.PARTY_MEMBER = '1'
-		) AS partyMemberNum,
-		COUNT( DISTINCT ugpr.ID ) AS unreadTopicNum,
-		MAX( tp.CREATED_TIME ) AS latestTopicTime,
-		COUNT( DISTINCT tp.ID ) AS topicNum
+				gp.ID
 			FROM
 				epdc_group gp
 				RIGHT JOIN epdc_user_group ugp ON gp.ID = ugp.GROUP_ID
 				AND ugp.DEL_FLAG = '0'
-			AND ugp.USER_ID = #{userId}
 				AND ugp.STATE = 10
-			LEFT JOIN epdc_group_topic_user_read ugpr ON gp.ID = ugpr.GROUP_ID
-			AND ugpr.DEL_FLAG = '0'
-			AND ugpr.USER_ID = #{userId}
-			AND ugpr.READ_FLAG = '0'
-			LEFT JOIN epdc_topic tp ON gp.ID = tp.GROUP_ID
-			AND tp.DEL_FLAG = '0'
+				AND ugp.USER_ID = #{userId}
 			WHERE
 				gp.DEL_FLAG = '0'
+				AND gp.STATE <![CDATA[ AND gp.STATE <> ]]> 20
 				AND gp.GRID_ID = #{gridId}
-			<![CDATA[ AND gp.STATE <> ]]> 20
+			)
 		GROUP BY
 			gp.ID
-		ORDER BY
-			MAX( tp.CREATED_TIME ) DESC
-		) tmp
+		) t
+		LEFT JOIN epdc_group_topic_user_read ugpr ON t.ID = ugpr.GROUP_ID
+		AND ugpr.DEL_FLAG = '0'
+		AND ugpr.USER_ID = #{userId}
+		AND ugpr.READ_FLAG = '0'
+		LEFT JOIN epdc_topic tp ON t.ID = tp.GROUP_ID
+		AND tp.DEL_FLAG = '0'
+	GROUP BY
+		t.ID
 ORDER BY
 	latestTopicTime DESC
     </select>