优化合集代码

ruoyi-generator/src/main/resources/mapper/community/CommunityCollectionMapper.xml

@@ -20,12 +20,10 @@
         a.update_time,
         '0'  as isFollow
         FROM community_collection a
-        LEFT JOIN community_collection_article b ON a.id = b.collection_id
-        LEFT JOIN community_article c ON b.article_id = c.id
+        LEFT JOIN (select * from community_collection_article where is_delete != '1' OR is_delete IS NULL)  b ON a.id = b.collection_id
+        LEFT JOIN (select * from community_article where is_delete != '1' OR is_delete IS NULL) c ON b.article_id = c.id
         WHERE a.user_id = #{userId}
         AND (a.is_delete != '1' OR a.is_delete IS NULL)
-        AND (b.is_delete != '1' OR b.is_delete IS NULL)
-        AND (c.is_delete != '1' OR c.is_delete IS NULL)
         <if test="articleId != null and articleId != ''">
             AND b.article_id = #{articleId}
         </if>
@@ -58,14 +56,11 @@
         a.update_time,
         '1'  as isFollow
         FROM community_collection a
-        LEFT JOIN community_collection_article b ON a.id = b.collection_id
-        LEFT JOIN community_article c ON b.article_id = c.id
-        LEFT JOIN community_collection_user d ON d.collection_id = a.id
+        LEFT JOIN (select * from community_collection_article where is_delete != '1' OR is_delete IS NULL) b ON a.id = b.collection_id
+        LEFT JOIN (select * from community_article where is_delete != '1' OR is_delete IS NULL) c ON b.article_id = c.id
+        LEFT JOIN (select * from community_collection_user where is_delete != '1' OR is_delete IS NULL)  d ON d.collection_id = a.id
         WHERE d.user_id =  #{userId} AND  d.id  is not null
         AND (a.is_delete != '1' OR a.is_delete IS NULL)
-        AND (b.is_delete != '1' OR b.is_delete IS NULL)
-        AND (d.is_delete != '1' OR d.is_delete IS NULL)
-        AND (c.is_delete != '1' OR c.is_delete IS NULL)
         <if test="articleId != null and articleId != ''">
             AND b.article_id = #{articleId}
         </if>