一期脚本总结

docs/008.20190410标签别名脏数据处理/标签别名脏数据处理.sql

@@ -0,0 +1,38 @@
+use `sys-icss`;
+update icss_retrieval_mapping a join
+(SELECT
+a.id as oldId,
+b.id as newId,
+a.name
+FROM
+(SELECT
+id,name
+FROM icss_retrieval
+WHERE name in
+(SELECT  
+name
+FROM `icss_retrieval`
+group by name
+HAVING count(1)>1)) a
+JOIN
+(SELECT
+id,name
+FROM(
+SELECT
+id,name
+FROM icss_retrieval
+WHERE name in
+(SELECT  
+name
+FROM `icss_retrieval`
+group by name
+HAVING count(1)>1)
+) t
+group by name) b on a.name=b.name) b on a.retrieval_id=b.oldId
+set a.retrieval_id=b.newId;
+
+update icss_retrieval a left join icss_retrieval_mapping b on a.id=b.retrieval_id set a.is_deleted='Y' where b.id is null;
+update icss_retrieval_mapping a left join icss_retrieval b on a.retrieval_id=b.id set a.is_deleted='Y' where b.id is  null;
+delete from icss_retrieval_mapping where is_deleted='Y';
+delete from icss_retrieval where is_deleted='Y';
+