All rows in Oracle have a rowid. This is a physical locator. That is, it states where on disk Oracle stores the row. This unique to each row. So you can use this value to identify and remove copies. To do this, replace min() with min(rowid) in the uncorrelated delete: Copy code ...
Delete Duplicate Rows Posted by:Benjamin Spencer Date: June 17, 2011 09:29AM Hello, Would really appreciate help here... I was wondering how to delete all rows except for one where the row has an individual ID and the rest of the fields are duplicated i.e....
You can duplicate, edit, or delete user-defined measures using the Manage Planning Measures task, which is available in the Tasks drawer.
If you prefer to replicate single-row updates as UPDATE statements instead of DELETE or INSERT pairs, you can enable Trace Flag 8207. Additionally, if you use a horizontal filter in your publication and if the updated row doesn't meet a filter condition, only a DELETE procedure call...
通过这样做,我找到了自己的方法: \DB::beginTransaction();try { \DB::table('table_name')->where('id', $data[0]['id'])->delete(); // delete it first to avoid id duplicate when inserting, comment this if id is auto increment $status = \DB::table('table_name')->insert($data[0...
Oracle" for linked server Cannot grant, deny, or revoke permissions to sa, dbo, entity owner, information_schema, sys, or yourself. Cannot insert duplicate key row in object... Cannot insert the value NULL into column 'ID', table Cannot open backup device 'C:\TEMP\Demo.bak'. Operating ...
CDC for Oracle results in transaction log growth Duplicate key rows from sys.syscommittab table Error message when you run the Distribution Agent Fail to enumerate subscription properties Install service packs and hotfixes Issue with custom business logic handler ...
将不起作用,因为如果该字段已经存在,它将简单地忽略它并且不插入任何内容。将不起作用,因为如果字段已经存在,它将首先对其执行DELETE操作,然后再次对其执行INSERT操作,而不是更新它。将会起作用,但不能批量使用。 所以我想知道是否有像INSERT ...ON DUPLICATE KEY UPDATE这样的命令可以批量</e...
When you use a REPLACE command, mysql_affected_rows( ) will return 2 if the new row replaced an old row. This is because one row was inserted and then the duplicate was deleted. This fact makes it easy to determine whether REPLACE added or replaced a row: check whether the affected-row...
insert into t4 values(1);//Query OK, 1 row affected (0.01 sec) ERROR 1213 (40001): Deadlock found when trying to get lock; 从上面可以看出,并发事务执行delete,T2等待,T1再执行insert相同value的数据时出现死锁。死锁分析死锁原因insert时如果数据出现duplicate key,会加LOCK_S锁,类型为NEXT-KEY LOCK...