一、 相同点 不带条件的delete与truncate均可删除表中所有数据 delete与truncate均可回滚,这是跟oracle很不一样的地方,oracle的truncate不能回滚,pg可以 均不更改表结构、索引、约束等 均不会缩小数据文件大小,若要缩小需使用 DBCC SHRINKFILE (N'Testdb' , 40000) 二、 不同点
想保留表而将所有数据删除. 如果和事务无关,用truncate即可. 如果和事务有关,或者想触发trigger,还是用delete. 如果是整理表内部的碎片,可以用truncate跟上reuse stroage,再重新导入/插入数据 The difference in TRUNCATE and DELETE in Sql Server I’ve answered this question many times, and answered it again ...
difference between Truncate and Delete 一、delete产生rollback,如果删除大数据量的表速度会很慢,同时会占用很多的rollback segments .truncate 是DDL操作,不产生rollback,速度快一些. Truncate table does not generate rollback information and redo records so it is much faster than delete. In default, it dea...
[Forum FAQ] How to fix the Error “The column XX cannot be processed because more than one code page (65001 and 1252) are specified for it” in SSIS? [Microsoft][ODBC SQL Server Driver][DBNETLIB] General Network error. Check your network documentation [OLE DB Destination [16]] Error: ...
Control'." While assigning stackpannel childrens(Controls) in to the Control i am getting this error (C# WPF)How could I hide a control (ex. a textbox) and display it again (Element Name) is not supported in a windows presentation foundation (WPF) project. (MVVM) - How To Bind to ...
just like when aDELETEstatement is executed, the transaction log stores the information that is required to recover the transaction; the difference is that the transaction log doesn’t store information on each individual row that has been truncated and thus doesn’t support point-in-time recovery...
Since TRUNCATE is equivalent to DROP + CREATE, I would say that this should be treated as a DDL and, in other words, replicated as a statement. Note that there is a difference in behavior between DELETE FROM with no where condition and TRUNCATE in this case: DELETE FROM will remove all...
SQL Copy As you can see below, we got the records back. So we can rollback DELETE as well TRUNCATE if the commands are started inside a transaction and there is no difference between DELETE and TRUNCATE if we are talking about rollback. Try it on your own and let me know if you exp...
If you don’t know how SQL Server works you won’t know how to handle certain situations where expertise is needed. So I often start with a question like“What is the difference between Delete and Truncate?”, which I think is a very basic concept and every DBA must know. To my surpr...
The SQL truncate command is straightforward; you just need to pass the table name to remove all rows. 1 TRUNCATETABLE[SQLShackDemo].[dbo].[Employee]; Example 6: SQL Truncate command and identity values In the previous example 3, we explored delete command with the identity values. Delete do...