truncate file

In the operation of the database, often encounter delete drop truncate operations, then how to grasp their usage and differences?For example, when database space is full, it has grown to the maximum value of a single storage file in storage space

MySQL data recovery case after truncate misoperation, mysqltruncate The actual online scenario is complicated. At that time, the truncate and delete operations were involved. It was confirmed that more than 70 thousand rows of data were lost. when

As we all know, TRUNCATE table can be used to delete the contents of the entire table, which is not the same as when the delete is behind the where condition. But beyond that, do we know that there are other differences between them? In this chapter

Truncate table t_test: Message 4711, level 16, status 1, 1st rows The table 't_ test' cannot be truncated because it has been published for replication. Error table forwarding from http://technet.microsoft.com/zh-cn/library/cc645613 (V = SQL .105).

In this article, let's look at the python truncatemethod, before entering the article we may not know Truncate usageWhat, but in this article we will use Truncate statement InstanceTo let you know about the Truncate method in today's

The actual line of the scene is more complex, then involved in the TRUNCATE, delete two operations, confirmed lost data almost 70,000 lines, and so on stop, almost a total of more than 10,000 rows of data written. Here for a simple explanation, just

Usage: deletefromtablename; truncatetabletablename; similarities: delete and truncate can clear table data. Differences: delete statements are used for tables and views. delete can delete a single piece of data; delete is a DML language. truncate

Original: The difference between delete and truncateIn general, data that is not used is deleted by row, and deletion is usually done with the delete and TRUNCATE commands. For conditionally deleted, basically will use delete, of course, there is

I. first introduce the basic usage of file, seek, and truncate: Seek (offset, where): Where = 0 moves from the starting position, 1 moves from the current position, and 2 moves from the ending position. When there is a line change, it will be

Truncate table requires the drop table permission, which completely clears a table. Logically, the truncate table is the same as the delete table, or the drop table + create table is the same. Using truncate table to delete full table data is faster