truncate in teradata

GrammarDelete from AATRUNCATE TABLE AADifference1.delete from the back can write the condition, truncate not.2.delete from records are deleted, each row of records will go into the log, and truncate delete the entire page at once, so the day to the inside only record page release, in short, delete from the update log, truncate basic No, the use of less transactio

Truncate and DELETE statements in OracleFirst of all, truncate command:Syntax: TRUNCATE table table;The data in the table is emptied and the storage space is freed.It is automatically committed after it is run, including other uncommitted sessions, so once emptied cannot be rolled back.Only the creator of the table or any other user (such as a DBA) who has permis

Label: GrammarDelete from AATRUNCATE TABLE AA difference 1.delete from the back can write the condition, truncate not. 2.delete from records are deleted, each row of records will go into the log, and truncate delete the entire page at once, so the day to the inside only record page release, in short, delete from the update log, truncate basic No, the use of less

SQL truncate, delete and drop differencesSame point:1.truncate and delete without a WHERE clause, and drop deletes the data in the table.2.drop, truncate are DDL statements (data definition language) that are automatically committed after execution.Different points:1. Truncate and delete only delete data without deleti

Tags: tuple text parameter log DML commit reset Action constThis article follows: The method of deleting data in a table is delete,truncate, where TRUNCATE TABLE is used to delete all rows in the table without logging a single row delete operation. TRUNCATE table is similar to a DELETE statement without a WHERE clause; However,

Tags: line cannot ros from San Space overflow table name antThe QL truncate TABLE command deletes the complete data from an existing table. You can also use the drop table command to delete the complete table, but it removes the complete table structure from the database and, if you want, you can store some data again and write it back to the table.GrammarThe basic syntax for TRUNCATE TABLE is as follows:

(1) The DELETE statement performs the deletion by deleting one row from the table at a time and saving the row's delete operation as a transaction record in the log for the rollback operation. TRUNCATE table deletes all the data from the table at once and does not record the individual deletion records in the log, and deleting rows is not recoverable. Delete triggers related to the table are not activated during the removal process. Execution speed is

Explain the similarities and differences between drop, delete, and truncate in SQL, First: Similarities: Truncate, delete without where clause, and drop both delete table data. Second: Differences: 1. Truncate and delete: only delete data. Do not delete the table structure (Definition)The drop statement will delete the constraints, triggers, and indexes that the

Delete data in MySQL -- delete and truncate ??? There are two ways to DELETE data in MySQL: one is the DELETE statement and the other is the TRUNCATETABLE statement .???? The WHERE clause can be used to select the record to be deleted .??? TRUNCATETABLE will delete all records in the table. Therefore, the DELETE statement is more Delete data in MySQL -- delete and truncate? ? ? There are two ways to DELETE

The similarities between the three commands: truncate and delete without the where clause, and drop will delete the data in the table. The difference is that truncate will clear the table data table and set the id to start from 1, delete: only records are deleted. drop can be used to delete tables or databases and release all the space occupied by tables. Differences:1.

In the SQL statement ---- delete table data drop, truncate, and delete usage, droptruncate Reprinted from: http://www.cnblogs.com/1312mn/p/4422396.html I. SQL syntax 1. drop table name eg: drop table dbo. Sys_Test2. truncate table name eg: truncate table dbo. Sys_Test3. delete from table name where column name = value eg: delete from dbo. Sys_Test where test = '

Label: style HTTP Io color OS ar SP File 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 than deleting. The truncate

Delete a table structure, error, may be the reason for the lock table. done! with truncate instructions Deletes all rows in a table without recording a single row delete operation. Grammar TRUNCATE TABLE name parameter Name is the name of the table that you want to truncate or the name of the table for which you want to delete all rows. Notes

The difference between a MySQL DELETE statement and a TRUNCATE TABLE statement 2010-10-08 16:05 Anonymous InternetSize:T|TIn the MySQL database, both the DELETE statement and the TRUNCATE TABLE statement can be used to delete data, but there are differences between the two statements, which are described below.AD: Dry Goods come, don't wait! WOT2015 Beijing Station lecture ppt open download!The MySQL DELET

Explain the differences between DELETE, TRUNCATE, and DROP in Oracle. oracletruncatePrefaceIn the past, when I was working on a project, I seldom paid attention to the details in the knowledge point. Today, I have the opportunity to differentiate several common functions in Oracle.Syntax Delete from table_name Truncate table table_name Drop table table_name Differences A condition can be written af

the difference between drop, truncate, and deleteOriginal November 22, 2015 19:30:21 the difference between drop, truncate, and delete (1) The DELETE statement performs a deletion by deleting a row from the table and saving the row's delete operation as a transaction record in the log for rollback operations. TRUNCATE table deletes all the data from the table on

Tags: resource undo Settings LLB nbsp Table Manual Delete StoreThe difference between drop, truncate, and delete in MySQL (1) The DELETE statement performs the deletion by deleting one row from the table at a time and saving the row's delete operation as a transaction record in the log for the rollback operation. TRUNCATE table deletes all the data from the table at once and does not record the individual d

The difference between delete and truncate: delete generates rollback. If you delete a table with a large amount of data, it will take up a lot of rollback segments. truncate is a DDL operation and does not generate rollback, which is faster. Oracle Clearing table SQL statement and difference between truncate and delete