teradata truncate table

Original post address: http://hi.baidu.com/liyanlin84/blog/item/eb306616cdb51e1c972b4389.html Delete all data in the table, and you want to automatically increase the column from 1! Use truncate table tblname Truncate is a SQL statement used to delete data table content.

[Reprinted] the difference between the delete table and the truncate table is tabletruncate. The general syntax format for deleting data using the delete statement: Delete [from] {Table_name, view_name} [Where] Delete all row data in the XS table Delete XS After the execution, we found that the data in the XS

Use the truncate TABLE statement to delete table data To delete all records in a large table, run the truncate command to release The data block tablespace used. This operation cannot be rolled back. Syntax format: Truncate

Similarities and differences of Truncate,delete,dropNote: This digest is from Oracle Technical user discussion GroupSimilarities and differences of Truncate,delete,dropNote that the delete here is the DELETE statement without the WHERE clauseSame point: Truncate and delete with no WHERE clause, and drop deletes data in the tableDifferent points:1.

When deleting data in a table with a parent-child relationship, we all know that you must delete the child table before deleting the data in the parent table. Alternatively, you must cancel the foreign key before deleting the data. Yesterday, we used to delete the child table first, then the parent

Tags: Blockchain blog garbage operation efficiency is the from mode partRecently in the blockchain to make a token of the app, involving the database table in the deletion of records, if a strip delete that is really tiring. Consider directly entering MySQL directly to empty the table or delete the data in the table.This article records the difference between the 2 modes of operation, the target object is t

the Sys login, give the table Z2 to dwetl permissions[Email protected] ~]$ rlwrap sqlplus/as sysdba sql*plus:Release 11.2. 0. 4. 0Production onTue May - the: -: - .Copyright (c)1982, -, Oracle. AllRights reserved. Connected to: Oracle Database OneG Enterprise EditionRelease 11.2. 0. 4. 0- -bitProduction withThe partitioning, OLAP, Data Mining andReal Application Testing Options sql> GrantSelect onZ2 toDwetl; Grant succeeded. Sql> 6, again to Dwet

Label:Empty all content from a MySQL table Delete from table name ; TRUNCATE table name ; The DELETE statement without the Where parameter removes everything from the MySQL table, and you can also empty all the contents of the MySQL

I used to delete massive data in the entire table in SQL Server (million data records) and deleted it with delete for a long time. When I was seen by my predecessors, I was so stupid: "Use truncate table ". Sorry, I was too easy to learn. I went back to check the information and found that truncate

Truncate Table , the difference between delete and drop tableTRUNCATE table is functionally the same as a DELETE statement without a WHERE clause: Both delete all rows in the table. However, TRUNCATE TABLE is faster than DELETE an

Truncate table clears the TABLE content. TRUNCATE table deletes all rows in the TABLE, but does not record the deletion of a single row. The truncate

Truncate table Delete all rows in the table without recording the delete operation of a single row.Syntax Truncate tableNameParameters Name Is the name of the table to be truncated or the name of the table to delete all its ro

Can rename table but can not truncate table, renametruncateA table cannot be truncate but can be rename. This sounds strange at first. The process is simulated below.Three sessions:Session1 performs the truncate and rename operati

Oracle large table cleanup truncate... reusestorage Recently, a large table needs to be cleaned up, which requires no impact on performance. In MySQL, we can minimize I/O by using coreutils and hard links. Oracle can also minimize I/O by recycling space in batches. What is the problem.1. truncate

The Truncate statement is a distinctive statement in the OracleSQL system. The direct effect of Truncate is to clean up data in the data table. It is a typical DDL statement at a deeper level. The Truncate statement is a distinctive one in the Oracle SQL System. The direct effect of

right! Removed very violently, as the eldest was well deserved Dick-----truncate. Infested occasions: TRUNCATE TABLE TB Trick: delete content, free space without deleting the definition. Unlike the drop, he just clears the table data, and he's more gentle. It is also a class, he only removes all the st

(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

To delete data from a table: TRUNCATE TABLE wp_comments; Delete * from wp_comments; The difference between the two methods:Where the table in the truncate operation can be omitted, the * in the delete operation can be omitted. Both of these are emptying the data i

Oracle Update Data Tip Custom "ORA-20010: Cannot drop/truncate the table" errorJava.sql.batchupdateexception:ora-00604:error occurred at recursive SQL Level 2ORA-20010: The table cannot be drop/truncate.Ora-06512:at Line 12Org.springframework.jdbc.UncategorizedSQLException:Hibernate operation:could not execute JDBC batch update; Uncategorized SQLException for SQL

Truncate table The truncate table function is the same as the delete statement without the WHERE clause: both delete all rows in the table. However, truncate table is faster than d