truncate in teradata

Truncate usage in oracle and oracletruncate usageTruncate in oracleSyntax: truncate table;You can use the truncate Statement (DDL language) to delete all records in a table. The truncate statement is usually much faster to delete data than to delete data. This is because no rollback information is generated when the

Truncate, delete without WHERE clause, and drop both delete table data. Differences: 1. differentiate from the deleted content:Truncate and delete: delete only data. Do not delete the table structure (Definition) The drop statement deletes the table structure, constrain, trigger, and index. Stored Procedures/functions that depend on the table are retained, but it changes to the invalid status. 2. Statement types:The delete statement is DML, which i

Different points: 1. Truncate and delete Delete only the data do not delete the structure of the table (definition) The DROP statement deletes the table's structure-dependent constraints (constrain), triggers (trigger), indexes (index); That depends on the table. Stored procedures/functions are preserved, but become invalid states. The 2.delete statement is DML, which is placed in the rollback segement, which takes effect after the transaction is com

The contents of an empty MYSQLL table are common in two ways: a delete and a truncate. Delete statements without a where parameter can delete all content in the MySQL table, and you can also empty the MySQL table with TRUNCATE table. Efficiency truncate faster than delete, but truncate deleted after the MySQL log does

TRUNCATE TABLE Name Nameis the name of the table that you want to truncate or the name of the table for which you want to delete all rows.TRUNCATE 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 and uses less system and transaction log resources.The DELET

Same point: Truncate and delete with no WHERE clause, and drop deletes data in the table Different points: 1. Truncate and delete Delete only the data do not delete the structure of the table (definition) The DROP statement deletes the table's structure-dependent constraints (constrain), triggers (trigger), indexes (index), and the stored procedures/functions that depend on the table remain, but become

First, syntax in SQL1. Thedrop 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= ' Test 'Second, Drop,truncate,delete difference1, Drop (delete table): Delete content and definition, free space. Simply put the whole table out . It is not possible to add data in the future u

Tags: import use hang share picture DMI lag ref page ToolWhen TRUNCATE table occurs, how to recover, I believe most people will choose to restore the backup to TRUNCATE table before, and then re-import the data into the formal table.So in SQL Server is not really only this method, of course, this is the content of this article will be introduced, the precondition is the SQL Server full recovery model (bulk-

Usage of drop, truncate, and delete statements in sqlserver, sqlservertruncate Although it is not recommended that you use commands to delete items in database tables, these delete commands are useful. When talking about the keywords used to delete table data, you may remember that the most important thing is delete. However, we develop databases and read database data, which is less useful to the other two brothers. It is easy to understand that the

Difference between truncate table and delete, truncatetable 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 delet

Notes on truncate table --- The following is a summary of the quotations of itpub's predecessors. After truncate table, oracle recycles the index of the table and its table to the initial size, that is, the size of the initial allocated segments.Truncate and drop are both ddl statements, and the operation takes effect immediately. The original data is not stored in rollback segment and cannot be rolled bac

Delete all rows in the table without recording the delete operation of a single row. The TRUNCATETABLE function is the same as the DELETE statement without a WHERE clause. However, the TRUNCATETABLE is faster and less system resources and transaction log resources are used. Delete all rows in the table without recording the delete operation of a single row. The truncate table function is the same as the DELETE statement without a WHERE clause. However

Smarty's usage of truncate {$ d. title | truncate: 25... the display is just a truncate. it seems that the numbers, various characters, and Chinese characters are treated as one character, but after all, two digits occupy the space of a Chinese character, and there is a "... ", occupies three more characters. This leads to uneven levels after titles are listed. T

Premise:-Standby database must is in Flashback database mode. -time at which Drop/truncate/delete Table happened should is within the db_flashback_retention_target and all the Flashba CK and archive logs should be availableRetrieve the wrong drop/truncate/delete from the main library on the Dataguard Repository table reference article: How to Recover from A drop/trunca