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 del
In contrast to theTRUNCATEstatement,theDELETEstatement in SQL is used to remove specific rows from a table based on specified conditions. WhileTRUNCATEremoves all rows from a table,DELETEoffers more flexibility by allowing the removal of only those rows that meet certain criteria. 3.1. Syntax of ...
A DIFFERENCE BETWEEN DELETE AND TRUNCATE IN SQLBrijesh PatelJigisha TrivediIJARIIE
Difference Between Where and Having Clause in SQL Difference Between Group By and Order By in SQL Difference Between Fact Table and Dimension Table Difference Between Left, Right and Full Outer Join Difference Between DELETE and TRUNCATE in SQL...
Difference Between Where and Having Clause in SQL Difference Between Group By and Order By in SQL Difference Between Fact Table and Dimension Table Difference Between Left, Right and Full Outer Join Difference Between DELETE and TRUNCATE in SQL...
Automated Conversion from T-SQL to ANSI SQL? Automatic Truncate Long Strings while inserting data. Automatically import the CSV files from a Folder Automatically UpperCase ALL MS SQL Server Keywords AutoNumber in T-SQL Select Statement AVG ->Operand data type varchar is invalid for avg operator av...
How do I query the time difference between two time points? What are the types of SQL languages? What is the function of a trigger? What are the four characteristics of correctly executing database transactions? What are the differences between the DROP, TRUNCATE, and DELETE methods in GaussDB...
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HomeOracle FAQ Knowledge BaseSQL and PL/SQLSQL Difference between TRUNCATE, DELETE and DROP commands Submitted by admin on Sat, 2006-02-11 02:07 DELETE The DELETE command is used to remove rows from a table. A WHERE clause can be used to only remove some rows. If no WHERE condition is...
Know Difference between Oracle Reserved Words and Keywords,与C和JAVA体系类似,Oracle中存在一些保留词(ReservedWords)或关键词(Keywords)以及少量的命名空间(Namespace)。保留词(ReservedWords)是优先级最高的词汇,在Oracle中这些词都有着特殊的意义。所以这些词不允