truncate number

In general, we can use the TRUNCATE or DELETE statement to DELETE records in the table. The TRUNCATE statement is usually more efficient, but you need to pay attention to it. TRUNCATE is a DDL statement, which means that Oracle will automatically

A, DELETE statement (1) Conditional deletion Syntax format: delete [from] table_name [where condition]; For example: Delete data from the users Table of UserID ' 001 ': Delete from users where userid= ' 001 '; (2) Unconditionally delete the

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

You need to understand the Delete statement of MySQL. MySQL provides the delete and truncate statements to delete data.Definition of the delete statement:Most of the children who often deal with databases use delete statements to delete data. Now

YSQL provides the delete and truncate statements to delete data. Delete statement Definition: delete statements are usually used by children who often deal with databases to delete data. Now let's take a look at the definition of the delete

The difference between truncate and delete and the basic concept of DDL,DML,DCL,TCL Understand DDL,DML,DCL,TCL Basic Concepts First For SQL languages, there are two components: DML (Data Manipulation language): They are select, UPDATE,

YSQL provides the delete and truncate statements to delete data. Definition of the delete statement: Most of the children who often deal with databases use delete statements to delete data. Now let's take a look at the definition of the delete

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

Comparison between truncate and delete operations Operation Rollback High waterline Space Efficiency Truncate No Decrease Reclaim Fast Delete Yes Unchanged Do not recycle Slow

Explain the differences between DELETE, TRUNCATE, and DROP in OraclePrefaceIn 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