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Auto increment of ID fields in the SQL _Oracle table and SQL _oracle Field Original Works are from the blog of "Deep Blue blog". You are welcome to reprint them. Please note the following source when reprinting them. Otherwise, you will be held

Oracle online extended partitions In the Oracle Partition Table operation, when a partition already has the largest partition, how can we expand the partition again? The simple method is to delete the maximum partition first, then add the required

Oracle date functions:There are many date functions in oracle, such:1. add_months () is used to increase or decrease the number of months from a date value.Date_value: = add_months (date_value, number_of_months)Example:SQL> select add_months

Insert statement plus/* + APPEND */impact analysis on the system of a single commit in a loop, insertappend1./* + APPEND */usage of the prompt /* + APPEND */indicates that an INSERT statement exclusive hint is used to increase the insert speed and

Today, we will briefly summarize the usage of cursor in PL/SQL. I believe many DBAs who are engaged in development or maintenance have encountered similar face-to-face problems when looking for a job: Please briefly describe the type of the cursor,

Although we often use temporary tables in daily database development and maintenance, we may still have a poor understanding of temporary tables. I found a good post on the Internet today to share with you.   Source:

In Oracle8i or later versions, you can create the following two types of temporary tables: 1. Session-Specific temporary tables CREATE GLOBAL Temporary ()On COMMIT PRESERVE ROWS; 2. Transaction-specific temporary tables CREATE GLOBAL Temporary

Oracle Temporary table Knowledge In Oracle, temporary tables are divided into sessions, transaction two, and the session-level temporary table data exists throughout the sessions until the end of sessions; Temporary table data at the transaction

Original works, from the "Blue Blog" blog, Welcome to reprint, please be sure to indicate the following sources, otherwise, the legal responsibility to pursue copyright.Deep Blue Blog: http://blog.csdn.net/huangyanlong/article/details/43937701Goal:

First, query statementsGet the first 10 records of dataOracleSELECT * from tab where rownum SQL Server:Select Top Ten * from tabMysql:SELECT * from tab limit 10SELECT * FROM table name limit m,n; Starting with M, take N barSecond, update the

Database backup and RecoveryExperimental purposeMaster backup methods commonly used in Oracle databases.Experimental content(1) Methods of data backupExperimental steps1. Database backup1) Oracle Physical backup and recovery.0. Preparatory work:(1)

A series of common Oracle operations 1. create an Oracle tablespace: Example: create tablespace my_space datefile 'd: \ ruanjian \ app \ Administrator \ oradata \ oracle \ my_space.dbf' size 20 M; 2. delete Oracle tablespace: Example: drop

Oracle11g new feature system partition table A new feature in 11g is the Partition Table of the system. Here is an experiment: SQL> select * from v $

Differences between Oracle temporary tables and SQL Server temporary tables: The process of creating a temporary table in the Oracle database and the difference between the temporary table and the SQL Server are described in this article, next,

Today, we will briefly summarize the usage of cursor in PL/SQL. I believe many DBAs who are engaged in development or maintenance have encountered similar face-to-face problems when looking for a job: Please briefly describe the type of the cursor,

The previous article talked about the daily maintenance commands of Linux and the daily maintenance commands of oracle. I believe that Oracle databases must be maintained more or less. Should I import and export Oracle databases? (Oh, you said you

Reference 1. Explicit cursor Explicit is relative to implicit cursor, that is, there is a clear declared cursor. The declaration of an explicit cursor is similar to the following (for detailed syntax, refer to PLSQL ref DOC ): Cursor

Oracle 11g new feature system partition table A new feature in Oracle 11g is the Partition Table of the system. Here is an experiment: SQL> select * from v $ version;BANNER------------------------------------------------------------------------------

Oracle online extended partitions and oracle online extended partitions In the Partition Table operation, when a partition already has the largest partition, how can we expand the partition again? The simple method is to delete the maximum partition

Turn the notes of a great God.Causes the table's execution plan to do a full table scan:u SQL predicate column does not have a corresponding indexthe U predicate column has a corresponding index, but the execution plan is not usedOracle does not use