Oracle

Usage of row_number () over (partition by xxx order by xxx) in Oracle row_number () over (partition by a order by B) in www.2cto.com, the query results are grouped by the field (partition), and then sorted by the B field in the Group. As for asc or

Oracle trigger 3-DDL trigger Oracle trigger 2-DML trigger http://www.bkjia.com/database/201304/200549.html DDL trigger, which is triggered when a DDL statement is executed. Schema triggers and database triggers are divided according to the scope of

When you use the nid command to modify the Database name and dbid, you will inevitably encounter the situation where you need to modify the dbname and dbid, for example, restoring the database to the same machine is one of them. However, dbname and

Oracle to mysql migration steps and various precautions recently a company project needs to migrate the database once, from oracle to mysql, there is little information on the Internet, I will summarize some of the problems I encountered in this

Oracle left join... ON... AND... and left join... ON... WHERE... difference about left join... on... and... and left join... on... the difference between where is that many online statements are about left join... on... and ..., and conditions only

[Oracle] Transparent Data Encryption technology-TDE the full name of Oracle TDE is Transparent Data Encryption. It supports column-based Encryption from 10gr2 and table space-based Encryption from 11 GB. It is transparent to applications and easy to

The method for creating an auto-increment field in Oracle-A Brief Introduction to oracle sequence first assumes that there is such a table: create table S_Depart ( DepartId INT not null, DepartName

In SQL, PL/SQL functions are used. Many oracle database developers prefer PL/SQL functions and storage to simplify the code. for example, select empno, ENAME, DNAME, loc from emp, dept where emp. DEPTNO = DEPT. DEPTNO; for such an SQL statement,

Yum-y install oracle-rdbms-server-11gR2-preinstall this method oel6.4 experiment through #!/etc/bash  #1. Load the DVD installation disk. Note that the drive path can be df-lh and/dev/sr0 is displayed in my

The result of the Oracle 11g RAC crs_stat command shows that the crs_stat command in Oracle 11g RAC has many new resource types compared with the previous version. By default, the use of crs_stat-t to view resources is a large piece of data that

[Oracle] Data Pump detailed tutorial (1)-Overview starting from 10 Gb, Oracle provides more efficient Data Pump (expdp/impdp) for Data import and export, old exp/imp can be used, but it is not recommended. Note: expdp/impdp AND exp/imp are

[Oracle]-[ORA-01031]-create a view based on the data dictionary table without permission issue execution SQL> create or replace view redo_size as 2 select name, value from v$statname n, v$sesstat t, v$session s 3 where s.audsid =

Configuring the Oracle 11g Data Guard (logical standby) Oracle Data Guard logical standby database based on the same host uses a backup of the master database to first create a physical standby database, then convert it to a logical standby database.

Oracle ORA-03137: TTC protocol internal error: [12333] an error occurs when the analytics program connects to the database through JDBC and reports ORA-03137 [12333. The JDBC driver version of the current program: ojdbc16-11.2.0.1.0.jar database

This article will introduce the usage of the oracle/plsql case Condition Statement, which is similar to mysql mssql. If you need to learn more, let's take a look. Statement syntax The Code is as follows: Copy code CASE

In many databases, there is a simple syntax such as loop, which is no exception in oracle. Let's take a look at the nested loop in El and explain it out of the internal loop body with instance 2. The Code is as follows: Copy code

First download from the Internet: 　　[oracle@jumper]$ wget http://www.realvnc.com/dist/vnc-4.0-x86_linux.tar.gz--10:34:32--　http://www.realvnc.com/dist/vnc-4.0-x86_linux.tar.gz=> `vnc-4.0-x86_linux.tar.gz'Resolving www.realvnc.com... done.Connecting

View the system permissions of the current userCopy codeThe Code is as follows:Select * from user_sys_privs; System permission granted by the system administrator ----- sys userCopy codeThe Code is as follows:Create user lisi identified by 123456 //

Environment: RHEL 5.4x86, oracle 11.21. Set Environment VariablesEdit in/home/oracle#. Bash_profile# Get the aliases and functionsIf [-f ~ /. Bashrc]; then.~ /. BashrcFi# User specific environment and startup programs#11g R2Export ORACLE_HOME

I do not know how to deal with MySQL today, but I do not know how to obtain the inserted id after inserting the record. After reading the document, I found the select last_insert_id () and executed this query after inserting it, you can get the auto-