Oracle

Feature Description:The first is a non-field aggregation , which is then aggregated after the fields are grouped from left to rightTo create a table:1 Create Table score 2 (3 Int , 4 Varchar2 (), 5 varchar2 (), 6 Int 7 );View CodeInsert test

1 , change the client character set: run regedit from the Windows Run menu, modify the registryStart, Run, Rededit Under registry Editor-> HKEY_LOCAL_MACHINE-Software->oracle->key_xe->right WINDOW DOUBLE CLICK Nls_la NG-and change-VALUE to "American_

Create or Replace procedure stored procedure name (Parameter 1 in VARCHAR2,Parameter 2 in VARCHAR2,Parameter 3 in number,Parameter 4 out number)IsVariable 1 varchar2 (200);Variable 2 varchar2 (10);Variable 3 number;BeginVariable 3: = Parameter 3;

A Installing OracleSTEP1 Download the Oracle compressed package and unzip it to the same folderSTEP2 Double-click setup.exe to installSTEP3: Enter the following interface configuration:Do not fill in the mailbox, remove the updateIn addition to

A Installing OracleStep1 Download The Oracle compressed package and unzip it to the same folder STEP2 Double-click setup.exe to install STEP3: Enter the following interface configuration:Do not fill in the mailbox, remove the updateIn addition to

1. Export Oracle_sidExport ORACLE_SID=N12. Create a

The database that the colleague retrieved when the operation is Oracle 10g, before delete mode is delete do not know trancateThe SCN (System change number), which is fully spelled in English, is: System changed, which is a very important data

Receive a SQL for development submission, slow down in high concurrency, and see if you can do some optimizations:The SQL is 1 tables to another table doing a left join, first performing a look below,Sql> Select

Article turned from: http://blog.csdn.net/wyzxg/article/details/5869543 ALTER DATABASE open resetlogs This command I think everyone is very familiar with, then have you ever thought about this resetlogs option why use? When do you use it?What is its

There are four main steps to using an explicit cursor:declaring/Defining CursorsOpen cursorReading dataClose CursorsCase conditional expressionWhen conditional expression result 1 ThenStatement 1When conditional expression Result 2 ThenStatement 2...

Http://www.linuxidc.com/Linux/2011-11/47383p2.htmWhat is the Oracle character setThe Oracle character set is a collection of symbols that interpret a byte of data, have a size, and have a mutual containment relationship. ORACLE's support for

The log information here refers to the log information at the command line for command operation.Oracle1. Import Export: Imp omjx/[email protected] full=y file= full path \xf.dmp log=e:\xf.log2. Non-Import Export command3. Other commandsMySQL

General Installation1, install the necessary rpmYum install compat-db compat-libstdc++ control-center gcc gcc-c++ glibc glibc-common gnome-libs libstdc++ libstdc++-devel Make Pdksh sysstat xscreensaver setarch libxp libaio libxp-devel libgcc

Oracle External table details (reprinted), oracle details(When creating an external table, pay attention to the issue of creating directory access permissions, and irrelevant characters such as no space in the directory path format, that is, it must

Oracle processes the attendance time, splits the SQL statement of the attendance period, and oraclesql I have been using mysql databases for cloud projects recently, but I haven't been in touch with oracle for some time. Yesterday, a friend asked me

CACHE features of the KEEP pool The use of the KEEP pool is very simple. If the value of DB_KEEP_CACHE_SIZE is greater than 0, you can set the BUFFER_POOL parameter of other objects to KEEP. Alter table t storage (BUFFER_POOL KEEP ); Select count (*)

Oracle Database startup problems caused by a loss of the registry project in the Windows registry. Oracle Database startup problems caused by a loss of the registry project in the Windows registry. Environment Description:1. windows 2008 operating

Create dblink and scheduled tasks in oracle Recently, we are working on a task, specifically, to regularly insert data to the middle table of another user's database. The first thing we need to do is create an oracle dblink to the other database to

A small problem with the auto-scaling feature of Oracle11g partitions It is very convenient to use the automatic partition Extension function in Oracle 11g, but it also brings about a problem, that is, after the export and import, the table creation

Data cleansing Note: determines whether it is a date function Background] When extracting data from a certain date, it is found that a large amount of non-date data exists, and spam data (non-date data) needs to be cleaned ).   [Solution] Write a