Oracle

Environment: Win7 64-bit, wampServer2.2, php5.5.20, Oracle 11gR2 Materials: Ci.dll, Oraociei11.dll, Orannzsbb11.dll are all from Oralce client11gr2_x64 copy back. Put directly under the Wamp->apapched->bin; then wamp->php->php extensions, tick

Transferred from: http://blog.itpub.net/25322446/viewspace-767505 Note: Notes summarize several update methods and the range of methods that have been encountered at work.1. single-table updateScenario: Use standard update syntax to perform stable

Installation of Oracle XE under Linux system:1. Physical hardware requirements, CPU requirements are not high, the general purchase of the cloud server is not a problem, memory minimum 1G RAM, hard disk 16GB minimum.　　grep memtotal/proc/meminfo

Create TableTB ([ID] int,[name] varchar(2))Insert intoTBSelect 1,'AA' Union AllSelect 2,'BB' Union AllSelect 1,'cc' Union AllSelect 3,'DD' Union AllSelect 2,'ee' Select * fromTB--EnquirySelectID, name=Stuff((Select ','+Name fromTbwhereId=T.id

To connect Oracle using MYECLIPSE encoding in a DRP project, first copy the driver Ojdbc14.jar to the corresponding directory, and then write the connection code in the corresponding package.Package Com.bjpowernode.drp.util;import java.sql.*;p ublic

The database has the following table structure:User_info (user_id number primary key, user_name VARCHAR2 (+) not NULL, User_age VARCHAR 2 (+), create_date date, create_order number)Now there are 1 million records that require each 1000 records to be

1) installation files to be copied to local file system execution2) Although I do not know what LIBXMU is, but after installation, the associated package installed a lot, feel very worryYum Install libxmu.i6863) If you can't find a package, it's a

these days of work basically did not compare the new technical point, is the repeated changes in demand, modify Bug ... Of course, it's time to think about the importance of demand analysis in a huge project, as well as the importance of the

Today in the project development, in order to test the project SQL execution effect, with Plsql developer execution, no commit to continue to tap the code, and then re-use Plsql Developer, may be network reasons, Plsql Developer disconnected from

1. Intercepting stringsThe Oracle intercept string uses a function substr, with the parameters: substr (string, start position, intercept length),For example: String 123,112, you need to remove the trailing comma, then the Intercept function is as

This section will discuss all of a sudden query for more complex applications, mainly to simplify SQL, improve performance from the side, of course. There are many more places to improve performance. Today I listened to a lecture on Oracle's

--cursor cursor_name is select_statement--For loop cursors--(1) Defining Cursors--(2) Defining a cursor variable--(3) using the For loop to use this cursorDeclare --type definition cursorC_job is SelectEmpno,ename,job,sal

Check the database-level parameter settingsSELECT * from Nls_database_parameters;Check the parameter settings at the instance levelSELECT * FROM Nls_instance_parametersCheck the session-level parameter settingsSELECT * FROM

Application: Field name of all data tables contained in the query database for all data in a table with a known field nameHow to: Specify the field name, User database table, which can execute the following queryThe--oracle build query includes the

One is to add data files to the tablespace, and the following SQL statements are performed under the database administrator Sysman User: Create tablespace lzs datafile ' d:\ORACLE\PRODUCT\10.2.0\ORADATA\ orcl\lzs.dbf ' size 2048m;create tablespace

12C supports creating a sequence first, and then specifying the sequence as the default expression for the value of a column.and "identity column" have the following different points:• No limit on the number of columnssequence must be defined before

Prediction and offset of OracleEBSMRP ModuleThe Oracle ebs mrp module defines the basic concepts of prediction and subtraction based on the original prediction. It uses the planned sales order to reduce the corresponding prediction quantity to get

Explain how to use various control statements in Oracle databases, and explain how to use oracle The use of various control statements in the Oracle database is what we will introduce in this article, including some logical control statements, the

Unable to log on to the ORACLE database consoleThis error is reported to me when I log on to EM. Code d 'erreur: ssl_error_weak_server_cert_key You only need to disable the SSL of EM. [Oracle @ ace-PROD1 ~] $ Emctl unsecure dbconsole Oracle

Oracle comma segmentation, column-to-Row, Row-to-column, oracle comma SQL code column-to-row SelectREGEXP_SUBSTR (. rolecode, '[^,] +', 1, l) rolecodefrom (select 'a, aa, aaa' rolecode from dual), (select level l from dual connect by level   Or