Oracle

Example:Select substr (Largetext,instr (Largetext, ' a ', ") +11,instr (Largetext, ' B ',)-instr (Largetext, ' a '," -11) "as CutstrFrom table name where id= ' 123456789 'and InStr (Largetext, ' B ', <>0;)1.instrReturns the position of the string to

Install Oracle jdk6,7 or 8 in Ubuntu 14.04.Preparing: Adding Add-apt-repository ToolsInstall python-software-properties#apt-get Install Software-properties-commonFirst step: Add PPA repository to the system#add-apt-repository Ppa:webupd8team/java

SELECT * from(SELECTSql_text, sql_id, Cpu_time fromV$sqlORDER byCpu_timeDESC) WHERERownum Ten ORDER byRownumASC;SELECT * from(SELECTSql_text, sql_id, Cpu_time fromV$sqlareaORDER byCpu_timeDESC) WHERERownum Ten ORDERByrownumASC;These 2

24-Hour Representation method: To_date ('2004- .- - at: -: -', ' yyyy-Mm-DD Hh24:mi:ss ') 12 Hour Representation Method: To_date ('2004- .- - at: -: -', ' yyyy-Mm-dd Hh:mi:ss ')Insert intoSettle_whiteValues(' the','S7551581', To_date ('2016-04-12

Description: Usually very little contact with big data paging, today is interested in the database insert 10 million data to test, after the query related information to get the following description:The author has a millions record in the work of

Before 11g, when the data volume of the table was changed beyond 10% of the total amount of data, the statistics were collected at the end of the night. How to infer 10%. Previous posts have been researched: the principles and experiments of

The beautiful and capable virtuous daughter-in-law in SQL statements--merge into(2010-02-02 17:09:45) tags:   Merge into Pk matched Then update And associating Same name field update condition

If you use a 11g client and then connect to the 10g Oracle via ODBC (remote connection), the listener fails to start (ora-12541:tns: No listener)At this point, you need to D:\instantclient_11_2 the Tnsnames.ora file in the client directory. In this

See if Linux has its own JDK, if openjdk, uninstall 1 java-version 1 rpm-qa | grep -e '^open[jre|jdk]|j[re|dk]' Uninstalling OPENJDK 1 su Root 2 3 Yum -y remove Java java-1.7. 0-openjdk Download Oracle JDK 1 wget "

This section summarizes: This section describes the use of Oracle's own jobs to enable Oracle custom timed execution tasks.1. IntroductionCustom scheduled tasks are performed in two forms, system level and database level,From the operating system

: New--For a reference to the latest column value;: Old--for a reference to a previous column value; These two variables exist only if the keyword "for each ROW" is used. And the UPDATE statement has two, and insert only: New, delect only:

Today the actual project used the spool, found online a lot of content is not very full, their own groping long time, now summed up.One, through the spool command, you can write the contents of the Select database to a file, by setting some

Recently, a production database user is always locked, causing some applications in the production environment to access the database connection failure, resulting in a production accident, the user is locked for the issue of the following record

Create user Oracle to tablespace users without permission alter user username quota unlimited on users; Creating a temporary tablespace create temporary tablespace test_temp tempfile ' E:/oracle/product/10.2.0/oradata/testserver/test_ temp01.dbf '

BIG biang teaches you how to delete oracle by mistake, biangoracle Today, I accidentally saw a message on the Internet about oracle accidental deletion of data recovery, which is really helpful. Next I will report my test to you.   1. select * from

Detailed installation and uninstallation of oracle 11g r2 in windows, oracle11g Oracle 11g Installation 1.decompress the downloaded package. Then, click setup.exe to start installation. 2. The following message is displayed: deselect the check box

Oracle Study Notes (6) -- FunctionsFunction functions facilitate statistical processing of data query result functions classification Oracle built-in system functions numeric functions rounded to ROUND (n [, m]) 1, n: 2. m: indicates the number of

OracleSQL classic query trainer Article 2 Oracle SQL classic query trainer Article 2 This article shares the second article on typical Oracle SQL queries. It is just the author's own opinion. If you have any questions, I hope you can provide

Oracle Flashback and RMAN examples, flashbackrmanAuthor: Grey original address: http://www.cnblogs.com/greyzeng/p/5346833.html  Environment: Windows 10 Professional Edition Oracle Database 12c Release 1  Flashback example scenario 1:  

Difference between translate and replace: translatereplace Today, the nesting of replace and translate in the oracle database is a bit confusing, so I went online and looked at it. I felt very open: The problems encountered today are as