Oracle

Mathematical functions1. Absolute ValueS: Select ABS (-1) ValueO: Select ABS (-1) value from dual 2. INTEGER (large)S: Select ceiling (-1.001) ValueO: Select Ceil (-1.001) value from dual 3. Round (small)S: Select floor (-1.001) ValueO: Select

PLSQLDownload PL/SQL developerDownloadVersion 7.1.0.1337 PL/SQL developerIs an integrated development environment for development, testing, debugging, and optimization of Oracle PL/SQL storage.ProgramUnit, Such as triggers.PL/SQL developerThe

(Reprinted) If we use the SELECT statement to query data from the database, how does the Oracle database work? What can we learn from this? Next, we will combine a simple SELECT statement to look at the operating mechanism of the Oracle database

For a database, each table actually represents a database object, and the database object refers to all the operations defined by DDL, for example: tables, views, indexes, sequences, constraints, and so on all belong to object operations. Therefore,

Http://blog.csdn.net/sunsnow8/archive/2005/01/10/246588.aspx Oracle is always different from others for advanced features (I hate this very much. If you use it, you needFor specific programming, this is why I never look good at Weblogic and other

Http://blog.sina.com.cn/s/blog_4a93ccea0100ijd9.html Use of toad for oracle tools Source: Reprinted  [Note: you can click an image to enlarge it.] During the development of Oracle applications, it is a tedious and time-consuming task to access

Recently, the project progress is relatively slow. I have studied the Oracle stored procedure and pasted the code.   First, paste the paging Stored Procedure Code of oracle. 1. This is the package code   Create or replace package db_oper is --

Use the sqlldr tool of Oracle to import data from the SDSS. CSV file to the database. The content of SDSS. CSV placed on E: \ is as follows: 2.3757292136910399e-4,-8.9490277843631194, 20.302597,December 0.00023851549291556,-0.88450365314434698, 20.09

  We plan to use the latest 10 GB version 10.2.0.5.4 for the newly created environment. The previous test process is as follows: Upgrade a single oracle instance from 10.2.0.1 to 10.2.0.5.4 on

1 Introduction In the process of program design, we often encounter comparison between two record sets. For example, the PMS interface of China East Power Grid transfers data that is changed (added, modified, and deleted) within one day. There are

In Oracle databases, user permissions are divided into two types (here we do not discuss the permissions of dba or role, but only the permissions of common users ), system Privilege System permission and User Table Privilege User data Table

Oracle 10.2 was installed on RHEL4 with VM last week, and many problems were encountered in the middle.Summary: I have posted a post. If you have any shortcomings, please correct me. Thank you! References:Oracle Official Website:

Home> database> Oracle> body Install oracle 11g in linux 14:17:56 let me say something Add to favorites I want to contribute [Font: small and big] My linux version is centos5.5 and the kernel version is 2.6.18-194.

Oracle Releases NoSQL Databases     Oracle, as the world's largest relational Database provider, has also joined the NoSQL Database chain in its product chain. In addition, this new Database name is so domineering that it is called NoSQL Database, I

Today, the above header requires a similar function, initially thought of column-to-row, but there is no good way to implement it, this function is good The DECODE function is one of the powerful functions of oracle pl/SQL. Currently, only oracle

Each node in various IP-PUBLIC-VIP-Private-scan ip 1, PUBLIC, and VIPOracle RAC in RAC has a virtual IP address (VIP), which is in the same network segment as the public ip. The vip is attached to the public network interface. The main difference

Functions in Oracle (1)-The Decode ecode () function is one of the powerful functions of oracle pl/SQL. Currently, only oracle SQL provides this function, this function is not available for SQL implementations of other database vendors. The DECODE

Oracle table connection Overview: SQL/Oracle queries data from multiple tables using Table connections Format: select field list from table1, table2 where table1.column1 = table2.column2; Note: When a field with the same name exists in multiple

Today, the above header requires a similar function, initially thought of column-to-row, but there is no good way to implement it, this function is goodThe DECODE function is one of the powerful functions of oracle pl/SQL. Currently, only oracle SQL

1. The ORACLE parser processes the table names in the FROM clause in the order FROM right to left. Therefore, the table written in the FROM clause (basic table driving table) will be processed first. When the FROM clause contains multiple tables,