Page 70-Oracle Programming Tutorials: Learn Oracle Online-php.cn

Article Tags

All
web3.0
- Mysql Tutorial
- navicat
- SQL
- Redis
- phpMyAdmin
- Oracle
- MongoDB
- NoSQL database
- Memcached
- cloudera
- memcache
Backend Development
- Mysql Tutorial
- navicat
- SQL
- Redis
- phpMyAdmin
- Oracle
- MongoDB
- NoSQL database
- Memcached
- cloudera
- memcache
Web Front-end
- Mysql Tutorial
- navicat
- SQL
- Redis
- phpMyAdmin
- Oracle
- MongoDB
- NoSQL database
- Memcached
- cloudera
- memcache
Database
- Mysql Tutorial
- navicat
- SQL
- Redis
- phpMyAdmin
- Oracle
- MongoDB
- NoSQL database
- Memcached
- cloudera
- memcache
Operation and Maintenance
- Mysql Tutorial
- navicat
- SQL
- Redis
- phpMyAdmin
- Oracle
- MongoDB
- NoSQL database
- Memcached
- cloudera
- memcache
Development Tools
- Mysql Tutorial
- navicat
- SQL
- Redis
- phpMyAdmin
- Oracle
- MongoDB
- NoSQL database
- Memcached
- cloudera
- memcache
PHP Framework
- Mysql Tutorial
- navicat
- SQL
- Redis
- phpMyAdmin
- Oracle
- MongoDB
- NoSQL database
- Memcached
- cloudera
- memcache
Common Problem
- Mysql Tutorial
- navicat
- SQL
- Redis
- phpMyAdmin
- Oracle
- MongoDB
- NoSQL database
- Memcached
- cloudera
- memcache
Other
- Mysql Tutorial
- navicat
- SQL
- Redis
- phpMyAdmin
- Oracle
- MongoDB
- NoSQL database
- Memcached
- cloudera
- memcache
Tech
- Mysql Tutorial
- navicat
- SQL
- Redis
- phpMyAdmin
- Oracle
- MongoDB
- NoSQL database
- Memcached
- cloudera
- memcache
CMS Tutorial
- Mysql Tutorial
- navicat
- SQL
- Redis
- phpMyAdmin
- Oracle
- MongoDB
- NoSQL database
- Memcached
- cloudera
- memcache
Java
- Mysql Tutorial
- navicat
- SQL
- Redis
- phpMyAdmin
- Oracle
- MongoDB
- NoSQL database
- Memcached
- cloudera
- memcache
System Tutorial
- Mysql Tutorial
- navicat
- SQL
- Redis
- phpMyAdmin
- Oracle
- MongoDB
- NoSQL database
- Memcached
- cloudera
- memcache
Computer Tutorials
- Mysql Tutorial
- navicat
- SQL
- Redis
- phpMyAdmin
- Oracle
- MongoDB
- NoSQL database
- Memcached
- cloudera
- memcache
Hardware Tutorial
- Mysql Tutorial
- navicat
- SQL
- Redis
- phpMyAdmin
- Oracle
- MongoDB
- NoSQL database
- Memcached
- cloudera
- memcache
Mobile Tutorial
- Mysql Tutorial
- navicat
- SQL
- Redis
- phpMyAdmin
- Oracle
- MongoDB
- NoSQL database
- Memcached
- cloudera
- memcache
Software Tutorial
- Mysql Tutorial
- navicat
- SQL
- Redis
- phpMyAdmin
- Oracle
- MongoDB
- NoSQL database
- Memcached
- cloudera
- memcache
Mobile Game Tutorial
- Mysql Tutorial
- navicat
- SQL
- Redis
- phpMyAdmin
- Oracle
- MongoDB
- NoSQL database
- Memcached
- cloudera
- memcache

Home

Technical Articles

Database

Oracle

oracle temporary table delete

In Oracle database, temporary table is a very useful database object. They are often used to solve problems, such as storing temporary data, and organizing and processing data. However, after use, the temporary table needs to be deleted to free up database resources. This article will introduce how to correctly delete Oracle temporary tables. Step 1: Query the temporary table. Before deleting the temporary table, we need to check whether they exist. We can use the following SQL statement to query whether a temporary table exists: ```sqlSELECT table_

May 13, 2023 pm 06:20 PM

oracle 11g delete

Oracle database is a very popular relational database software. It has the advantages of high performance and good stability, so it is widely used in various enterprise-level systems. In the daily use of Oracle database, sometimes it is necessary to perform data deletion operations, and how to perform data deletion operations correctly is also very important. Therefore, this article will introduce how to perform data deletion operations in Oracle 11g. 1. The prerequisites for Oracle 11g database deletion are to perform the Oracle 11g database data deletion operation.

May 13, 2023 pm 05:57 PM

oracle installation stuck

Enterprise-level database software Oracle is the world's leading database management software. It supports multiple operating systems and hardware platforms and is widely used in enterprise production environments. Through the Oracle database, users can store, manage and process large amounts of data, perform transaction processing and online analysis and processing, and achieve efficient operation of enterprise informatization. However, Oracle's installation process may encounter some lag or stuck problems, causing trouble to users. This article will introduce common Oracle installation stuck problems and solutions to help users successfully complete the installation process.

May 13, 2023 pm 05:55 PM

oracle renamed

oracle Name Change: From Oracle to OracleOracle (NYSE: ORCL) is currently one of the world's largest vendors of enterprise database software. But some people may not know that its predecessor was actually a hardware manufacturer and service provider called Oracle Corporation. Oracle was founded in 1977 by Larry Ellison, Bob Miner and Ed Oates. Initially, Oracle mainly produced digital

May 13, 2023 pm 05:54 PM

Unable to connect to oracle database

In the process of database development and data management, we often encounter the problem of not being able to connect to the database, which is a very troublesome thing. Today we will talk about the solution to the problem of being unable to connect to the Oracle database. First, we need to understand several reasons why we cannot connect to the Oracle database. The first possibility is a network problem. An unstable network connection or incorrect configuration will affect the connection. The second reason is the permission issue. Without the correct user name and password, you cannot connect to the Oracle database. Another possibility is to count

May 13, 2023 pm 05:53 PM

oracle stored procedure export

Detailed explanation of Oracle stored procedure export method Oracle is a commonly used relational database management system that is widely used in enterprise-level applications. In Oracle, stored procedures are an extremely important feature, which are similar to functions in a program. Stored procedures can contain data manipulation language (DML) and data definition language (DDL) statements, can pass data through parameters, and can implement complex calculations and business logic. During the development process, we may need to export the stored procedure for backup, migration or sharing.

May 13, 2023 pm 05:26 PM

oracle query library name

In the Oracle database, querying the database name can be achieved through the following methods: 1. Use the SELECT statement to query the database name. Using the SELECT statement to query the database name is the most common method. In the Oracle database, there is a special table called V$DATABASE, which contains information about the current database instance, including the database name. The following is the basic statement to query the database name:```SELECT name FROM v$database;```After executing the above statement, it will return

May 13, 2023 pm 05:24 PM

oracle temporary table delete

Oracle databases typically use temporary tables as a way to handle query result sets and temporary data storage. However, when these temporary tables are no longer needed, they need to be deleted to free up database space. In this article, we will learn how to delete Oracle temporary tables. A temporary table is a special table used to store temporary data and is automatically deleted as the session ends or the transaction is completed. These tables are typically used for intermediate results in stored procedures and complex queries, and they are only visible to the session or transaction that created them. In Oracle, temporary tables use T

May 13, 2023 pm 05:22 PM

oracle11g garbled code

Oracle11g Garbled Code Problems and Solutions When using Oracle database, sometimes you will encounter garbled characters, that is, Chinese characters cannot be displayed normally when storing or reading data in the database. This problem may affect our work efficiency, so it needs to be solved in time. This article will introduce the main reasons and solutions for garbled characters in Oracle11g. 1. The main reasons for garbled characters 1.1 Inconsistent character set settings Oracle database supports multiple character sets, such as UTF-8, GBK, GB

May 13, 2023 pm 04:59 PM

oracle sql execute stored procedure

Oracle database is a relational database management system widely used internationally. Its powerful functions and stable performance make it widely used in enterprise-level application development. Stored procedures are a very important part of the Oracle database. They can encapsulate a set of SQL statements into a whole, which can reduce network transmission overhead and improve efficiency when called. This article will introduce how to execute stored procedures in Oracle. 1. Creation of stored procedures To create stored procedures in Oracle, you need to use CRE

May 13, 2023 pm 04:52 PM

oracle quotes escape

Oracle is currently one of the most popular enterprise-level database management systems and is widely used in various enterprise-level application platforms. In Oracle, quotation mark escaping is a common problem because quotation marks are the marking symbols that represent string values in SQL statements. If the string value itself contains quotes, they need to be escaped to avoid syntax errors. This article will introduce in detail the quotation mark escaping problem in Oracle. 1. Single quote escaping In Oracle, two types of quotes are used to represent string values: single quotes and double quotes. Among them, single quotes are usually used for

May 13, 2023 pm 04:50 PM

oracle query performance

Oracle is a relational database management system commonly used in the industry. Its efficient performance is crucial for enterprise data processing, management and analysis. However, as the amount of enterprise data increases and complex business requirements increase, Oracle's data query performance has also become a major problem for enterprise management. In this article, we will explore several ways to improve Oracle query performance. 1. Create appropriate indexes In Oracle, appropriate indexes can greatly improve query performance. Indexes help the database quickly find where the data needs to be queried.

May 13, 2023 pm 04:18 PM

oracle convert column to multiple columns

Converting one column of data into multiple columns of data is a common requirement in Oracle. For example, let's say you have a table that contains products, sales dates, and sales quantities. You want to convert this into monthly sales for each product. The simplest way to achieve this goal is to use the PIVOT operation. Here is a sample table: ```PRODUCT SALE_DATE SALE_QUANTITY---------------------------------------------A

May 13, 2023 pm 04:17 PM

Oracle data was accidentally deleted

With the improvement of enterprise informatization, databases have become an important data storage and management method for enterprises, and data have also become one of the most valuable resources of enterprises. However, it is inevitable that data will be accidentally deleted, especially in complex data management environments, this situation is more common. Oracle database is used by many enterprises because of its advantages such as stability, reliability and space management. If data is accidentally deleted, it will cause serious losses to the enterprise. So, what should we do if the data in the Oracle database is accidentally deleted? 1. See if there is

May 13, 2023 pm 04:07 PM