Home Database Mysql Tutorial Java调用 Oracle 函数

Java调用 Oracle 函数

Jun 07, 2016 pm 05:33 PM
oracle function

Java调用 Oracle 函数,一个函数本质上一个返回一个结果的存储过程,这个例子示范了怎么调用有in、out和in/out参数的函数。

Java调用 Oracle 函数,一个函数本质上一个返回一个结果的存储过程,这个例子示范了怎么调用有in、out和in/out参数的函数。

大同小异的方法。

  CallableStatement cs;
  try {
  // 调用一个没有参数的函数; 函数返回 a VARCHAR
  // 预处理callable语句
  
  cs = connection.prepareCall("{? = call myfunc}");
  
  // 注册返回值类型
  cs.registerOutParameter(1, i);
  
  // Execute and retrieve the returned value
  cs.execute();
  String retValue = cs.getString(1);
  
  // 调用有一个in参数的函数; the function returns a VARCHAR
  cs = connection.prepareCall("{? = call myfuncin(?)}");
  
  // Register the type of the return value
  cs.registerOutParameter(1, Types.VARCHAR);
  
  // Set the value for the IN parameter
  cs.setString(2, "a string");
  
  // Execute and retrieve the returned value
  cs.execute();
  retValue = cs.getString(1);
  
  // 调用有一个out参数的函数; the function returns a VARCHAR
  cs = connection.prepareCall("{? = call myfuncout(?)}");
  
  // Register the types of the return value and OUT parameter
  cs.registerOutParameter(1, Types.VARCHAR);
  cs.registerOutParameter(2, Types.VARCHAR);
  
  // Execute and retrieve the returned values
  cs.execute();
  retValue = cs.getString(1);      // return value
  String outParam = cs.getString(2);  // OUT parameter
  
  // 调用有一个in/out参数的函数; the function returns a VARCHAR
  cs = connection.prepareCall("{? = call myfuncinout(?)}");
  
  // Register the types of the return value and OUT parameter
  cs.registerOutParameter(1, Types.VARCHAR);
  cs.registerOutParameter(2, Types.VARCHAR);
  
  // Set the value for the IN/OUT parameter
  cs.setString(2, "a string");
  
  // Execute and retrieve the returned values
  cs.execute();
  retValue = cs.getString(1);      // return value
  outParam = cs.getString(2);      // IN/OUT parameter
  } catch (SQLException e) {
  }

相关阅读:

Oracle函数之Replace() 

Oracle函数大全

Oracle函数之case和decode的用法区别及性能比较

Oracle函数和存储过程简单实例

Oracle函数 通过秒数或分钟数获取时间段

linux

Statement of this Website
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn

Hot AI Tools

Undresser.AI Undress

Undresser.AI Undress

AI-powered app for creating realistic nude photos

AI Clothes Remover

AI Clothes Remover

Online AI tool for removing clothes from photos.

Undress AI Tool

Undress AI Tool

Undress images for free

Clothoff.io

Clothoff.io

AI clothes remover

AI Hentai Generator

AI Hentai Generator

Generate AI Hentai for free.

Hot Article

R.E.P.O. Energy Crystals Explained and What They Do (Yellow Crystal)
2 weeks ago By 尊渡假赌尊渡假赌尊渡假赌
Hello Kitty Island Adventure: How To Get Giant Seeds
1 months ago By 尊渡假赌尊渡假赌尊渡假赌
Two Point Museum: All Exhibits And Where To Find Them
1 months ago By 尊渡假赌尊渡假赌尊渡假赌

Hot Tools

Notepad++7.3.1

Notepad++7.3.1

Easy-to-use and free code editor

SublimeText3 Chinese version

SublimeText3 Chinese version

Chinese version, very easy to use

Zend Studio 13.0.1

Zend Studio 13.0.1

Powerful PHP integrated development environment

Dreamweaver CS6

Dreamweaver CS6

Visual web development tools

SublimeText3 Mac version

SublimeText3 Mac version

God-level code editing software (SublimeText3)

How do you alter a table in MySQL using the ALTER TABLE statement? How do you alter a table in MySQL using the ALTER TABLE statement? Mar 19, 2025 pm 03:51 PM

The article discusses using MySQL's ALTER TABLE statement to modify tables, including adding/dropping columns, renaming tables/columns, and changing column data types.

How do I configure SSL/TLS encryption for MySQL connections? How do I configure SSL/TLS encryption for MySQL connections? Mar 18, 2025 pm 12:01 PM

Article discusses configuring SSL/TLS encryption for MySQL, including certificate generation and verification. Main issue is using self-signed certificates' security implications.[Character count: 159]

How do you handle large datasets in MySQL? How do you handle large datasets in MySQL? Mar 21, 2025 pm 12:15 PM

Article discusses strategies for handling large datasets in MySQL, including partitioning, sharding, indexing, and query optimization.

What are some popular MySQL GUI tools (e.g., MySQL Workbench, phpMyAdmin)? What are some popular MySQL GUI tools (e.g., MySQL Workbench, phpMyAdmin)? Mar 21, 2025 pm 06:28 PM

Article discusses popular MySQL GUI tools like MySQL Workbench and phpMyAdmin, comparing their features and suitability for beginners and advanced users.[159 characters]

How do you drop a table in MySQL using the DROP TABLE statement? How do you drop a table in MySQL using the DROP TABLE statement? Mar 19, 2025 pm 03:52 PM

The article discusses dropping tables in MySQL using the DROP TABLE statement, emphasizing precautions and risks. It highlights that the action is irreversible without backups, detailing recovery methods and potential production environment hazards.

How do you represent relationships using foreign keys? How do you represent relationships using foreign keys? Mar 19, 2025 pm 03:48 PM

Article discusses using foreign keys to represent relationships in databases, focusing on best practices, data integrity, and common pitfalls to avoid.

How do you create indexes on JSON columns? How do you create indexes on JSON columns? Mar 21, 2025 pm 12:13 PM

The article discusses creating indexes on JSON columns in various databases like PostgreSQL, MySQL, and MongoDB to enhance query performance. It explains the syntax and benefits of indexing specific JSON paths, and lists supported database systems.

How do I secure MySQL against common vulnerabilities (SQL injection, brute-force attacks)? How do I secure MySQL against common vulnerabilities (SQL injection, brute-force attacks)? Mar 18, 2025 pm 12:00 PM

Article discusses securing MySQL against SQL injection and brute-force attacks using prepared statements, input validation, and strong password policies.(159 characters)

See all articles