Table of Contents
Requirements
Sample C Program
How do I compile and link program against MySQL libs?
References:
Home Database Mysql Tutorial 用C api 连接mysql数据库的 开发实例

用C api 连接mysql数据库的 开发实例

Jun 07, 2016 pm 03:02 PM
api mysql download Development example database connect

1. 下载mysql c connector 安装包; 有两种方法: 1 下载tar文件, 将其中的的 lib, include , bin 都放在 /usr/local 相应的目录下; 2. 也可配置链接库的附加目录 : sudo vi /etc/ld.so.conf 文件中加入你的连接器的lib目录; 3. 好像也可以用 sudo apt

1. 下载mysql c connector 安装包; 有两种方法:

                 1 下载tar文件, 将其中的的 lib, include , bin 都放在 /usr/local 相应的目录下;

                 2. 也可配置链接库的附加目录 : sudo vi /etc/ld.so.conf 文件中加入你的连接器的lib目录;

                 3. 好像也可以用 sudo apt-get install libmysqclient-dev

                                        对于c++的好像是 sudo apt-get install libmysql++-dev

 

2.编辑 C 程序利用mysql c api : 我的程序如下:

 

3. 编译 链接,测试:

 

注意链接动态库的选项 : -lmysql

 

4.对mysql c开发几个有用的命令:ldd, mysql_config, file ,nm

ldd: 输出对动态库的依赖,即依赖的动态库的信息;

mysql_conf  :可以获得对mysql的配置开发的信息: mysql_config -- libs

 

看一下,这几个命令的输出情况:

 


下文的链接:http://www.cyberciti.biz/tips/linux-unix-connect-mysql-c-api-program.html

 


Howto: Connect MySQL server using C program API under Linux or UNIX

by Vivek Gite on May 31, 2007 · 56 comments

用C api 连接mysql数据库的 开发实例

From my mailbag:

How do I write a C program to connect MySQL database server?

MySQL database does support C program API just like PHP or perl.

The C API code is distributed with MySQL. It is included in the mysqlclient library and allows C programs to access a database.

Many of the clients in the MySQL source distribution are written in C. If you are looking for examples that demonstrate how to use the C API, take a look at these clients. You can find these in the clients directory in the MySQL source distribution.

Requirements

Make sure you have development environment installed such as gcc, mysql development package etc. Following is the list summarize the list of packages to compile program:

  • mysql: MySQL client programs and shared library
  • mysqlclient: Backlevel MySQL shared libraries (old libs)
  • mysql-devel: Files for development of MySQL applications (a must have)
  • mysql-server: Mysql server itself
  • gcc, make and other development libs: GNU C compiler

Sample C Program

Following instructions should work on any Linux distro or UNIX computer. Here is the small program that connects to mysql server and list tables from mysql database.(download link):

<tt><em></em>



</tt>

Copy after login

MySQL comes with a special script called mysql_config. It provides you with useful information for compiling your MySQL client and connecting it to MySQL database server. You need to use following two options.
Pass --libs option - Libraries and options required to link with the MySQL client library.

 

$ mysql_config --libs
Output:

-L/usr/lib64/mysql -lmysqlclient -lz -lcrypt -lnsl -lm -L/usr/lib64 -lssl -lcrypto
Copy after login

Pass --cflags option - Compiler flags to find include files and critical compiler flags and defines used when compiling the libmysqlclient library.
$ mysql_config --cflags
Output:

-I/usr/include/mysql -g -pipe -m64 -D_GNU_SOURCE -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -fno-strict-aliasing
Copy after login

You need to pass above option to GNU C compiler i.e. gcc. So to compile above program, enter:
$ <strong>gcc -o <span>output-file</span> $(mysql_config --cflags)<span>mysql-c-api.c</span> $(mysql_config --libs)</strong>
Now execute program:
$ ./output-file
Output:

MySQL Tables in mysql database:


columns_priv


db


func


help_category


help_keyword


help_relation


help_topic


host


tables_priv


time_zone


time_zone_leap_second


time_zone_name


time_zone_transition


time_zone_transition_type


user 
Copy after login

References:

  • MySQL C API - A must read - official MySQL C API documentation

 

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

Video Face Swap

Video Face Swap

Swap faces in any video effortlessly with our completely free AI face swap tool!

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 to open phpmyadmin How to open phpmyadmin Apr 10, 2025 pm 10:51 PM

You can open phpMyAdmin through the following steps: 1. Log in to the website control panel; 2. Find and click the phpMyAdmin icon; 3. Enter MySQL credentials; 4. Click "Login".

MySQL: An Introduction to the World's Most Popular Database MySQL: An Introduction to the World's Most Popular Database Apr 12, 2025 am 12:18 AM

MySQL is an open source relational database management system, mainly used to store and retrieve data quickly and reliably. Its working principle includes client requests, query resolution, execution of queries and return results. Examples of usage include creating tables, inserting and querying data, and advanced features such as JOIN operations. Common errors involve SQL syntax, data types, and permissions, and optimization suggestions include the use of indexes, optimized queries, and partitioning of tables.

How to use single threaded redis How to use single threaded redis Apr 10, 2025 pm 07:12 PM

Redis uses a single threaded architecture to provide high performance, simplicity, and consistency. It utilizes I/O multiplexing, event loops, non-blocking I/O, and shared memory to improve concurrency, but with limitations of concurrency limitations, single point of failure, and unsuitable for write-intensive workloads.

Why Use MySQL? Benefits and Advantages Why Use MySQL? Benefits and Advantages Apr 12, 2025 am 12:17 AM

MySQL is chosen for its performance, reliability, ease of use, and community support. 1.MySQL provides efficient data storage and retrieval functions, supporting multiple data types and advanced query operations. 2. Adopt client-server architecture and multiple storage engines to support transaction and query optimization. 3. Easy to use, supports a variety of operating systems and programming languages. 4. Have strong community support and provide rich resources and solutions.

MySQL's Place: Databases and Programming MySQL's Place: Databases and Programming Apr 13, 2025 am 12:18 AM

MySQL's position in databases and programming is very important. It is an open source relational database management system that is widely used in various application scenarios. 1) MySQL provides efficient data storage, organization and retrieval functions, supporting Web, mobile and enterprise-level systems. 2) It uses a client-server architecture, supports multiple storage engines and index optimization. 3) Basic usages include creating tables and inserting data, and advanced usages involve multi-table JOINs and complex queries. 4) Frequently asked questions such as SQL syntax errors and performance issues can be debugged through the EXPLAIN command and slow query log. 5) Performance optimization methods include rational use of indexes, optimized query and use of caches. Best practices include using transactions and PreparedStatemen

Monitor Redis Droplet with Redis Exporter Service Monitor Redis Droplet with Redis Exporter Service Apr 10, 2025 pm 01:36 PM

Effective monitoring of Redis databases is critical to maintaining optimal performance, identifying potential bottlenecks, and ensuring overall system reliability. Redis Exporter Service is a powerful utility designed to monitor Redis databases using Prometheus. This tutorial will guide you through the complete setup and configuration of Redis Exporter Service, ensuring you seamlessly build monitoring solutions. By studying this tutorial, you will achieve fully operational monitoring settings

How to view sql database error How to view sql database error Apr 10, 2025 pm 12:09 PM

The methods for viewing SQL database errors are: 1. View error messages directly; 2. Use SHOW ERRORS and SHOW WARNINGS commands; 3. Access the error log; 4. Use error codes to find the cause of the error; 5. Check the database connection and query syntax; 6. Use debugging tools.

Solution to MySQL encounters 'Access denied for user' problem Solution to MySQL encounters 'Access denied for user' problem Apr 11, 2025 pm 05:36 PM

How to solve the MySQL "Access denied for user" error: 1. Check the user's permission to connect to the database; 2. Reset the password; 3. Allow remote connections; 4. Refresh permissions; 5. Check the database server configuration (bind-address, skip-grant-tables); 6. Check the firewall rules; 7. Restart the MySQL service. Tip: Make changes after backing up the database.

See all articles