linux安装mysql和使用c语言操作数据库的方法 c语言连接mysql

sudo apt-get install mysql-server

ps -el | grep mysql

sudo service mysql restart

sudo apt-get install mysql-workbench

mysql-workbench --log-level=debug3 --verbose

mysql -u root -p

use mysql
SELECT host, user, password FROM user;

sudo apt-get install libmysqlclient-dev

#添加账户
GRANT ALL ON *.* TO rick@localhost IDENTIFIED BY 'secret'
\q
#使用新创建的rick账户登录
mysql -u rick -p
#创建数据库
CREATE DATABASE foo;

--
-- Create the table children
--
CREATE TABLE children (
    childno int(11) NOT NULL auto_increment,
    fname varchar(30),
    age int(11),
    PRIMARY KEY (childno)
);
--
-- Populate the table 'children'
--
INSERT INTO children(childno, fname, age) VALUES (1, 'Jenny', 21);
INSERT INTO children(childno, fname, age) VALUES (2, 'Andrew', 17);
INSERT INTO children(childno, fname, age) VALUES (3, 'Gavin', 8);
INSERT INTO children(childno, fname, age) VALUES (4, 'Duncan', 6);
INSERT INTO children(childno, fname, age) VALUES (5, 'Emma', 4);
INSERT INTO children(childno, fname, age) VALUES (6, 'Alex', 15);
INSERT INTO children(childno, fname, age) VALUES (7, 'Adrian', 9);

mysql -u rick --password=secret foo
\. create_children.sql

#include <stdlib.h>
#include <stdio.h>

#include "mysql.h"

int main(int argc, char *argv[]) {
    MYSQL my_connection;
    int res;

    mysql_init(&my_connection);
    if (mysql_real_connect(&my_connection, "localhost",
                "rick", "secret", "foo", 0, NULL, 0)) {
        printf("Connection success\n");
        res = mysql_query(&my_connection, "INSERT INTO children(fname, age) VALUES('Ann', 3)");
        if (!res) {
            printf("Inserted %lu rows\n",
                    (unsigned long)mysql_affected_rows(&my_connection));
        } else {
            fprintf(stderr, "Insert error %d: %s\n", mysql_errno(&my_connection), mysql_error(&my_connection));
        }

        mysql_close(&my_connection);
    } else {
        fprintf(stderr, "Connection failed\n");
        if (mysql_error(&my_connection)) {
            fprintf(stderr, "Connection error %d: %s\n", mysql_errno(&my_connection), mysql_error(&my_connection));
        }
    }
    return EXIT_SUCCESS;
}

gcc -I/usr/include/mysql demo.c -L/usr/lib/mysql -lmysqlclient -o demo

./demo

#结果如下
Connection success
Inserted 1 rows