RedPanda-CPP/platform/windows/templates/mysql/mysql_c.txt

103 lines
2.0 KiB
Plaintext
Raw Normal View History

2022-08-07 12:10:12 +08:00
/*
A demo for mysql client, from https://zetcode.com/db/mysqlc/
*/
#include <mysql/mysql.h>
#include <stdio.h>
#include <stdlib.h>
void finish_with_error(MYSQL *con)
{
fprintf(stderr, "%s\n", mysql_error(con));
mysql_close(con);
exit(1);
}
int main(int argc, char **argv)
{
MYSQL *con = mysql_init(NULL);
if (con == NULL)
{
fprintf(stderr, "%s\n", mysql_error(con));
exit(1);
}
if (mysql_real_connect(con, "localhost", "root", "",
"testdb", 0, NULL, 0) == NULL)
{
finish_with_error(con);
}
//Create table
if (mysql_query(con, "DROP TABLE IF EXISTS cars")) {
finish_with_error(con);
}
if (mysql_query(con, "CREATE TABLE cars(id INT PRIMARY KEY AUTO_INCREMENT, name VARCHAR(255), price INT)")) {
finish_with_error(con);
}
// insert datas
if (mysql_query(con, "INSERT INTO cars VALUES(1,'Audi',52642)")) {
finish_with_error(con);
}
if (mysql_query(con, "INSERT INTO cars VALUES(2,'Mercedes',57127)")) {
finish_with_error(con);
}
if (mysql_query(con, "INSERT INTO cars VALUES(3,'Skoda',9000)")) {
finish_with_error(con);
}
if (mysql_query(con, "INSERT INTO cars VALUES(4,'Volvo',29000)")) {
finish_with_error(con);
}
if (mysql_query(con, "INSERT INTO cars VALUES(5,'Bentley',350000)")) {
finish_with_error(con);
}
if (mysql_query(con, "INSERT INTO cars VALUES(6,'Citroen',21000)")) {
finish_with_error(con);
}
if (mysql_query(con, "INSERT INTO cars VALUES(7,'Hummer',41400)")) {
finish_with_error(con);
}
if (mysql_query(con, "INSERT INTO cars VALUES(8,'Volkswagen',21600)")) {
finish_with_error(con);
}
//query datas
if (mysql_query(con, "SELECT * FROM cars"))
{
finish_with_error(con);
}
MYSQL_RES *result = mysql_store_result(con);
if (result == NULL)
{
finish_with_error(con);
}
int num_fields = mysql_num_fields(result);
MYSQL_ROW row;
while ((row = mysql_fetch_row(result)))
{
for(int i = 0; i < num_fields; i++)
{
printf("%s ", row[i] ? row[i] : "NULL");
}
printf("\n");
}
mysql_free_result(result);
mysql_close(con);
exit(0);
}