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