mysql query Insert does not work - mysql

Question

I am trying to insert a field into a mysql db but it does not work.
I have tried to change around abit using just "insert into image", using an query string insteed of the string literal.
I looked here to try understand if syntax was different or something.
I think Iam doing it according to the API.
Here my setup
From the out put i get
i = 1
MySQL Tables in mysql database:
images
here is the code.
Any ideas?
/* Simple C program that connects to MySQL Database server*/
#include <mysql.h>
#include <stdio.h>
#include <stdlib.h>
int main() {
MYSQL *conn;
MYSQL_RES *res;
MYSQL_ROW row;
char *server = "localhost";
char *user = "root";
//set the password for mysql server here
char *password = "********";
char *database = "myDB";
conn = mysql_init(NULL);
if (!mysql_real_connect(conn, server, user, password, database, 0, NULL, 0))
{
fprintf(stderr, "%s\n", mysql_error(conn));
exit(1);
}
/* send SQL query */
if (mysql_query(conn, "show tables") == 1)
{
fprintf(stderr, "%s\n", mysql_error(conn));
exit(1);
}
int i = mysql_query(conn ,"INSERT INTO `myDB`.`images` (`id`, `date`, `path`) VALUES (NULL, CURRENT_TIMESTAMP, 'mypath/foo/bar')");
printf("i = %d \n", i);
res = mysql_use_result(conn);
/* output table name */
printf("MySQL Tables in mysql database:\n");
while ((row = mysql_fetch_row(res)) != NULL)
{
printf("%s \n", row[0]);
}
/* close connection */
mysql_free_result(res);
mysql_close(conn);
return 0;
}

Answer 1

Assuming id is the primary id and INT, it may be auto-increment. If that's the case, take out id from your statement.
INSERT INTO `myDB`.`images` (`date`, `path`) VALUES (CURRENT_TIMESTAMP, 'mypath/foo/bar');
It would be helpful to answer the question if we knew the format of the table. This is assuming date is TIMESTAMP and path is CHAR or most likely VARCHAR.

Answer 2

confirm that your ID column is not a primary key, because primary key does not allow null columns

Answer 3

I manages to get it working now. I found some examples here that i tried to recreate and got it working.
It is not entirely same as other query
if (!mysql_real_connect(conn, server, user, password, database, 0, NULL, 0))
{
fprintf(stderr, "%s\n", mysql_error(conn));
exit(1);
}
if (mysql_query(conn ,"INSERT INTO images VALUES (NULL , CURRENT_TIMESTAMP , 'awesome')"))
{
fprintf(stderr, "Error: could not execute query \n");
exit(1);
}
int my_bool = mysql_commit(conn);
mysql_free_result(res);
mysql_close(conn);
return 0;