Iceman :
The query SET @t=NOW(); INSERT INTO tests(posted) VALUES(@t); from C++ code (libmysqlclient) results in the following message:
You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'INSERT INTO tests(posted) VALUES(@t)' at line 1
But the query works fine from console or HeidiSQL.
Table "tests":
'id' int(10) unsigned NOT NULL AUTO_INCREMENT,
'posted' datetime NOT NULL,
PRIMARY KEY ('id')
main.cpp
#include <cstdio>
#include "sqldb.h"
int main(int argc, char** argv) {
MySQLClient DB;
if (!DB.Connect("192.168.1.254", "test", "testpass")) {
printf("MySQL: %s\n", DB.Error());
return 1;
}
if (!DB.UseDB("test")) {
printf("MySQL: %s\n", DB.Error());
return 2;
}
if (!DB.Query("SET @t=NOW(); INSERT INTO tests(posted) VALUES(@t);")) {
printf("MySQL: %s\n", DB.Error());
return 3;
}
return 0;
}
Function "Query"
bool MySQLClient::Query(const char * statement) {
if (!ctx || !statement) return false;
unsigned long length = 0;
while(statement[length]) ++length;
return !mysql_real_query(static_cast<MYSQL*>(ctx), statement, length);
}
Why `libmysqlclient can't process this query?
rua.kr :
CLIENT_MULTI_STATEMENTS enables mysql_query() and mysql_real_query() to execute statement strings containing multiple statements separated by semicolons.
mysql_real_connect(mysql, server, username, password, db, 0, NULL, CLIENT_MULTI_STATEMENTS);
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