r00tkit
دوشنبه 26 اردیبهشت 1390, 07:47 صبح
سلام
قبلش باید با چند تا مفهوم اشنا بشی تا این سوال رو نپرسی
TC is dead
کد زیر رو فقط به عنوان مثال داشته باش ( اتصال به SQL server با C/C++
d#include <iostream>
#include <windows.h>
#include <sqltypes.h>
#include <sql.h>
#include <sqlext.h>
using namespace std;
void show_error(unsigned int handletype, const SQLHANDLE& handle){
SQLCHAR sqlstate[1024];
SQLCHAR message[1024];
if(SQL_SUCCESS == SQLGetDiagRec(handletype, handle, 1, sqlstate, NULL, message, 1024, NULL))
cout<<"Message: "<<message<<"\nSQLSTATE: "<<sqlstate<<endl;
}
int main(){
SQLHANDLE sqlenvhandle;
SQLHANDLE sqlconnectionhandle;
SQLHANDLE sqlstatementhandle;
SQLRETURN retcode;
if(SQL_SUCCESS!=SQLAllocHandle(SQL_HANDLE_ENV, SQL_NULL_HANDLE, &sqlenvhandle))
goto FINISHED;
if(SQL_SUCCESS!=SQLSetEnvAttr(sqlenvhandle,SQL_ATT R_ODBC_VERSION, (SQLPOINTER)SQL_OV_ODBC3, 0))
goto FINISHED;
if(SQL_SUCCESS!=SQLAllocHandle(SQL_HANDLE_DBC, sqlenvhandle, &sqlconnectionhandle))
goto FINISHED;
SQLCHAR retconstring[1024];
switch(SQLDriverConnect (sqlconnectionhandle,
NULL,
(SQLCHAR*)"DRIVER={SQL Server};SERVER=localhost, 1433;DATABASE=MyDatabase;UID=sa;PWD=Admin-123;",
SQL_NTS,
retconstring,
1024,
NULL,
SQL_DRIVER_NOPROMPT)){
case SQL_SUCCESS_WITH_INFO:
show_error(SQL_HANDLE_DBC, sqlconnectionhandle);
break;
case SQL_INVALID_HANDLE:
case SQL_ERROR:
show_error(SQL_HANDLE_DBC, sqlconnectionhandle);
goto FINISHED;
default:
break;
}
if(SQL_SUCCESS!=SQLAllocHandle(SQL_HANDLE_STMT, sqlconnectionhandle, &sqlstatementhandle))
goto FINISHED;
if(SQL_SUCCESS!=SQLExecDirect(sqlstatementhandle, (SQLCHAR*)"select * from testtable", SQL_NTS)){
show_error(SQL_HANDLE_STMT, sqlstatementhandle);
goto FINISHED;
}
else{
char name[64];
char address[64];
int id;
while(SQLFetch(sqlstatementhandle)==SQL_SUCCESS){
SQLGetData(sqlstatementhandle, 1, SQL_C_ULONG, &id, 0, NULL);
SQLGetData(sqlstatementhandle, 2, SQL_C_CHAR, name, 64, NULL);
SQLGetData(sqlstatementhandle, 3, SQL_C_CHAR, address, 64, NULL);
cout<<id<<" "<<name<<" "<<address<<endl;
}
}
FINISHED:
SQLFreeHandle(SQL_HANDLE_STMT, sqlstatementhandle );
SQLDisconnect(sqlconnectionhandle);
SQLFreeHandle(SQL_HANDLE_DBC, sqlconnectionhandle);
SQLFreeHandle(SQL_HANDLE_ENV, sqlenvhandle);
}
اینم بخونی بد نیست :
http://www.easysoft.com/developer/languages/c/odbc_tutorial.html