Hi All,
I am experiencing some difficulties in executing the below query from c++ (Studio 2010) and will appreciate some assistance in a code:
while compiling I've got the warning message:
Run-Time Check Failure #3 - The variable 'sqlstatementhandle' is being used without being initialized, and I finally see displayed on the screen Message: 0052E144nSQLSTATE: 0052E94C, which is coming from the *cout* statement. I was expecting to see at least a list of prices for existing identifiers.
Thus, is there a way of getting the prices for my 3 identifiers into a matrix composed of 3 column vectors? this is an illustration, but I might have n identifiers (ISN) and will need to store the values (here ClosedPrice) into a (p by n) matrix.
Thanks in advance and regards
#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){
SQLWCHAR sqlstate[1024];
SQLWCHAR 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_ATTR_ODBC_VERSION, (SQLPOINTER)SQL_OV_ODBC3, 0))
goto FINISHED;
if(SQL_SUCCESS!=SQLAllocHandle(SQL_HANDLE_DBC, sqlenvhandle, &sqlconnectionhandle))
goto FINISHED;
SQLWCHAR retconstring[1024];
switch(SQLDriverConnect (sqlconnectionhandle,
NULL,
(SQLWCHAR*)"DRIVER={SQL Server};SERVER=IF\\SqlExpress, 1433;DATABASE=ProjectPhd;",
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, (SQLWCHAR*)"select * from SecurityData", SQL_NTS)){
show_error(SQL_HANDLE_STMT, sqlstatementhandle);
goto FINISHED;
}
else{
char ISN[64];
float ClosedPrice[64];
//int id;
while(SQLFetch(sqlstatementhandle)==SQL_SUCCESS){
//SQLGetData(sqlstatementhandle, 1, SQL_C_ULONG, &id, 0, NULL);
SQLGetData(sqlstatementhandle, 2, SQL_C_CHAR, ISN, 64, NULL);
SQLGetData(sqlstatementhandle, 3, SQL_C_CHAR, ClosedPrice, 64, NULL);
cout<<ISN<<" "<<ClosedPrice<<endl;
}
}
FINISHED:
SQLFreeHandle(SQL_HANDLE_STMT, sqlstatementhandle );
SQLDisconnect(sqlconnectionhandle);
SQLFreeHandle(SQL_HANDLE_DBC, sqlconnectionhandle);
SQLFreeHandle(SQL_HANDLE_ENV, sqlenvhandle);
}