/*
    test case
*/
#include <windows.h>

#include <sql.h>
#include <sqlext.h>
#include <stdio.h>
#include <string.h>
#include <stdlib.h>


void CheckRC(SQLRETURN rc, char* msg, char* filename, int lineno);
#define CHECKRC(FUNCSHN,MSG) CheckRC(FUNCSHN, MSG, __FILE__, __LINE__)

SQLHENV     hEnv = SQL_NULL_HENV;
SQLHDBC     hDbc = SQL_NULL_HDBC;
SQLHSTMT    hStmt = SQL_NULL_HSTMT;
SQLCHAR*    connString;
SQLCHAR     connOut[255]; /* buffer for connection output */
SQLSMALLINT szConnOut; /* num bytes returned in connOut */
SQLINTEGER Version = SQL_OV_ODBC3;

void doDrop()
{   
    CHECKRC( SQLAllocStmt(hDbc, &hStmt), "SQLAllocStmt()" );
    CHECKRC( SQLExecDirect(hStmt, (SQLCHAR*)"DROP TABLE IF EXISTS test.qq_big", SQL_NTS), "SQLExecDirect()" );
    CHECKRC( SQLFreeStmt(hStmt, SQL_DROP), "SQLFreeStmt()" );
}

void doCreate()
{   int k;
    SQLCHAR pszSQL[256];

    CHECKRC( SQLAllocStmt(hDbc, &hStmt), "SQLAllocStmt()" );
    CHECKRC( SQLExecDirect(hStmt, (SQLCHAR*)"CREATE TABLE test.qq_big (F1 INTEGER NOT NULL, F2 VARCHAR(255) NULL )", SQL_NTS), "SQLExecDirect()" );

    printf("Fill base....\n");

    for (k=1; k<100000; k++)
//    for (k=1; k<100; k++)
    {
       sprintf(&pszSQL,"INSERT INTO test.qq_big (F1,F2) value(%i,'string value %i is %i');",k,k,k);
       CHECKRC(SQLExecDirect(hStmt,pszSQL, SQL_NTS),"SQLExecDirect()");
       printf("inserted %i\r",k);
    }
    CHECKRC( SQLFreeStmt(hStmt, SQL_DROP), "SQLFreeStmt()" );

}


void doTest()
{
    SQLINTEGER  cbD;
    SQLINTEGER  F1;
    SIZE_T size1,size2;
    MEMORYSTATUS stat1,stat2;

    printf("Test....\n");

 
    GlobalMemoryStatus (&stat1);
    size1 = stat1.dwAvailVirtual;

    CHECKRC( SQLAllocStmt(hDbc, &hStmt), "SQLAllocStmt()" );

    CHECKRC(SQLPrepare (hStmt, (SQLCHAR *) "SELECT F1 FROM test.qq_big", SQL_NTS), "SQLPrepare()" );

    CHECKRC(SQLExecute(hStmt),"SQLExecute()" );

    GlobalMemoryStatus (&stat2);
    size2 = stat2.dwAvailVirtual;

    CHECKRC(SQLFetch(hStmt),"SQLFetch()" );

    CHECKRC(SQLGetData (hStmt, 1, SQL_C_SLONG, &F1, 0, &cbD), "SQLGetData()");

    printf("Value = %i \n",F1);


    CHECKRC( SQLFreeStmt(hStmt, SQL_DROP), "SQLFreeStmt()" );

    printf("Memory was in use = %i %i %i \n",size1,size2,size1-size2);

}

int main(int argc, char** argv)
{
    int nPrompt = SQL_DRIVER_NOPROMPT;

    if (argc < 2 || strlen(argv[1]) == 0)
    {
        connString = (SQLCHAR *)"DRIVER=MySQL ODBC 3.51 Driver;";
    }
    else
        connString = (SQLCHAR *)argv[1];

    if (SQLAllocEnv(&hEnv) != SQL_SUCCESS)
    {
        fprintf(stderr, "Unable to allocate SQLHENV\n");
        return(1);
    }

    printf("Connect....\n");
    SQLAllocEnv(&hEnv);
    CHECKRC( SQLSetEnvAttr(hEnv,SQL_ATTR_ODBC_VERSION,Version,0 ), "SQLSetEnvAttr()" );
    CHECKRC( SQLAllocConnect(hEnv, &hDbc), "SQLAllocConnect()" );
    CHECKRC( SQLDriverConnect(hDbc, (HWND)0, connString, SQL_NTS, connOut, 255, &szConnOut, nPrompt), "SQLDriverConnect()" );

    doDrop();
    doCreate();
    doTest();

    printf("Disconnect....\n");
    CHECKRC( SQLDisconnect(hDbc), "SQLDisconnect()" );
    CHECKRC( SQLFreeConnect(hDbc), "SQLFreeConnect()" );
    CHECKRC( SQLFreeEnv(hEnv), "SQLFreeEnv()" );

    return 0;
}

void CheckRC(SQLRETURN rc, char* msg, char* filename, int lineno)
{
#define MSG_LNG 512

    SQLCHAR     szSqlState[MSG_LNG];
    SQLINTEGER  pfNativeError;
    SQLCHAR     szErrorMsg[MSG_LNG];
    SQLSMALLINT pcbErrorMsg;
    SQLRETURN   ret = SQL_SUCCESS;

    int error = 0;

    if (rc != SQL_SUCCESS && rc != SQL_NO_DATA_FOUND)
    {
        if (rc != SQL_SUCCESS_WITH_INFO)
        {
            fprintf(stderr, "\nERROR (%s:%d): %s\n",
                    filename, lineno, msg);
            error = 1;
        }

        while (ret == SQL_SUCCESS || ret == SQL_SUCCESS_WITH_INFO)
        {
            ret = SQLError(hEnv, hDbc, hStmt,
                           szSqlState, &pfNativeError,
                           szErrorMsg, MSG_LNG,
                           &pcbErrorMsg);
            switch (ret)
            {
                case SQL_SUCCESS:  
                    if (rc == SQL_SUCCESS_WITH_INFO)
                    {
                        fprintf(stderr, "\nINFO: (%s:%d): %s\n",
                                filename, lineno, msg);
                    }
                    fprintf(stderr, 
                            "*** %s\n*** ODBC Code: %s, "
                            "Driver Code: %ld\n\n",
                            szErrorMsg, szSqlState, pfNativeError);
                    break;
                case SQL_NO_DATA_FOUND:
                    break;
                default:
                    fprintf(stderr,
                            "*** SQLError() failed with code=%d\n\n", ret);
                    break;
            }
        }
    }
    if (error) exit(1);
}