C++ 访问控制台应用程序

Question

访问连接正常，执行 SQL 查询，我得到 SQL 成功响应。 我不能再这样做了。 如何从 sql 查询中获取数据

int bdacess(int argc, char* argv[])
{
    /* Allocate an environment handle */
    rc = SQLAllocEnv(&hEnv);
    /* Allocate a connection handle */
    rc = SQLAllocConnect(hEnv, &hDbc);

    /* Connect to the database */
    rc = SQLDriverConnect(hDbc, NULL, (WCHAR*)szDSN, SQL_NTS, (WCHAR*)szConnStrOut, 255, (SQLSMALLINT*)&iConnStrLength2Ptr, SQL_DRIVER_NOPROMPT);

    if (SQL_SUCCEEDED(rc))
    {
        wprintf(L"Successfully connected to database. Data source name: \n  %s\n", szConnStrOut);

        /* Prepare SQL query */
        wprintf(L"SQL query:\n  %s\n", query);

        rc = SQLAllocStmt(hDbc, &hStmt);
        rc = SQLPrepare(hStmt, query, SQL_NTS);
   
        /* Excecute the query */
        rc = SQLExecute(hStmt);
        if (SQL_SUCCEEDED(rc))
        {
            wprintf(L"SQL Success\n");
        }
        else {
            wprintf(L"SQL Failed\n");
        }
    }
    else
    {
        wprintf(L"Couldn't connect to %s.\n", szDSN);
    }

    /* Disconnect and free up allocated handles */
    SQLDisconnect(hDbc);
    SQLFreeHandle(SQL_HANDLE_DBC, hDbc);
    SQLFreeHandle(SQL_HANDLE_ENV, hEnv);

    getchar();
    return 0;
}

sql 本身执行的结果我拿不到

Answer 1

感谢您的帮助，弄明白了，它帮助了我 SQLFetch