diff -r b72c6db6890b -r 5dc02b23752f src/sql/drivers/odbc/qsql_odbc.cpp
--- a/src/sql/drivers/odbc/qsql_odbc.cpp	Wed Jun 23 19:07:03 2010 +0300
+++ b/src/sql/drivers/odbc/qsql_odbc.cpp	Tue Jul 06 15:10:48 2010 +0300
@@ -62,15 +62,8 @@
 // undefine this to prevent initial check of the ODBC driver
 #define ODBC_CHECK_DRIVER
 
-#if defined(Q_ODBC_VERSION_2)
-//crude hack to get non-unicode capable driver managers to work
-# undef UNICODE
-# define SQLTCHAR SQLCHAR
-# define SQL_C_TCHAR SQL_C_CHAR
-#endif
-
 // newer platform SDKs use SQLLEN instead of SQLINTEGER
-#if defined(WIN32) && (_MSC_VER < 1300)
+#if defined(WIN32) && (_MSC_VER < 1300) && !defined(__MINGW64_VERSION_MAJOR)
 # define QSQLLEN SQLINTEGER
 # define QSQLULEN SQLUINTEGER
 #else
@@ -343,13 +336,11 @@
     case SQL_TYPE_TIMESTAMP:
         type = QVariant::DateTime;
         break;
-#ifndef Q_ODBC_VERSION_2
     case SQL_WCHAR:
     case SQL_WVARCHAR:
     case SQL_WLONGVARCHAR:
         type = QVariant::String;
         break;
-#endif
     case SQL_CHAR:
     case SQL_VARCHAR:
 #if (ODBCVER >= 0x0350)
@@ -669,17 +660,9 @@
 
 static int qGetODBCVersion(const QString &connOpts)
 {
-#ifndef Q_ODBC_VERSION_2
     if (connOpts.contains(QLatin1String("SQL_ATTR_ODBC_VERSION=SQL_OV_ODBC3"), Qt::CaseInsensitive))
         return SQL_OV_ODBC3;
-#endif
-    if (connOpts.contains(QLatin1String("SQL_ATTR_ODBC_VERSION=SQL_OV_ODBC2"), Qt::CaseInsensitive))
-        return SQL_OV_ODBC2;
-#ifdef _IODBCUNIX_H
-    return SQL_OV_ODBC3;
-#else
     return SQL_OV_ODBC2;
-#endif
 }
 
 QChar QODBCDriverPrivate::quoteChar()
@@ -780,7 +763,6 @@
                 continue;
             }
             r = SQLSetConnectAttr(hDbc, SQL_ATTR_TRACE, (SQLPOINTER) v, 0);
-#ifndef Q_ODBC_VERSION_2
         } else if (opt.toUpper() == QLatin1String("SQL_ATTR_CONNECTION_POOLING")) {
             if (val == QLatin1String("SQL_CP_OFF"))
                 v = SQL_CP_OFF;
@@ -807,7 +789,6 @@
                 continue;
             }
             r = SQLSetConnectAttr(hDbc, SQL_ATTR_CP_MATCH, (SQLPOINTER)v, 0);
-#endif
         } else if (opt.toUpper() == QLatin1String("SQL_ATTR_ODBC_VERSION")) {
             // Already handled in QODBCDriver::open()
             continue;
@@ -1529,7 +1510,6 @@
                                       *ind == SQL_NULL_DATA ? ind : NULL);
                 break;
             case QVariant::String:
-#ifndef Q_ODBC_VERSION_2
                 if (d->unicode) {
                     QString str = val.toString();
                     if (*ind != SQL_NULL_DATA)
@@ -1567,7 +1547,6 @@
                     break;
                 }
                 else
-#endif
                 {
                     QByteArray str = val.toString().toUtf8();
                     if (*ind != SQL_NULL_DATA)
@@ -1973,11 +1952,6 @@
 // as two byte unicode characters
 void QODBCDriverPrivate::checkUnicode()
 {
-#if defined(Q_ODBC_VERSION_2)
-    unicode = false;
-    return;
-#endif
-
     SQLRETURN   r;
     SQLUINTEGER fFunc;