diff -u -r src/com/mysql/jdbc/ResultSetImpl.java src.new/com/mysql/jdbc/ResultSetImpl.java
--- src/com/mysql/jdbc/ResultSetImpl.java	2008-03-05 17:27:00.000000000 +0100
+++ src.new/com/mysql/jdbc/ResultSetImpl.java	2008-03-07 17:11:33.626024000 +0100
@@ -710,6 +710,7 @@
 		this.columnNameToIndex = new TreeMap(String.CASE_INSENSITIVE_ORDER);
 		this.fullColumnNameToIndex = new TreeMap(String.CASE_INSENSITIVE_ORDER);
 		
+		boolean useOldAlias = this.connection.getUseOldAliasMetadataBehavior();
 		
 		// We do this in reverse order, so that the 'first' column
 		// with a given name ends up as the final mapping in the
@@ -725,7 +726,16 @@
 		//
 		for (int i = numFields - 1; i >= 0; i--) {
 			Integer index = Constants.integerValueOf(i);
-			String columnName = this.fields[i].getName();
+			String columnName;
+			if (useOldAlias) { // Ensure that this in sync with ResultsetMetadata.getColumnName
+				columnName = this.fields[i].getName();
+			} else {
+				columnName = this.fields[i].getNameNoAliases();
+				
+				if (columnName != null && columnName.length() == 0) {
+					columnName = this.fields[i].getName();
+				}
+			}
 			String fullColumnName = this.fields[i].getFullName();
 
 			if (columnName != null) {			
@@ -1069,6 +1079,7 @@
 			buildIndexMapping();
 		}
 
+		
 		index = (Integer) this.columnNameToIndex.get(columnName);
 
 		if (index == null) {
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