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diff --git a/Frameworks/QueryKit/Source/QKQueryUtilities.m b/Frameworks/QueryKit/Source/QKQueryUtilities.m
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+++ b/Frameworks/QueryKit/Source/QKQueryUtilities.m
@@ -0,0 +1,96 @@
+//
+//  $Id: QKQueryUtilities.m 3421 2011-09-10 22:58:45Z stuart02 $
+//
+//  QKQueryUtilities.m
+//  sequel-pro
+//
+//  Created by Stuart Connolly (stuconnolly.com) on September 4, 2011
+//  Copyright (c) 2011 Stuart Connolly. All rights reserved.
+//
+//  Permission is hereby granted, free of charge, to any person
+//  obtaining a copy of this software and associated documentation
+//  files (the "Software"), to deal in the Software without
+//  restriction, including without limitation the rights to use,
+//  copy, modify, merge, publish, distribute, sublicense, and/or sell
+//  copies of the Software, and to permit persons to whom the
+//  Software is furnished to do so, subject to the following
+//  conditions:
+//
+//  The above copyright notice and this permission notice shall be
+//  included in all copies or substantial portions of the Software.
+//
+//  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+//  EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+//  OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+//  NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+//  HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+//  WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+//  FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+//  OTHER DEALINGS IN THE SOFTWARE.
+//
+//  More info at <http://code.google.com/p/sequel-pro/>
+
+#import "QKQueryUtilities.h"
+
+static NSString *QKUnrecognisedQueryOperatorException = @"QKUnrecognisedQueryOperator";
+
+@implementation QKQueryUtilities
+
+/**
+ * Returns a string representation of the supplied operator type.
+ *
+ * @param operator The operator
+ *
+ * @return A string represenation of the operator.
+ */
++ (NSString *)operatorRepresentationForType:(QKQueryOperator)operator
+{
+	NSString *opString = nil;
+	
+	switch (operator) 
+	{
+		case QKEqualityOperator:
+			opString = @"=";
+			break;
+		case QKNotEqualOperator:
+			opString = @"!=";
+			break;
+		case QKLikeOperator:
+			opString = @"LIKE";
+			break;
+		case QKNotLikeOperator:
+			opString = @"NOT LIKE";
+			break;
+		case QKInOperator:
+			opString = @"IN";
+			break;
+		case QKNotInOperator:
+			opString = @"NOT IN";
+			break;
+		case QKIsNullOperator:
+			opString = @"IS NULL";
+			break;
+		case QKIsNotNullOperator:
+			opString = @"IS NOT NULL";
+			break;
+		case QKGreaterThanOperator:
+			opString = @">";
+			break;
+		case QKLessThanOperator:
+			opString = @"<";
+			break;
+		case QKGreaterThanOrEqualOperator:
+			opString = @">=";
+			break;
+		case QKLessThanOrEqualOperator:
+			opString = @"<=";
+			break;
+		default:
+			[NSException raise:QKUnrecognisedQueryOperatorException format:@"Unrecognised query operator type: %d", operator];
+			break;
+	}
+	
+	return opString;
+}
+
+@end