Index: class.ux_t3lib_sqlparser.php
===================================================================
--- class.ux_t3lib_sqlparser.php	(revision 28376)
+++ class.ux_t3lib_sqlparser.php	(working copy)
@@ -351,8 +351,8 @@
 							// Look for sublevel:
 						if (is_array($v['sub'])) {
 							$output .= ' (' . trim($this->compileWhereClause($v['sub'], $functionMapping)) . ')';
-						} elseif (isset($v['func'])) {
-							$output .= ' ' . trim($v['modifier']) . ' ' . $v['func']['type'] . ' (' . $this->compileSELECT($v['func']['subquery']) . ')';
+						} elseif (isset($v['func']) && $v['func']['type'] === 'EXISTS') {
+							$output .= ' ' . trim($v['modifier']) . ' EXISTS (' . $this->compileSELECT($v['func']['subquery']) . ')';
 						} else {
 
 								// Set field/table with modifying prefix if any:
Index: class.ux_t3lib_db.php
===================================================================
--- class.ux_t3lib_db.php	(revision 28377)
+++ class.ux_t3lib_db.php	(working copy)
@@ -1145,7 +1145,11 @@
 			if (is_array($where_clause[$k]['sub'])) {
 				$where_clause[$k]['sub'] = $this->_quoteWhereClause($where_clause[$k]['sub']);
 			} elseif (isset($v['func'])) {
-				$where_clause[$k]['func']['subquery'] = $this->quoteSELECTsubquery($v['func']['subquery']);
+				switch ($where_clause[$k]['func']['type']) {
+					case 'EXISTS':
+						$where_clause[$k]['func']['subquery'] = $this->quoteSELECTsubquery($v['func']['subquery']);
+						break;
+				}
 			} else {
 				if ($where_clause[$k]['table'] != '') {
 					$where_clause[$k]['table'] = $this->quoteName($where_clause[$k]['table']);
@@ -2601,10 +2605,14 @@
 				if (is_array($sqlPartArray[$k]['sub'])) {
 					$this->map_sqlParts($sqlPartArray[$k]['sub'], $defaultTable);	// Call recursively!
 				} elseif (isset($sqlPartArray[$k]['func'])) {
-					$subqueryDefaultTable = $sqlPartArray[$k]['func']['subquery']['FROM'][0]['table'];
-					$this->map_sqlParts($sqlPartArray[$k]['func']['subquery']['SELECT'], $subqueryDefaultTable);
-					$this->map_sqlParts($sqlPartArray[$k]['func']['subquery']['FROM'], $subqueryDefaultTable);
-					$this->map_sqlParts($sqlPartArray[$k]['func']['subquery']['WHERE'], $subqueryDefaultTable);
+					switch ($sqlPartArray[$k]['func']['type']) {
+						case 'EXISTS':
+							$subqueryDefaultTable = $sqlPartArray[$k]['func']['subquery']['FROM'][0]['table'];
+							$this->map_sqlParts($sqlPartArray[$k]['func']['subquery']['SELECT'], $subqueryDefaultTable);
+							$this->map_sqlParts($sqlPartArray[$k]['func']['subquery']['FROM'], $subqueryDefaultTable);
+							$this->map_sqlParts($sqlPartArray[$k]['func']['subquery']['WHERE'], $subqueryDefaultTable);
+							break;
+					}
 				} else {
 						// For the field, look for table mapping (generic):
 					$t = $sqlPartArray[$k]['table'] ? $sqlPartArray[$k]['table'] : $defaultTable;