Magento add PHP stack trace to SQL queries

gistfile1.diff

diff --git a/lib/Zend/Db/Statement/Pdo.php b/lib/Zend/Db/Statement/Pdo.php
index 4530897..3561d05 100644
--- a/lib/Zend/Db/Statement/Pdo.php
+++ b/lib/Zend/Db/Statement/Pdo.php
@@ -54,6 +54,7 @@ class Zend_Db_Statement_Pdo extends Zend_Db_Statement implements IteratorAggrega
      */
     protected function _prepare($sql)
     {
+        $sql = $this->_trace() . $sql;
         try {
             $this->_stmt = $this->_adapter->getConnection()->prepare($sql);
         } catch (PDOException $e) {
@@ -63,6 +64,22 @@ class Zend_Db_Statement_Pdo extends Zend_Db_Statement implements IteratorAggrega
     }

     /**
+     * Add a PHP stack trace comment to every SQL statement
+     *
+     * @return string Stack trace comment
+     */
+    protected function _trace() {
+        $trace = array();
+        foreach (debug_backtrace() as $call) {
+            if (isset($call['file']) && isset($call['line'])) {
+                $trace[] = $call['file'] . ' ' . $call['line'];
+            }
+        }
+
+        return "\n/*" . addslashes(implode("\n", $trace)) . "*/\n";
+    }
+
+    /**
      * Bind a column of the statement result set to a PHP variable.
      *
      * @param string $column Name the column in the result set, either by