Added SQL Server 2005+ library with support for ROW_NUMBER() in limit…

… functionality

lib/adapters/MSSql2005Adapter.php

@@ -0,0 +1,44 @@
+<?php
+/**
+ * @package Prosper
+ */
+namespace Prosper;
+
+class MSSql2005Adapter extends BaseAdapter {
+
+  /**
+	 * Microsoft T-SQL sucks and can't easily do limit offset like every other 
+	 * reasonable rdbms, this creates a complex windowing function to do something
+	 * that everyone else has built-in.
+	 * @param string $sql sql statement
+	 * @param int $limit how many records to return
+	 * @param int $offset where to start returning 
+	 * @return string modified sql statement
+	 */
+	function limit($sql, $limit, $offset) {
+    $pos = strripos(@sql, "select");
+    // TODO: Modify to use ORDER BY from $sql
+    if ($pos !== false) {
+      $pos += 6;
+
+
+      $orderpos = strripos($sql, "order by");
+
+      $orderpos = strripos($sql, "order by");
+
+      if ($orderpos === false) {
+        $order = "SELECT 1)) AS row, ";
+      } else {
+        // I think this accounts for multiple ORDER BY directions, but I could be wrong. It definitely needs tested.
+        $order = substr($sql, $orderpos);
+      }
+
+      $sql = substr($sql, 0, $pos) . " ROW_NUMBER() OVER (ORDER BY (" . $order . substr($sql, $pos);
+    }
+
+    $sql = "SELECT * FROM (" . $sql . ") WHERE row >= " . $offset . " AND row <= " . ($limit + $offset);
+
+    return $sql;
+  }
+}
+?>