Add back "AS count_table" alias to paginate_by_sql counter SQL

Oh damn, turns out alias is needed for other RDBMS (thanks Matt Murphy)

This reverts commit 6dc60a9.

lib/will_paginate/finder.rb

@@ -140,6 +140,10 @@ def paginate_by_sql(sql, options)
           unless pager.total_entries
             count_query = original_query.sub /\bORDER\s+BY\s+[\w`,\s]+$/mi, ''
             count_query = "SELECT COUNT(*) FROM (#{count_query})"
+
+            unless ['oracle', 'oci'].include?(self.connection.adapter_name.downcase)
+              count_query << ' AS count_table'
+            end
             # perform the count query
             pager.total_entries = count_by_sql(count_query)
           end

test/finder_test.rb

@@ -363,7 +363,7 @@ def test_should_use_scoped_finders_if_present
     def test_paginate_by_sql
       assert_respond_to Developer, :paginate_by_sql
       Developer.expects(:find_by_sql).with(regexp_matches(/sql LIMIT 3(,| OFFSET) 3/)).returns([])
-      Developer.expects(:count_by_sql).with('SELECT COUNT(*) FROM (sql)').returns(0)
+      Developer.expects(:count_by_sql).with('SELECT COUNT(*) FROM (sql) AS count_table').returns(0)
 
       entries = Developer.paginate_by_sql 'sql', :page => 2, :per_page => 3
     end
@@ -378,7 +378,7 @@ def test_paginate_by_sql_respects_total_entries_setting
 
     def test_paginate_by_sql_strips_order_by_when_counting
       Developer.expects(:find_by_sql).returns([])
-      Developer.expects(:count_by_sql).with("SELECT COUNT(*) FROM (sql\n )").returns(0)
+      Developer.expects(:count_by_sql).with("SELECT COUNT(*) FROM (sql\n ) AS count_table").returns(0)
 
       Developer.paginate_by_sql "sql\n ORDER\nby foo, bar, `baz` ASC", :page => 2
     end