explicitly allowing lolqueries

activerecord/lib/active_record/relation/query_methods.rb

@@ -209,16 +209,7 @@ def custom_join_ast(table, joins)
     def collapse_wheres(arel, wheres)
       equalities = wheres.grep(Arel::Nodes::Equality)
 
-      groups = equalities.group_by do |equality|
-        equality.left
-      end
-
-      groups.each do |_, eqls|
-        test = eqls.inject(eqls.shift) do |memo, expr|
-          memo.or(expr)
-        end
-        arel.where(test)
-      end
+      arel.where(Arel::Nodes::And.new(equalities)) unless equalities.empty?
 
       (wheres - equalities).each do |where|
         where = Arel.sql(where) if String === where

activerecord/test/cases/relations_test.rb

@@ -474,10 +474,17 @@ def test_find_all_using_where_twice_should_or_the_relation
     relation = relation.where(:name => david.name)
     relation = relation.where(:name => 'Santiago')
     relation = relation.where(:id => david.id)
-    assert_equal [david], relation.all
+    assert_equal [], relation.all
   end
 
-  def test_find_all_with_multiple_ors
+  def test_multi_where_ands_queries
+    relation = Author.unscoped
+    david = authors(:david)
+    sql = relation.where(:name => david.name).where(:name => 'Santiago').to_sql
+    assert_match('AND', sql)
+  end
+
+  def test_find_all_with_multiple_should_use_and
     david = authors(:david)
     relation = [
       { :name => david.name },
@@ -486,7 +493,7 @@ def test_find_all_with_multiple_ors
     ].inject(Author.unscoped) do |memo, param|
       memo.where(param)
     end
-    assert_equal [david], relation.all
+    assert_equal [], relation.all
   end
 
   def test_find_all_using_where_with_relation