diff --git a/lib/rebel/sql.rb b/lib/rebel/sql.rb
index a64fc3b..9d39164 100644
--- a/lib/rebel/sql.rb
+++ b/lib/rebel/sql.rb
@@ -132,6 +132,7 @@ module Rebel::SQL
       end
     end
     alias != ne
+    alias is_not ne
 
     def lt(n)
       Raw.new("#{self} < #{Rebel::SQL.name_or_value(n)}")
@@ -157,9 +158,17 @@ module Rebel::SQL
       Raw.new("#{self} IN (#{Rebel::SQL.values(*v)})")
     end
 
+    def not_in(*v)
+      Raw.new("#{self} NOT IN (#{Rebel::SQL.values(*v)})")
+    end
+
     def like(n)
       Raw.new("#{self} LIKE #{Rebel::SQL.value(n)}")
     end
+
+    def not_like(n)
+      Raw.new("#{self} NOT LIKE #{Rebel::SQL.value(n)}")
+    end
   end
 
   @identifier_quote = '"'
diff --git a/test/test_raw.rb b/test/test_raw.rb
index 1909f79..0906735 100644
--- a/test/test_raw.rb
+++ b/test/test_raw.rb
@@ -40,6 +40,12 @@ class TestRaw < Minitest::Test
     assert_sql('"foo" = "bar"') { name(:foo).is(name(:bar)) }
   end
 
+  def test_is_not
+    assert_sql('"foo" IS NOT NULL') { name(:foo).is_not(nil) }
+    assert_sql('"foo" != 42') { name(:foo).is_not(42) }
+    assert_sql('"foo" != "bar"') { name(:foo).is_not(name(:bar)) }
+  end
+
   def test_eq
     assert_sql('"foo" IS NULL') { name(:foo).eq(nil) }
     assert_sql('"foo" IS NULL') { name(:foo) == nil }
@@ -78,10 +84,18 @@ class TestRaw < Minitest::Test
     assert_sql('"foo" IN (1, 2, 3)') { name(:foo).in(1, 2, 3) }
   end
 
+  def test_not_in
+    assert_sql('"foo" NOT IN (1, 2, 3)') { name(:foo).not_in(1, 2, 3) }
+  end
+
   def test_like
     assert_sql(%("foo" LIKE '%bar%')) { name(:foo).like('%bar%') }
   end
 
+  def test_not_like
+    assert_sql(%("foo" NOT LIKE '%bar%')) { name(:foo).not_like('%bar%') }
+  end
+
   def test_where
     assert_sql('WHERE "foo" = 1 AND "bar" = 2 AND "baz" = 3') { where?(foo: 1, bar: 2, baz: 3) }
     assert_sql('WHERE ("foo" = 1 OR "bar" = 2) AND "baz" = 3') { where?(name(:foo).eq(1).or(name(:bar).eq(2)), name(:baz).eq(3)) }