diff --git a/activemodel/lib/active_model/type/helpers/numeric.rb b/activemodel/lib/active_model/type/helpers/numeric.rb
index a481151ebdb..5b1db1f36b6 100644
--- a/activemodel/lib/active_model/type/helpers/numeric.rb
+++ b/activemodel/lib/active_model/type/helpers/numeric.rb
@@ -7,7 +7,6 @@ module ActiveModel
         def serialize(value)
           cast(value)
         end
-        alias :unchecked_serialize :serialize
 
         def cast(value)
           # Checks whether the value is numeric. Spaceship operator
diff --git a/activemodel/lib/active_model/type/value.rb b/activemodel/lib/active_model/type/value.rb
index 6b406f8349f..1bcebe1b6b7 100644
--- a/activemodel/lib/active_model/type/value.rb
+++ b/activemodel/lib/active_model/type/value.rb
@@ -53,7 +53,6 @@ module ActiveModel
       def serialize(value)
         value
       end
-      alias :unchecked_serialize :serialize
 
       # Type casts a value for schema dumping. This method is private, as we are
       # hoping to remove it entirely.
diff --git a/activerecord/lib/active_record/enum.rb b/activerecord/lib/active_record/enum.rb
index 1a94a0a349d..54463c9e883 100644
--- a/activerecord/lib/active_record/enum.rb
+++ b/activerecord/lib/active_record/enum.rb
@@ -146,7 +146,6 @@ module ActiveRecord
       def serialize(value)
         mapping.fetch(value, value)
       end
-      alias :unchecked_serialize :serialize
 
       def assert_valid_value(value)
         unless serializable?(value)
diff --git a/activerecord/lib/arel/nodes/homogeneous_in.rb b/activerecord/lib/arel/nodes/homogeneous_in.rb
index 98b69d1f145..fe97894a0fc 100644
--- a/activerecord/lib/arel/nodes/homogeneous_in.rb
+++ b/activerecord/lib/arel/nodes/homogeneous_in.rb
@@ -44,7 +44,7 @@ module Arel # :nodoc: all
         type = attribute.type_caster
 
         casted_values = values.map do |raw_value|
-          type.unchecked_serialize(raw_value) if type.serializable?(raw_value)
+          type.serialize(raw_value) if type.serializable?(raw_value)
         end
 
         casted_values.compact!
diff --git a/activerecord/lib/arel/visitors/to_sql.rb b/activerecord/lib/arel/visitors/to_sql.rb
index b0e92a9b5af..9c2bd307ed3 100644
--- a/activerecord/lib/arel/visitors/to_sql.rb
+++ b/activerecord/lib/arel/visitors/to_sql.rb
@@ -327,9 +327,9 @@ module Arel # :nodoc: all
           collector << quote_table_name(o.table_name) << "." << quote_column_name(o.column_name)
 
           if o.type == :in
-            collector << "IN ("
+            collector << " IN ("
           else
-            collector << "NOT IN ("
+            collector << " NOT IN ("
           end
 
           values = o.casted_values.map { |v| @connection.quote(v) }
diff --git a/activerecord/test/cases/relation/where_test.rb b/activerecord/test/cases/relation/where_test.rb
index 817b44faf51..18e086690c4 100644
--- a/activerecord/test/cases/relation/where_test.rb
+++ b/activerecord/test/cases/relation/where_test.rb
@@ -366,6 +366,12 @@ module ActiveRecord
       assert_equal 0, count
     end
 
+    def test_where_with_emoji_for_binary_column
+      Binary.create!(data: "🥦")
+      assert Binary.where(data: ["🥦", "🍦"]).to_sql.include?("f09fa5a6")
+      assert Binary.where(data: ["🥦", "🍦"]).to_sql.include?("f09f8da6")
+    end
+
     def test_where_on_association_with_custom_primary_key
       author = authors(:david)
       essay = Essay.where(writer: author).first