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-rw-r--r--activerecord/lib/active_record/connection_adapters/abstract_adapter.rb1
-rw-r--r--activerecord/lib/active_record/connection_adapters/postgresql/database_statements.rb2
2 files changed, 1 insertions, 2 deletions
diff --git a/activerecord/lib/active_record/connection_adapters/abstract_adapter.rb b/activerecord/lib/active_record/connection_adapters/abstract_adapter.rb
index 91ec921434..5ef434734a 100644
--- a/activerecord/lib/active_record/connection_adapters/abstract_adapter.rb
+++ b/activerecord/lib/active_record/connection_adapters/abstract_adapter.rb
@@ -1,5 +1,4 @@
require 'active_record/type'
-require 'active_support/core_ext/benchmark'
require 'active_record/connection_adapters/determine_if_preparable_visitor'
require 'active_record/connection_adapters/schema_cache'
require 'active_record/connection_adapters/sql_type_metadata'
diff --git a/activerecord/lib/active_record/connection_adapters/postgresql/database_statements.rb b/activerecord/lib/active_record/connection_adapters/postgresql/database_statements.rb
index 6aa264d766..6f2e03b370 100644
--- a/activerecord/lib/active_record/connection_adapters/postgresql/database_statements.rb
+++ b/activerecord/lib/active_record/connection_adapters/postgresql/database_statements.rb
@@ -118,7 +118,7 @@ module ActiveRecord
alias :exec_update :exec_delete
def sql_for_insert(sql, pk, id_value, sequence_name, binds) # :nodoc:
- unless pk
+ if pk.nil?
# Extract the table from the insert sql. Yuck.
table_ref = extract_table_ref_from_insert_sql(sql)
pk = primary_key(table_ref) if table_ref