fix insert with default values in Ruby 4.0 and Rails 8.1

Author: PNixx

CHANGELOG.md

@@ -1,3 +1,7 @@
+### Version 1.6.7 (Mar 5, 2026)
+
+* Fix insert with default values in Ruby 4.0 and Rails 8.1
+
 ### Version 1.6.6 (Feb 16, 2026)
 
 * Fix error: EOFError (end of file reached)

lib/active_record/connection_adapters/clickhouse/schema_statements.rb

@@ -78,7 +78,7 @@ def execute_to_file(sql, name = nil, format: @response_format, settings: {})
         def exec_insert(sql, name = nil, _binds = [], _pk = nil, _sequence_name = nil, returning: nil)
           new_sql = sql.sub(/ (DEFAULT )?VALUES/, " VALUES")
           with_response_format(nil) { execute(new_sql, name) }
-          true
+          nil
         end
 
         def internal_exec_query(sql, name = nil, binds = [], prepare: false, async: false, allow_retry: false)

lib/clickhouse-activerecord/rspec.rb

@@ -5,7 +5,7 @@
     original_connection_config = ActiveRecord::Base.connection_db_config
     ActiveRecord::Base.configurations.configurations.select { |x| x.env_name == Rails.env && x.adapter == 'clickhouse' }.each do |db_config|
       ActiveRecord::Base.establish_connection(db_config)
-      ActiveRecord::Base.connection.truncate_tables(*ActiveRecord::Base.connection.tables)
+      ActiveRecord::Base.connection.execute("TRUNCATE ALL TABLES FROM #{db_config.database}")
     end
     ActiveRecord::Base.establish_connection(original_connection_config)
   end

lib/clickhouse-activerecord/version.rb

@@ -1,3 +1,3 @@
 module ClickhouseActiverecord
-  VERSION = '1.6.6'
+  VERSION = '1.6.7'
 end

spec/fixtures/migrations/add_sample_data/1_create_sample_table.rb

@@ -12,6 +12,7 @@ def up
       t.string :byte_array
       t.uuid :relation_uuid
       t.decimal :decimal_value, precision: 38, scale: 16
+      t.datetime :ver, precision: 3, default: -> { 'now64()' }, null: false
     end
   end
 end