Module: ActiveRecord::ConnectionAdapters::Mysql2::DatabaseStatements

# File 'activerecord/lib/active_record/connection_adapters/mysql2/database_statements.rb', line 82

def cast_result(result)
  if result.nil? || result.fields.empty?
    ActiveRecord::Result.empty
  else
    ActiveRecord::Result.new(result.fields, result.to_a)
  end
end

# File 'activerecord/lib/active_record/connection_adapters/mysql2/database_statements.rb', line 17

def execute_batch(statements, name = nil, **kwargs)
  combine_multi_statements(statements).each do |statement|
    raw_execute(statement, name, batch: true, **kwargs)
  end
end

# File 'activerecord/lib/active_record/connection_adapters/mysql2/database_statements.rb', line 23

def last_inserted_id(result)
  if supports_insert_returning?
    super
  else
    @raw_connection&.last_id
  end
end

# File 'activerecord/lib/active_record/connection_adapters/mysql2/database_statements.rb', line 41

def perform_query(raw_connection, sql, binds, type_casted_binds, prepare:, notification_payload:, batch: false)
  reset_multi_statement = if batch && !multi_statements_enabled?
    raw_connection.set_server_option(::Mysql2::Client::OPTION_MULTI_STATEMENTS_ON)
    true
  end

  # Make sure we carry over any changes to ActiveRecord.default_timezone that have been
  # made since we established the connection
  raw_connection.query_options[:database_timezone] = default_timezone

  result = if prepare
    stmt = @statements[sql] ||= raw_connection.prepare(sql)

    begin
      ActiveSupport::Dependencies.interlock.permit_concurrent_loads do
        stmt.execute(*type_casted_binds)
      end
    rescue ::Mysql2::Error
      @statements.delete(sql)
      stmt.close
      raise
    end
    verified!
  else
    raw_connection.query(sql)
  end

  notification_payload[:row_count] = result&.size || 0

  @affected_rows_before_warnings = raw_connection.affected_rows
  raw_connection.abandon_results!

  verified!
  handle_warnings(sql)
  result
ensure
  if reset_multi_statement && active?
    raw_connection.set_server_option(::Mysql2::Client::OPTION_MULTI_STATEMENTS_OFF)
  end
end

# File 'activerecord/lib/active_record/connection_adapters/mysql2/database_statements.rb', line 8

def select_all(*, **) # :nodoc:
  if ExplainRegistry.collect? && prepared_statements
    unprepared_statement { super }
  else
    super
  end
end