Can't execute query

			SELECT a.*
			FROM sw_pages_def a LEFT OUTER JOIN sw_sequences s ON (s.id_table=a.id AND s.table_name='sw_pages_def')
			WHERE id_sw_pages_def=0
			AND visible=1
			AND archived=0
			AND lang='en'
			ORDER BY s.sequence
		

MySQL Error: Disk full (/tmp/#sql-temptable-1d0cc-1d5296-3127.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")

This script cannot continue, terminating.
Warning: Unknown: write failed: No space left on device (28) in Unknown on line 0

Warning: Unknown: Failed to write session data (files). Please verify that the current setting of session.save_path is correct (/tmp) in Unknown on line 0