Warning: mysql_query(): MySQL server has gone away in D:\wwwroot\qlhxjs\e\class\db_sql.php on line 15

Warning: mysql_query(): Error reading result set's header in D:\wwwroot\qlhxjs\e\class\db_sql.php on line 15
MySQL server has gone away
select id,type from ***_extend_linkage where id='0'