'select c.字段名,x.字段名 as 改为新的显示名,x.字段名 from 表名1 b,表名2 c,表名3 x where b.字段id=' . $id . ' and b.`字段id`=c.`字段id` and c.`字段id`=x.`字段id`';
'select c.字段名,x.字段名 as 改为新的显示名,x.字段名 from 表名1 b,表名2 c,表名3 x where b.字段id=' . $id . ' and b.`字段id`=c.`字段id` and c.`字段id`=x.`字段id`';