(1)查询yuangong表的所有记录。SQL代码：select * from yuangong;或者列出yuangong表的所有字段名称。SQL代码：select id,name,sex,birthday,d_id,salary,address from yuangong;(2)查询yuangong表的第四条到第五条记录。select id,name,sex,birthday,d_id,salary,address from yuangong limit 3,2;(3)从bum...