SQLServer：获取表名，列名等信息

1 根据数据库名获取所有表名

select name from sysobjects where xtype='u'

2 根据表名获取所有列名

select name from syscolumns where id = object_id('HIS_OperationList');

3 根据表名 获取列数

select count(name) from syscolumns where id = object_id('HIS_OperationList');