select name tablename from jsj01..sysobjects where type='U' and name not in ('dtproperties')
--查询表里的字段信息
---docs为表名 ---- select * from syscolumns where id = object_id('docs')
----查询数据库中所有类型 ----select name,xtype from systypes
----两表联查，显示表中所有字段和对应的数据类型
----syscolumns里字段‘xtype' 对应 systypes里的 ‘xusertype' ,systypes 里的‘name'字段就是字段的数据类型 ----docs 为表名 select a.name as fieldname,b.name as type from syscolumns as a join systypes as b on a.xtype = b.xusertype where id=object_id('docs')
----docs为数据表名 ： 查询表字段、类型、说明
select a.name fieldname,b.name type,c.value comment from syscolumns as a full join systypes as b on a.xtype = b.xusertype full join ::fn_listextendedproperty(NULL, 'user', 'dbo', 'table', 'docs', 'column', default) as c ----这是2000版本，2005把user改为schema on a.name=c.objname COLLATE Chinese_PRC_CI_AS -----排序规则（有时不加也可以，如果两表的排序规则不同，则会报错） --join sysproperties c --on a.id=c.major_id where id=object_id('docs')
select column_name as primarykey,* from [jsj01].INFORMATION_SCHEMA.KEY_COLUMN_USAGE where Table_name='docs' and constraint_name like 'fk_%'
--select * from sysobjects WHERE OBJECT_NAME(sysobjects.parent_obj)='docs' --and xtype='pk' --select * from sysconstraints where id = object_id('docs') --select * from syscolumns where id = object_id('docs') --select * from sysindexes --select * from sysindexkeys
----查询表中自动增长的字段，没有为空，如果有就只有一个 ----docs为表名
SELECT a.name column_name,b.name data_type FROM syscolumns a,systypes b WHERE a.id=object_id('docs') and a.xtype = b.xusertype AND a.autoval is not null
