--查询数据库中的所有表

select table_name from 数据库名.INFORMATION_SCHEMA.TABLES Where TABLE_TYPE='BASE TABLE'

--查询表字段

use northwind --数据库名 go Select dbo.sysobjects.name as Table_name,  dbo.syscolumns.name AS Column_name FROM dbo.syscolumns INNER JOIN dbo.sysobjects ON dbo.syscolumns.id = dbo.sysobjects.id  Where (dbo.sysobjects.xtype = 'u') AND (NOT (dbo.sysobjects.name LIKE 'dtproperties')) go --查询表字段，数据类型，数据长度 use northwind  --数据库名 go select t.name as tablename,c.name as columnname,ty.name as typename,c.max_length as typelength  from sys.columns c inner join sys.tables t on t.object_id=c.object_id inner join sys.types ty on ty.system_type_id=c.system_type_id order by t.name,c.column_id for xml auto go