1 --查询数据库中的所有数据库名：
2 SELECT * FROM Master..SysDatabases ORDER BY Name
3 --查询某个数据库中所有的表名：
4 select * from sysobjects where type='U'
5 --查询表结构
6 SELECT (case when a.colorder=1 then d.name else null end) 表名,
7 a.colorder 字段序号,a.name 字段名,
8 (case when COLUMNPROPERTY( a.id,a.name,'IsIdentity')=1 then '√'else '' end) 标识,
9 (case when (SELECT count(*) FROM sysobjects
10 WHERE (name in (SELECT name FROM sysindexes
11 WHERE (id = a.id) AND (indid in
12 (SELECT indid FROM sysindexkeys
13 WHERE (id = a.id) AND (colid in
14 (SELECT colid FROM syscolumns WHERE (id = a.id) AND (name = a.name)))))))
15 AND (xtype = 'PK'))>0 then '√' else '' end) 主键,b.name 类型,a.length 占用字节数,
16 COLUMNPROPERTY(a.id,a.name,'PRECISION') as 长度,
17 isnull(COLUMNPROPERTY(a.id,a.name,'Scale'),0) as 小数位数,(case when a.isnullable=1 then '√'else '' end) 允许空,
18 isnull(e.text,'') 默认值,isnull(g.[value], ' ') AS [说明]
19 FROM syscolumns a
20 left join systypes b on a.xtype=b.xusertype
21 inner join sysobjects d on a.id=d.id and d.xtype='U' and d.name<>'dtproperties'
22 left join syscomments e on a.cdefault=e.id
23 left join sys.extended_properties g on a.id=g.major_id AND a.colid=g.minor_id
24 left join sys.extended_properties f on d.id=f.class and f.minor_id=0
25 where
26 -- b.name is not null
27 d.name='File_Folder_Name' --如果只查询指定表,加上此条件
28 order by a.id,a.colorder
