快速查看表对的就说明，及表字段描述及字段类型
1 --表描述
2 SELECTtbs.name 表名,ds.value 描述3 FROMsys.extended_properties ds4 LEFT JOIN sysobjects tbs ON ds.major_id=tbs.id5 WHERE ds.minor_id=0 and
6 tbs.name='Warrant_BaseInfo';--表名
7
8 --快速查看表结构
9 SELECT CASE WHEN col.colorder = 1 THENobj.name10 ELSE ''
11 END AS表名,12 col.colorder AS序号 ,13 col.name AS列名 ,14 ISNULL(ep.[value], '') AS列说明 ,15 t.name AS数据类型 ,16 col.length AS长度 ,17 ISNULL(COLUMNPROPERTY(col.id, col.name, 'Scale'), 0) AS小数位数 ,18 CASE WHEN COLUMNPROPERTY(col.id, col.name, 'IsIdentity') = 1 THEN '√'
19 ELSE ''
20 END AS标识 ,21 CASE WHEN EXISTS ( SELECT 1
22 FROMdbo.sysindexes si23 INNER JOIN dbo.sysindexkeys sik ON si.id =sik.id24 AND si.indid =sik.indid25 INNER JOIN dbo.syscolumns sc ON sc.id =sik.id26 AND sc.colid =sik.colid27 INNER JOIN dbo.sysobjects so ON so.name =si.name28 AND so.xtype = 'PK'
29 WHERE sc.id =col.id30 AND sc.colid = col.colid ) THEN '√'
31 ELSE ''
32 END AS主键 ,33 CASE WHEN col.isnullable = 1 THEN '√'
34 ELSE ''
35 END AS允许空 ,36 ISNULL(comm.text, '') AS默认值37 FROMdbo.syscolumns col38 LEFT JOIN dbo.systypes t ON col.xtype =t.xusertype39 inner JOIN dbo.sysobjects obj ON col.id =obj.id40 AND obj.xtype = 'U'
41 AND obj.status >= 0
42 LEFT JOIN dbo.syscomments comm ON col.cdefault =comm.id43 LEFT JOIN sys.extended_properties ep ON col.id =ep.major_id44 AND col.colid =ep.minor_id45 AND ep.name = 'MS_Description'
46 LEFT JOIN sys.extended_properties epTwo ON obj.id =epTwo.major_id47 AND epTwo.minor_id = 0
48 AND epTwo.name = 'MS_Description'
49 WHERE obj.name = 'Ath_LoanApply_tbl'--表名
50 ORDER BY col.colorder ;
(1)
SELECT
表名=case when a.colorder=1 then d.name else '' end,
表说明=case when a.colorder=1 then isnull(f.value,'') else '' end,
字段序号=a.colorder,
字段名=a.name,
标识=case when COLUMNPROPERTY( a.id,a.name,'IsIdentity')=1 then '√'else '' end,
主键=case when exists(SELECT 1 FROM sysobjects where xtype='PK' and parent_obj=a.id and name in (
SELECT name FROM sysindexes WHERE indid in(
SELECT indid FROM sysindexkeys WHERE id = a.id AND colid=a.colid
))) then '√' else '' end,
类型=b.name,
占用字节数=a.length,
长度=COLUMNPROPERTY(a.id,a.name,'PRECISION'),
小数位数=isnull(COLUMNPROPERTY(a.id,a.name,'Scale'),0),
允许空=case when a.isnullable=1 then '√'else '' end,
默认值=isnull(e.text,''),
字段说明=isnull(g.[value],'')
FROM syscolumns a
left join systypes b on a.xusertype=b.xusertype
inner join sysobjects d on a.id=d.id and d.xtype='U' and d.name<>'dtproperties'
left join syscomments e on a.cdefault=e.id
left join sysproperties g on a.id=g.id and a.colid=g.smallid
left join sysproperties f on d.id=f.id and f.smallid=0
--where d.name='要查询的表' --如果只查询指定表,加上此条件
order by a.id,a.colorder
(2)
SQL2000系统表的应用
--1：获取当前数据库中的所有用户表
select Name from sysobjects where xtype='u' and status>=0
--2：获取某一个表的所有字段
select name from syscolumns where id=object_id('表名')
--3：查看与某一个表相关的视图、存储过程、函数
select a.* from sysobjects a, syscomments b where a.id = b.id and b.text like '%表名%'
--4：查看当前数据库中所有存储过程
select name as 存储过程名称 from sysobjects where xtype='P'
--5：查询用户创建的所有数据库
select * from master..sysdatabases D where sid not in(select sid from master..syslogins where name='sa')
或者
select dbid, name AS DB_NAME from master..sysdatabases where sid <> 0x01
--6：查询某一个表的字段和数据类型
select column_name,data_type from information_schema.columns
where table_name = '表名'
--7:取得表字段的描述
select name,
(select value from sysproperties where id = syscolumns.id and smallid=syscolumns.colid) as 描述
from syscolumns where id=object_id('表名')
