数据库建立 是否可以通过编程实现? 下面通过sql server 查询分析器生成数据库,如何在程序中实现同样的功能? USE master GO CREATE DATABASE ss ON ( NAME = Sales_dat, FILENAME = 'd:\saledat.mdf', SIZE = 10, MAXSIZE = 50, FILEGROWTH = 5 ) LOG ON ( NAME = 'Sales_log', FILENAME = 'd:\salelog.ldf', SIZE = 5MB, MAXSIZE = 25MB, FILEGROWTH = 5MB ) GO
一个数据库中的用户表: select name,id from dbo.sysobjects where xtype='U'一个表有那些列 select * from syscolumns where id=表的ID --对应sysobjects中的表ID
获取数据库中用户表 select id,name from sysobjects where xtype='u'获取某个表中的字段名和类型 select A.name,B.name as Type from syscolumns A join systypes B on A.xtype=B.xusertype where id = object_id('表名')
获取数据库中用户表 select id,name from sysobjects where xtype='u'获取某个表中的字段名和类型 select A.name,B.name as Type from syscolumns A join systypes B on A.xtype=B.xusertype where id = object_id('表名')
我在sql server2000 中新建了一个数据库,使用了 select id,name from sysobjects where xtype='u' 发现 系统表 dtproperties 也被读了出来如果用master数据库,则读出的系统表更多,有没有什么办法只读取用户表?
select id,name from sysobjects where xtype='u' and status >0
---获取全部表名,字段名和所有相关信息 SELECT b.name '表名',a.colorder '序号',a.name '字段名',c.name '类型',a.length '长度',a.isnullable '空值', a.cdefault '默认值' FROM syscolumns a,sysobjects b,systypes c WHERE a.id=b.id and b.xtype='u' and a.xtype=c.xtype order by b.name,a.colorder------取表名SELECT distinct(b.name) '表名' FROM syscolumns a,sysobjects b,systypes c WHERE a.id=b.id and b.xtype='u' and a.xtype=c.xtype order by b.name
还有个更强的语句,是邹建写的SELECT (case when a.colorder=1 then d.name else '' end) N'表名', a.colorder N'字段序号', a.name N'字段名', (case when COLUMNPROPERTY( a.id,a.name,'IsIdentity')=1 then '√'else '' end) N'标识', (case when (SELECT count(*) FROM sysobjects WHERE (name in (SELECT name FROM sysindexes WHERE (id = a.id) AND (indid in (SELECT indid FROM sysindexkeys WHERE (id = a.id) AND (colid in (SELECT colid FROM syscolumns WHERE (id = a.id) AND (name = a.name))))))) AND (xtype = 'PK'))>0 then '√' else '' end) N'主键', b.name N'类型', a.length N'占用字节数', COLUMNPROPERTY(a.id,a.name,'PRECISION') as N'长度', isnull(COLUMNPROPERTY(a.id,a.name,'Scale'),0) as N'小数位数', (case when a.isnullable=1 then '√'else '' end) N'允许空', isnull(e.text,'') N'默认值', isnull(g.[value],'') AS N'字段说明' --into ##txFROM syscolumns a left join systypes b on a.xtype=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 order by object_name(a.id),a.colorder
select name from syscolumns where id = object_id('表名') 这样得到的字段名已经重新排序了. 我不想要自动排序的功能,应该怎样改代码?如: 表结构:attri tag text dy_1_1 dy_1_3我想得到的结果是: attri tag text dy_1_1 dy_1_3 但使用以上语句的结果是: attri dy_1_1 dy_1_3 tag text
下面通过sql server 查询分析器生成数据库,如何在程序中实现同样的功能?
USE master
GO
CREATE DATABASE ss
ON
( NAME = Sales_dat,
FILENAME = 'd:\saledat.mdf',
SIZE = 10,
MAXSIZE = 50,
FILEGROWTH = 5 )
LOG ON
( NAME = 'Sales_log',
FILENAME = 'd:\salelog.ldf',
SIZE = 5MB,
MAXSIZE = 25MB,
FILEGROWTH = 5MB )
GO
select name,id from dbo.sysobjects where xtype='U'一个表有那些列
select * from syscolumns where id=表的ID --对应sysobjects中的表ID
获取数据库中用户表
select id,name from sysobjects where xtype='u'获取某个表中的字段名和类型
select A.name,B.name as Type from syscolumns A
join systypes B on A.xtype=B.xusertype
where id = object_id('表名')
select id,name from sysobjects where xtype='u'获取某个表中的字段名和类型
select A.name,B.name as Type from syscolumns A
join systypes B on A.xtype=B.xusertype
where id = object_id('表名')
select id,name from sysobjects where xtype='u'
发现 系统表 dtproperties 也被读了出来如果用master数据库,则读出的系统表更多,有没有什么办法只读取用户表?
SELECT b.name '表名',a.colorder '序号',a.name '字段名',c.name '类型',a.length '长度',a.isnullable '空值',
a.cdefault '默认值' FROM syscolumns a,sysobjects b,systypes c WHERE a.id=b.id and b.xtype='u'
and a.xtype=c.xtype order by b.name,a.colorder------取表名SELECT distinct(b.name) '表名' FROM syscolumns a,sysobjects b,systypes c WHERE a.id=b.id and b.xtype='u'
and a.xtype=c.xtype order by b.name
(case when a.colorder=1 then d.name else '' end) N'表名',
a.colorder N'字段序号',
a.name N'字段名',
(case when COLUMNPROPERTY( a.id,a.name,'IsIdentity')=1 then '√'else '' end) N'标识',
(case when (SELECT count(*)
FROM sysobjects
WHERE (name in
(SELECT name
FROM sysindexes
WHERE (id = a.id) AND (indid in
(SELECT indid
FROM sysindexkeys
WHERE (id = a.id) AND (colid in
(SELECT colid
FROM syscolumns
WHERE (id = a.id) AND (name = a.name))))))) AND
(xtype = 'PK'))>0 then '√' else '' end) N'主键',
b.name N'类型',
a.length N'占用字节数',
COLUMNPROPERTY(a.id,a.name,'PRECISION') as N'长度',
isnull(COLUMNPROPERTY(a.id,a.name,'Scale'),0) as N'小数位数',
(case when a.isnullable=1 then '√'else '' end) N'允许空',
isnull(e.text,'') N'默认值',
isnull(g.[value],'') AS N'字段说明'
--into ##txFROM syscolumns a left join systypes b
on a.xtype=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
order by object_name(a.id),a.colorder
这样得到的字段名已经重新排序了.
我不想要自动排序的功能,应该怎样改代码?如:
表结构:attri tag text dy_1_1 dy_1_3我想得到的结果是:
attri
tag
text
dy_1_1
dy_1_3
但使用以上语句的结果是:
attri
dy_1_1
dy_1_3
tag
text
order by colorder asc