获取表信息
1.获取表结构信息
列名,列类型,最大值,是否主键,是否自增,是否允许为空,说明
2.指定表获取此表的所有外键
列名,外键列表,外键表名
希望效率高些的Sql
[解决办法]
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
[解决办法]
学习
[解决办法]
楼上的子陌出手就不是一样.特大手笔.
[解决办法]
有些地方还不是很懂.
[解决办法]
收藏，慢慢看，学习，谢谢~~~~~~
[解决办法]
就是把每个系统表得数据提出来变成汉字 ,真到位 ^_^
[解决办法]
真的学习了!
[解决办法]
1．加上公式内容
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], ' '),
公式内容 = isnull(h.text, ' ')
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
left join
syscomments h
on
a.id=h.id and a.colorder=h.number
where
d.name= 't ' --如果只查询指定表,加上此条件
order by
a.id,a.colorder
[解决办法]
--贴一个：
select a.constid,c.name as rtname,e.name as rcname,a.keyno, b.name as ftname,d.name as fcname
from sysforeignkeys a inner join sysobjects b on a.fkeyid = b.id
inner join sysobjects c on a.rkeyid = c.id
inner join syscolumns d on b.id = d.id and a.fkey = d.colid
inner join syscolumns e on c.id = e.id and a.rkey = e.colid
where c.name = '表名 '
[解决办法]
sp_fkeys
返回当前环境的逻键外键信息。该过程显示各种外键关系，包括禁用的外键。
下面的示例为 Northwind 数据库中的 Customers 表检索一个外键的列表。
USE Northwind
EXEC sp_fkeys @pktable_name = N 'Customers '
[解决办法]
强啊
