由於寫乙個**自動生成工具,需要找一些讀系統資料字典的資訊,
以前有個寫乙個很不錯的,
case
when
a.colorder=1
then
d.name
else
''end
, 字段序號
=a.colorder, 欄位名
=a.name, 標識
=case
when
columnproperty
( a.id,a.name,
'isidentity')
=1then'√
'else
''end
, 主鍵
=case
when
exists
(select
1from
sysobjects
where
xtype='
pk'andname
in(
select
name
from
sysindexes
where
indid
in(
select
indid
from
sysindexkeys
where
id =
a.id
andcolid
=a.colid )))
then'√
'else
''end
, 型別
=b.name, 占用位元組數
=a.length, 長度
=columnproperty
(a.id,a.name,
'precision
'), 小數字數
=isnull
(columnproperty
(a.id,a.name,
'scale'),
0), 允許空
=case
when
a.isnullable=1
then'√
'else
''end
, 預設值
=isnull
(e.text,''
), 字段說明
=isnull
(g.[
value],
'')from
syscolumns a
left
join
systypes b
ona.xtype
=b.xusertype
inner
join
sysobjects d
ona.id
=d.id
andd.xtype='
u'andd.name
<>
'dtproperties
'left
join
syscomments e
ona.cdefault
=e.id
left
join
sysproperties g
ona.id
=g.id
anda.colid
=g.smallid
order
bya.id,a.colorder
我也按字的方法來讀,
但是今天發現,主鍵,資訊不是很正確,
一看**,讀主鍵,那要跟索引結合起來的,
於是上網找相關資料,找了半天,也沒有找到,
於是就自己看sql server的幫助,
最後發現,
syscolumns的status為128就是主鍵,
columnname
=a.name, type
=b.name,length3
=columnproperty
(a.id,a.name,
'precision
'),
=case
a.status
when
128then'1
'else'0
'end
, length1
=a.length, length2
=isnull
(columnproperty
(a.id, a.name,
'scale
'),
0),isidentity
=case
when
columnproperty
(a.id, a.name,
'isidentity
') =1
then'1
'else'0
'end
from
syscolumns a
left
join
systypes b
ona.xtype
=b.xusertype
inner
join
sysobjects d
ona.id
=d .id
andd .xtype ='
u'andd .name
<>
'dtproperties
'left
join
syscomments e
ona.cdefault
=e.id
left
join
sysproperties g
ona.id
=g.id
anda.colid
=g.smallid
where
d .name ='
users
'order
bya.id, a.colorder
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