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SQL2000列判断？解决方案

发布时间： 2012-12-16 12:02:32 作者： rapoo

SQL2000列判断？
在SQL2000，如何盘点一个表中的列是唯一列，主键列，自增长列。
在SQL2000中的帮助文件没看明白。
[最优解释]
null
[其他解释]
2000有啥系统表我都忘了，要是05甚至08，就简单多了，有函数可以查找的
[其他解释]
嗯， 看了下帮助 05 08的系统表就标识的很清楚，2000的就没找到在什么地方

[其他解释]

SELECT   
字段序号=a.colorder, 
字段名=a.name, 
字段类型=case   when   COLUMNPROPERTY(   a.id,a.name, 'IsIdentity ')=1   then   '标识字段 'else   ' '   end 
+case   when   exists(SELECT   1   FROM   sysobjects   where   xtype= 'PK '   and   name   in   ( 
SELECT   name   FROM   sysindexes   WHERE   indid   in( 
SELECT   indid   FROM   sysindexkeys   WHERE   id   =   a.id   AND   colid=a.colid 
)))   then   '   主键字段 '   else   ' '   end 
FROM   syscolumns   a 
where   id=object_id(N 'jobs ')--要查询的表名 
and(--标识字段 
COLUMNPROPERTY(   a.id,a.name, 'IsIdentity ')=1 
or   --主键字段 
exists(SELECT   1   FROM   sysobjects   where   xtype= 'PK '   and   name   in   ( 
SELECT   name   FROM   sysindexes   WHERE   indid   in( 
SELECT   indid   FROM   sysindexkeys   WHERE   id   =   a.id   AND   colid=a.colid 
)))) 
order   by   a.id,a.colorder

[其他解释]
SELECT 
    表名=case   when   a.colorder=1   then   d.name   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   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.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   a.id,a.colorder

[其他解释]
--sql server 2000
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



--sql server 2005
-- 1. 表结构信息查询
-- ========================================================================
-- 表结构信息查询
-- 邹建 2005.08(引用请保留此信息)
-- ========================================================================
SELECT
TableName=CASE WHEN C.column_id=1 THEN O.name ELSE N'' END,
TableDesc=ISNULL(CASE WHEN C.column_id=1 THEN PTB.[value] END,N''),
Column_id=C.column_id,
ColumnName=C.name,
PrimaryKey=ISNULL(IDX.PrimaryKey,N''),
[IDENTITY]=CASE WHEN C.is_identity=1 THEN N'√'ELSE N'' END,
Computed=CASE WHEN C.is_computed=1 THEN N'√'ELSE N'' END,
Type=T.name,
Length=C.max_length,
Precision=C.precision,
Scale=C.scale,
NullAble=CASE WHEN C.is_nullable=1 THEN N'√'ELSE N'' END,
[Default]=ISNULL(D.definition,N''),
ColumnDesc=ISNULL(PFD.[value],N''),
IndexName=ISNULL(IDX.IndexName,N''),
IndexSort=ISNULL(IDX.Sort,N''),
Create_Date=O.Create_Date,
Modify_Date=O.Modify_date
FROM sys.columns C
INNER JOIN sys.objects O
ON C.[object_id]=O.[object_id]
AND O.type='U'
AND O.is_ms_shipped=0
INNER JOIN sys.types T
ON C.user_type_id=T.user_type_id
LEFT JOIN sys.default_constraints D
ON C.[object_id]=D.parent_object_id
AND C.column_id=D.parent_column_id
AND C.default_object_id=D.[object_id]
LEFT JOIN sys.extended_properties PFD
ON PFD.class=1
AND C.[object_id]=PFD.major_id
AND C.column_id=PFD.minor_id
-- AND PFD.name='Caption' -- 字段说明对应的描述名称(一个字段可以添加多个不同name的描述)


LEFT JOIN sys.extended_properties PTB
ON PTB.class=1
AND PTB.minor_id=0
AND C.[object_id]=PTB.major_id
-- AND PFD.name='Caption' -- 表说明对应的描述名称(一个表可以添加多个不同name的描述)
LEFT JOIN -- 索引及主键信息
(
SELECT
IDXC.[object_id],
IDXC.column_id,
Sort=CASE INDEXKEY_PROPERTY(IDXC.[object_id],IDXC.index_id,IDXC.index_column_id,'IsDescending')
WHEN 1 THEN 'DESC' WHEN 0 THEN 'ASC' ELSE '' END,
PrimaryKey=CASE WHEN IDX.is_primary_key=1 THEN N'√'ELSE N'' END,
IndexName=IDX.Name
FROM sys.indexes IDX
INNER JOIN sys.index_columns IDXC
ON IDX.[object_id]=IDXC.[object_id]
AND IDX.index_id=IDXC.index_id
LEFT JOIN sys.key_constraints KC
ON IDX.[object_id]=KC.[parent_object_id]
AND IDX.index_id=KC.unique_index_id
INNER JOIN -- 对于一个列包含多个索引的情况,只显示第1个索引信息
(
SELECT [object_id], Column_id, index_id=MIN(index_id)
FROM sys.index_columns
GROUP BY [object_id], Column_id
) IDXCUQ
ON IDXC.[object_id]=IDXCUQ.[object_id]
AND IDXC.Column_id=IDXCUQ.Column_id
AND IDXC.index_id=IDXCUQ.index_id
) IDX
ON C.[object_id]=IDX.[object_id]
AND C.column_id=IDX.column_id
-- WHERE O.name=N'要查询的表' -- 如果只查询指定表,加上此条件
ORDER BY O.name,C.column_id

-- 2. 索引及主键信息
-- ========================================================================
-- 索引及主键信息
-- 邹建 2005.08(引用请保留此信息)


-- ========================================================================
SELECT
TableId=O.[object_id],
TableName=O.Name,
IndexId=ISNULL(KC.[object_id],IDX.index_id),
IndexName=IDX.Name,
IndexType=ISNULL(KC.type_desc,'Index'),
Index_Column_id=IDXC.index_column_id,
ColumnID=C.Column_id,
ColumnName=C.Name,
Sort=CASE INDEXKEY_PROPERTY(IDXC.[object_id],IDXC.index_id,IDXC.index_column_id,'IsDescending')
WHEN 1 THEN 'DESC' WHEN 0 THEN 'ASC' ELSE '' END,
PrimaryKey=CASE WHEN IDX.is_primary_key=1 THEN N'√'ELSE N'' END,
[UQIQUE]=CASE WHEN IDX.is_unique=1 THEN N'√'ELSE N'' END,
Ignore_dup_key=CASE WHEN IDX.ignore_dup_key=1 THEN N'√'ELSE N'' END,
Disabled=CASE WHEN IDX.is_disabled=1 THEN N'√'ELSE N'' END,
Fill_factor=IDX.fill_factor,
Padded=CASE WHEN IDX.is_padded=1 THEN N'√'ELSE N'' END
FROM sys.indexes IDX
INNER JOIN sys.index_columns IDXC
ON IDX.[object_id]=IDXC.[object_id]
AND IDX.index_id=IDXC.index_id
LEFT JOIN sys.key_constraints KC
ON IDX.[object_id]=KC.[parent_object_id]
AND IDX.index_id=KC.unique_index_id
INNER JOIN sys.objects O
ON O.[object_id]=IDX.[object_id]
INNER JOIN sys.columns C
ON O.[object_id]=C.[object_id]
AND O.type='U'
AND O.is_ms_shipped=0
AND IDXC.Column_id=C.Column_id
-- INNER JOIN -- 对于一个列包含多个索引的情况,只显示第1个索引信息
-- (
-- SELECT [object_id], Column_id, index_id=MIN(index_id)
-- FROM sys.index_columns
-- GROUP BY [object_id], Column_id
-- ) IDXCUQ
-- ON IDXC.[object_id]=IDXCUQ.[object_id]
-- AND IDXC.Column_id=IDXCUQ.Column_id


[其他解释]

引用:
SQL code
SELECT
表名=case when a.colorder=1 then d.name else ' ' end,
字段序号=a.colorder,
字段名=a.name,
标识=case when COLUMNPROPERTY( a.id,a.name, 'IsIdentity ')=1 ……


这个我测试了下，盘断不了唯一索引和自动增长列。
[其他解释]
引用:
--sql server 2000
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……



第二个 不能用到SQL 2000 上？

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