读取sql2000,sql2005中的表结构的相信信息

这是2005的

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'abc' -- 如果只查询指定表,加上此条件

这是2000的

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=@ConfigurationTablName 

order by a.id,a.colorder

 

虽然有系统的存储过程sp_help,但是总的来说还是不如上面的sql语句来的有意义,毕竟要这条语句的人往往是为了写代码生成器用的.所以那些注释就显得有意义了.