sql server 查询表结构,表字段

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,
字段说明 = isnull(G.[value],”),
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,”)
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
sys.extended_properties G
on
A.id=G.major_id and A.colid=G.minor_id
Left Join

sys.extended_properties F
On
D.id=F.major_id and F.minor_id=0
where d.name=’tableName’ –如果只查询指定表,加上此条件
Order By
A.id,A.colorder

 

–获取一个数据库中的所有表的名称、一个表中所有字段的名称

SELECT (case when a.colorder=1 then d.name else null end) 表名,
a.colorder 字段序号,a.name 字段名,
(case when COLUMNPROPERTY( a.id,a.name,’IsIdentity’)=1 then ‘√’else ” end) 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) 主键,b.name 类型,a.length 占用字节数,
COLUMNPROPERTY(a.id,a.name,’PRECISION’) as 长度,
isnull(COLUMNPROPERTY(a.id,a.name,’Scale’),0) as 小数位数,(case when a.isnullable=1 then ‘√’else ” end) 允许空,
isnull(e.text,”) 默认值,isnull(g.[value], ‘ ‘) AS [说明]
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 sys.extended_properties g on a.id=g.major_id AND a.colid=g.minor_id
left join sys.extended_properties f on d.id=f.class and f.minor_id=0
where b.name is not null
–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

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