1、查找表的所有索引（包括索引名，类型，构成列）：
select t.*,i.index_type from user_ind_columns t,user_indexes i where t.index_name = i.index_name and t.table_name = i.table_name and t.table_name = 要查询的表
select cu.* from user_cons_columns cu,user_constraints au where cu.constraint_name = au.constraint_name and au.constraint_type = 'P' and au.table_name = 要查询的表
select column_name from user_cons_columns cu,user_constraints au where cu.constraint_name = au.constraint_name and au.constraint_type = 'U' and au.table_name = 要查询的表
4、查找表的外键（包括名称，引用表的表名和对应的键名，下面是分成多步查询）：
select * from user_constraints c where c.constraint_type = 'R' and c.table_name = 要查询的表
查询外键约束的列名：
select * from user_cons_columns cl where cl.constraint_name = 外键名称
查询引用表的键的列名：
select * from user_cons_columns cl where cl.constraint_name = 外键引用表的键名
select t.*,c.COMMENTS from user_tab_columns t,user_col_comments c where t.table_name = c.table_name and t.column_name = c.column_name and t.table_name = 要查询的表
select '' as rownum,TableName_sqlServer,ColumnName,FieldType_sqlServer,
FieldType_sqlServer +
case
when FieldLength is null or charindex('datetime',FieldType_sqlServer) != 0 or charindex('int',FieldType_sqlServer) != 0
then ''
else '(' + FieldLength + ')'
end as FieldTypeLen_sqlServer
,DefaultValue_sqlServer,FieldType_Oracle,DefaultValue_Oracle,
case when IsNullable = '1'
then 'Y'
else ''
end as IsNullable,
case when charindex('datetime',FieldType_sqlServer) != 0
then ''
else FieldLength
end as FieldLength,isnull(IsKey,'') as IsKey,PkName,isnull(IsIndex,'') as isIndex,IndexName
from
(
select ta.name as TableName_sqlServer,c.name as ColumnName,c.
IsNullable,t.name as FieldType_sqlServer,cast(c.prec as varchar) +
case when c.scale is null
then ''
else ','
end + isnull(cast(c.scale as varchar),'') as FieldLength,isnull(co.text,'') as DefaultValue_sqlServer,
'' as FieldType_Oracle,'' as DefaultValue_Oracle,
(
select top 1
case when i1.status = 2066 then 'Y' else '' end from sysindexes i1,sysindexkeys k1
where i1.id = k1.id
and i1.indid = k1.indid
and i1.id = c.id
and k1.colid = c.colid
AND i1.status = 2066
) as IsKey,
(
select top 1
case when i2.status = 2066
then i2.name
else ''
end
from sysindexes i2,sysindexkeys k2
where i2.id = k2.id
and i2.indid = k2.indid
and i2.id = c.id
and k2.colid = c.colid
AND i2.status = 2066
) as PkName,
(
select top 1
case when i3.status != 2066
then 'Y'
else ''
end
from sysindexes i3,sysindexkeys k3
where i3.id = k3.id
and i3.indid = k3.indid
and i3.id = c.id
and k3.colid = c.colid
AND i3.status != 2066
) as IsIndex,
(
select top 1
case when i4.status != 2066
then i4.name
else ''
end
from sysindexes i4,sysindexkeys k4
where i4.id = k4.id
and i4.indid = k4.indid
and i4.id = c.id
and k4.colid = c.colid
AND i4.status != 2066
) as IndexName
from sysobjects ta
inner join syscolumns c on ta.id = c.id
left join SYSTYPES t on c.xusertype = t.xusertype
left join syscomments co on c.cdefault = co.id
where ta.xtype = 'U'
) b
order by TableName_sqlServer,ColumnName
执行结果如下：
ldy-友情链接：
本文来源：(http://blog.sina.com.cn/s/blog_5421dfd20100fhvd.html) - sqlServer2005数据库所有表和字段及其属性_mousekitty_新浪博客
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