declare@ttable(成績 int,學生 varchar(10
))insert
@tselect
100,'小張'
union
select
70 ,'小力'
union
select
80 ,'小剛'
union
select
78 ,'小王'
select
*,pid = (select
count(1) from
@twhere 成績 > a.成績)+
1from@ta
order
bypid
/*成績 學生 pid
----------- ---------- -----------
100 小張 1
80 小剛 2
78 小王 3
70 小力 4
（所影響的行數為 4 行）
*/
select*,dense_rank()over(order
by integraltotal desc) from ht_members
--1.sql server查詢表的主外來鍵
select
外來鍵表id
=b.fkeyid ,
外來鍵表名稱
=object_name
(b.fkeyid) ,
外來鍵列id
=b.fkey ,
外來鍵列名
= (select name from syscolumns where colid = b.fkey and id =
b.fkeyid) ,
主鍵表id
=b.rkeyid ,
主鍵表名
=object_name
(b.rkeyid) ,
主鍵列id
=b.rkey ,
主鍵列名
= (select name from syscolumns where colid = b.rkey and id =
b.rkeyid) ,
級聯更新
=objectproperty(a.id,'
cnstisupdatecascade
') ,
級聯刪除
=objectproperty(a.id,'
cnstisdeletecascade')
from
sysobjects a
join sysforeignkeys b on a.id =
b.constid
join sysobjects c on a.parent_obj =
c.id
where a.xtype ='f
'and c.xtype ='u
'--2.sql 語句查詢外來鍵 以及對應的外來鍵表名、列名和引用的主表名、列名
;with
cte as(
select
object_name(constraint_object_id) constraint_name , object_name
(parent_object_id) table_name , c.name column_name
from
sys.foreign_key_columns fk
inner
join
sys.columns c
on fk.parent_object_id = c.object_id
and fk.parent_column_id =
c.column_id
)select c.constraint_name , c.table_name , c.column_name , object_name
(fk.referenced_object_id) referenced_table_name , sc.name referenced_column_name
from
cte c
inner
join
sys.foreign_key_columns fk
on c.constraint_name =
object_name
(fk.constraint_object_id)
inner
join
sys.columns sc
on fk.referenced_object_id = sc.object_id
and fk.referenced_column_id = sc.column_id
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