Hi,guys!
I have a table below:
CREATE TABLE rsccategory
(
categoryid NUMERIC(2) IDENTITY(1,1),
categoryname VARCHAR(20) NOT NULL,
PRIMARY KEY(categoryid)
)
Then I do:
INSERT rsccategory(cat egoryname) VALUES('url')
INSERT rsccategory(cat egoryname) VALUES('documen t')
INSERT rsccategory(cat egoryname) VALUES('book')
INSERT rsccategory(cat egoryname) VALUES('softwar e')
INSERT rsccategory(cat egoryname) VALUES('casus')
INSERT rsccategory(cat egoryname) VALUES('project ')
INSERT rsccategory(cat egoryname) VALUES('disert' )
Then SELECT * FROM rsccategory in ,I can get a recordeset with the
'categoryid' in order(1,2,3,4,5 ,6,7)
But If I change the table definition this way:
categoryname VARCHAR(20) NOT NULL UNIQUE,
The select result is in this order (3,5,7,2,6,4,1) ,and 'categoryname '
in alphabetic.
Q:why the recordset's order is not the same as the first time since
'categoryid' is clustered indexed.
If I change the table definition again:
categoryname VARCHAR(20) NOT NULL UNIQUE CLUSTERED
the result is the same as the first time.
Q:'categoryname ' is clustered indexed this time,why isn't in alphabetic
order?
I am a newbie in ms-sqlserver,or actually in database,and I do have
sought for the answer for some time,but more confused,Thanks for your
kind help in advance!
2  2742 
I assume the last post was a mistake or a late delivery from a news server, as you've got several
replies to your question. If you have question on any of the replies, please ask along with the
reply (and not just post the question again).
--
Tibor Karaszi, SQL Server MVP
Archive at: http://groups.google.com/groups?oi=djq&as ugroup=microsof t.public.sqlser ver
"Rhett Liu" <li**********@m ail.biti.edu.cn > wrote in message news:bi******** **@mail.cn99.co m... Hi,guys!
I have a table below:
CREATE TABLE rsccategory
(
categoryid NUMERIC(2) IDENTITY(1,1),
categoryname VARCHAR(20) NOT NULL,
PRIMARY KEY(categoryid)
)
Then I do:
INSERT rsccategory(cat egoryname) VALUES('url')
INSERT rsccategory(cat egoryname) VALUES('documen t')
INSERT rsccategory(cat egoryname) VALUES('book')
INSERT rsccategory(cat egoryname) VALUES('softwar e')
INSERT rsccategory(cat egoryname) VALUES('casus')
INSERT rsccategory(cat egoryname) VALUES('project ')
INSERT rsccategory(cat egoryname) VALUES('disert' )
Then SELECT * FROM rsccategory in ,I can get a recordeset with the
'categoryid' in order(1,2,3,4,5 ,6,7)
But If I change the table definition this way:
categoryname VARCHAR(20) NOT NULL UNIQUE,
The select result is in this order (3,5,7,2,6,4,1) ,and 'categoryname '
in alphabetic.
Q:why the recordset's order is not the same as the first time since
'categoryid' is clustered indexed.
If I change the table definition again:
categoryname VARCHAR(20) NOT NULL UNIQUE CLUSTERED
the result is the same as the first time.
Q:'categoryname ' is clustered indexed this time,why isn't in alphabetic
order?
I am a newbie in ms-sqlserver,or actually in database,and I do have
sought for the answer for some time,but more confused,Thanks for your
kind help in advance!
Tibor Karaszi дµÀ: I assume the last post was a mistake or a late delivery from a news server, as you've got several
replies to your question. If you have question on any of the replies, please ask along with the
reply (and not just post the question again).
late delivery,
you are right,
And you are so kind!Wishes! This thread has been closed and replies have been disabled. Please start a new discussion. Similar topics | |
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