	[x] Posted via EE Mobile
	Search, ask, and monitor your questions on the go with EE Mobile. Visit Experts Exchange from your mobile device and never be out of touch again.

10/30/2009 at 04:39AM PDT, ID: 24857694

	[x] Attachment Details

[x]

The Solution Rating System

With so many solutions, how can you tell which solutions are most likely to help you and which ones are not? To provide you with a tool to use, we rate our solutions based on various elements that most accurately determine if a solution is a quality solution. To explain what factors affect the solution rating, here are the elements we take into consideration when formulating our solution rating.

The Grade of the Solution
The Zone Rank of the Expert Providing the Solution
The Number of Author and Expert Comments
The Number of Experts Contributing
The Feedback of the Community

Your Input Matters
Because of the way the system is set up, the most important variable in this equation is you. As a member of Experts Exchange, you are able to cast your vote on the quality of the solutions in regard to how complete, accurate, helpful and easy to understand each solution is. When you provide your feedback, each rating is adjusted accordingly. So, if you see a solution that has a poor rating that you think is a good solution, let us know by rating it. As you do, the rating will be adjusted and will become more accurate for other members of our site.

If you have any suggestions that you would like to make for our rating system, please ask a question in the Suggestions Zone of Community Support.

Thank you!

9.4

SQL Server - Clustered and NonClustered index on the same column?!?

Asked by Endelm in SQL Query Syntax, SQL Server 2005, SQL Server 2008

Hi,

I saw a table in my database that has custered and nonclustered index on the same column!

Does this make sense? Isn't it a waste of time to have the nonclustered index there, since its on the exacly same column as the primary index?

There is no gain in having the nonclustered index, right? Should be deleted?

Thank you! :)

View the Solution FREE for 30 Days

         
             ALTER TABLE dbo.MyTable ADD  CONSTRAINT PRIMARY KEY CLUSTERED 
(
	[id] ASC
)WITH (PAD_INDEX  = OFF, STATISTICS_NORECOMPUTE  = OFF, SORT_IN_TEMPDB = OFF, IGNORE_DUP_KEY = OFF, ONLINE = OFF, ALLOW_ROW_LOCKS  = ON, ALLOW_PAGE_LOCKS  = ON, FILLFACTOR = 70) ON [PRIMARY]
 
ALTER TABLE dbo.MyTable ADD  CONSTRAINT UNIQUE NONCLUSTERED 
(
	[Id] ASC
)WITH (PAD_INDEX  = OFF, STATISTICS_NORECOMPUTE  = OFF, SORT_IN_TEMPDB = OFF, IGNORE_DUP_KEY = OFF, ONLINE = OFF, ALLOW_ROW_LOCKS  = ON, ALLOW_PAGE_LOCKS  = ON, FILLFACTOR = 70) ON [PRIMARY]

20091111-EE-VQP-91 - Hierarchy / EE_QW_3_20080625

1. angelIII987,351
2. aneeshatti...751,342
3. matthews...575,487
4. rrjegan17410,769
5. capricorn1406,214
6. mwvisa1393,008
7. ralmada336,541
8. Sharath_...326,005
9. BrandonG...272,108
10. reb73229,974
11. chapmandew221,436
12. peter57r201,096
13. mark_wills177,032
14. boag2000158,848
15. pcelba155,279
16. sdstuber140,116
17. TextReport134,666
18. acperkins132,452
19. DanielWilson126,383
20. DatabaseMX122,464
21. pivar119,972
22. mrjoltcola116,984
23. LSMCons...114,570
24. RiteshShah114,551
25. lwadwell114,353

1. angelIII3,014,791
2. capricorn11,252,886
3. matthews...1,240,223
4. aneeshatti...1,162,945
5. mwvisa1828,426
6. chapmandew710,108
7. mark_wills694,816
8. BrandonG...557,946
9. peter57r494,820
10. ee_rlee460,453
11. rrjegan17410,769
12. sdstuber398,017
13. DatabaseMX392,015
14. Sharath_...365,805
15. dqmq346,705
16. ralmada338,541
17. GRayL330,160
18. DanielWilson324,456
19. boag2000320,161
20. harfang298,054
21. LSMCons...279,439
22. jimhorn238,445
23. reb73229,974
24. acperkins227,845
25. imitchie220,374

SQL Server - Clustered and NonClustered index on the same column?!?

Asked by Endelm in SQL Query Syntax, SQL Server 2005, SQL Server 2008

About this solution