sql server (alternate): stupid SQL question on Where clause -- sql server (alternate)

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stupid SQL question on Where clause

smart_aleck72 NO[at]SPAM yahoo.com
6/30/2005 12:53:04 PM

sql server (alternate): Is there any difference in the order of parameters in the where clause?
Does it add any speed to declare the least refined first or last?

Re: stupid SQL question on Where clause

Erland Sommarskog
6/30/2005 9:29:42 PM

(smart_aleck72@yahoo.com) writes:
[quoted text, click to view]

No.

--
Erland Sommarskog, SQL Server MVP, esquel@sommarskog.se

Books Online for SQL Server SP3 at

Re: stupid SQL question on Where clause

Mr.LonelyStranger NO[at]SPAM gmail.com
7/10/2005 10:51:44 AM

[quoted text, click to view]

yes, it does...
I have seen it performing well when u make the condition
that filter the most records first.

Re: stupid SQL question on Where clause

--CELKO--
7/10/2005 11:42:07 AM

No, the optimizer gets to re-order the predicates as it sees fit. The
*kind* of predicates and the statistics is important, however.

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