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Groups > comp.databases.ms-sqlserver > #774
| From | Hugo Kornelis <hugo@perFact.REMOVETHIS.info.INVALID> |
|---|---|
| Newsgroups | comp.databases.ms-sqlserver |
| Subject | Re: Non-Relating Join Criteria |
| Date | 2011-11-02 15:08 +0100 |
| Message-ID | <ekj2b71idt43lo3n8m0hhmtkgrvc00jgcp@4ax.com> (permalink) |
| References | <12431962.894.1320242027343.JavaMail.geo-discussion-forums@yqbl36> |
Hi Fred, >My question is whether or not there can be a strong >reason to prefer one over the other, such as impact >on the order of evaluation. No. Order of evaluation can and will be shuffled by the optimizer if that can improve performance. The only reason for using one and not the other is readability of the query. Note, though, that for OUTER JOINs, the two queries are NOT equivalent! -- Hugo Kornelis, SQL Server MVP My SQL Server blog: http://sqlblog.com/blogs/hugo_kornelis
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Non-Relating Join Criteria "Fred." <ghrno-google@yahoo.com> - 2011-11-02 06:53 -0700 Re: Non-Relating Join Criteria Hugo Kornelis <hugo@perFact.REMOVETHIS.info.INVALID> - 2011-11-02 15:08 +0100 Re: Non-Relating Join Criteria "Bob Barrows" <reb01501@NOyahooSPAM.com> - 2011-11-02 09:10 -0500
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