Jeff Moden (12/1/2008)
Good article... but, because of the title, I was actually expecting to see something about a problem or technique with CTE's that couldn't be done using other forms of code. The article is really about how an index can help any query be it a CTE, Derived Table, View, etc.
Jeff,
I was also thrown by the title although 'deception' gave me a clue.
On the other hand, thanks to Kev for pointing out what should have been obvious...the use of indexes on columns commonly used in WHERE and ORDER BY clauses. I must admit that it gave me ideas on some inherited problem code that is built with CTE for no reason I can discern. The CTE is (to me) no gain over standard SQL but potentially a gauze curtain covering up an underlying indexing issue. And I would venture that it was authored by a procedural programmer...
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