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Count Distinct


Count Distinct

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FargoUT
FargoUT
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I got it right by eliminating the answers which were wrong. Incidentally, maybe this is something specific with SSRS (which I have no experience with), but my initial instinct was to say that none of the answers was correct as the query would return with the following:

"Must declare the scalar variable '@startDate'"

Probably being too nitpicky about that though... :-D
UMG Developer
UMG Developer
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Thanks for the question.
Tom Thomson
Tom Thomson
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Nice straighforward question. I like them like this.

Tom

SQLRNNR
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Good question.

Jason...AKA CirqueDeSQLeil
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Stewart "Arturius" Campbell
Stewart "Arturius" Campbell
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FargoUT (1/24/2011)
I got it right by eliminating the answers which were wrong. Incidentally, maybe this is something specific with SSRS (which I have no experience with), but my initial instinct was to say that none of the answers was correct as the query would return with the following:

"Must declare the scalar variable '@startDate'"

Probably being too nitpicky about that though... :-D


Within SSRS, when a query is written with variables like this, when the report is compiled, parameters are build, which must be populated (via user input) before the report is run.

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twalpole
twalpole
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If requesting parts ordered more than once, need to query for diff > 0
john.arnott
john.arnott
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twalpole (1/31/2011)
If requesting parts ordered more than once, need to query for diff > 0

Nice catch. The difference is between a count(DISTINCT) and and a straight count. With all unique parts, the count(distinct) would equal the count() and the difference would be zero. With a repeat order for a part, the count(DISTINCT) would be less than the straight-up count().
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