Dynamically Create Warehouse Dimensions
Here's a data warehouse design pattern to speed up multi-value dimension creation.
2017-11-13
1,287 reads
Permutation
Generating n-Tuples with SQL
An n-Tuple is a combination of values from rows of a table in pairs (2-Tuple) or triplets (3-Tuple), etc.
2012-05-17
10,514 reads
RE: PLEASE HELP NEEDED? - with a select avg
Here's a shot in the dark:USE NORTHWIND SELECT CustomerID , COUNT(*) No_of_Orders , DATEDIFF(d,MIN(OrderDate), MAX(OrderDate)) TimeSpan , COUNT(*)*1.0 / DATEDIFF(d,MIN(OrderDate), MAX(OrderDate)) DailyOrder FROM Orders WHERE CustomerID = 'ERNSH' AND (OrderDate >='19960717' AND OrderDate <='19960723') GROUP BY CustomerIDBtw, since this is an exercise given to you, don't you think you should find the solution yourself?
2005-02-24
RE: Local Variables in a Stored Procedure
I remember having this problem too - particularly when using dates. My guess at that time was that "knowing" the date value allowed the query optimizer to do something that it couldn't do when the value was unknown - maybe looking thru the index up front?. I'd love to know more about this. regards k2
2003-12-05
1 reads
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Azure Data Lake Storage Gen 2
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