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110
Contributor III
Contributor III

Load from QVD where values match range of values

I've tried searching the forums in vain  - am looking to do similar to a SQL where +  in clause , in which a query returns records with a value matching any of the values in the passed array, for example 

 

Select   * from PrimeNumbers where MyNumber in (1,2,3,5,7,13,17 ) 

I have a resident table, and a variable where I've stored a comma separated range of values in order to parameterise the query.   Is this possible? 

The 'in' keyword is not recongised.


[MyFilteredQVDTable]:

Load * from MyQVDTable  where MyNumberKey  in ( $( MyNumberKeyRange)  ) 


 

Labels (2)
4 Replies
marcus_sommer

You could apply it in this way:

Load * from MyQVDTable  where match(MyNumberKey, $(MyNumberKeyRange))

Or
MVP
MVP

Just to add to @marcus_sommer  solution, which is correct, if you're reading from a QVD you may go a slightly different direction. First, load the values you want to filter on into a table, e.g.

Load * INLINE [

MyNumberKey

1

2

3

5];

Then,

Load * from MyQVDTable where Exists(MyNumberKey);

This will result in an optimized QVD load.

110
Contributor III
Contributor III
Author

Thanks both @marcus_sommer  and @Or  -  that's really helpful.

As it cuts out an additional step, I'll probably use  the Exists () as I'm creating a concatenated variable from a table anyway.  

Or
MVP
MVP

In that case, just make sure that the field name matches so you can get an optimized load (unless it's a small QVD, in which case optimization doesn't really matter).