IOMHouston

PI sdk cannot get minimum value for a non-numeric field...

Discussion created by IOMHouston on May 20, 2011
Latest reply on Jun 10, 2011 by spilon

When executing min/max (summary calculation) on a string tag, an error 

 

Cannot do summary calculation on non-numeric data is generated.

 

 

 

I understand the PI OldDB is based on the SDK. Why is it that I can get the maximum

 

of a string using oIeDB, but I get an error when executing this query using the sdk.

 

 

 

Does the oleDB control reads all the values and internally calculate the maximum (or minimum, total etc)

 

 

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