I was wondering if the SQL standard deviation functions STDDEV_POP and STDDEV_SAMP are supported. I did give it a try and got an ArrayIndexOutOfBounds exception (v 1.5.0):
Caused by: java.lang.ArrayIndexOutOfBoundsException: 8
It appears looking at the GridSqlFunctionType class that there is no support for stddev functions at the moment. I was wondering if there are plans to add support or if there is a workaround.
View this message in context: SQL Query - Standard Devation
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These functions are not supported and there is a ticket for this . It looks like there is no estimates right now, I would recommend to write to the dev@ list and ask if someone is going to implement this.