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Registered: ‎12-21-2017

Convert an array of doubles to a string in Impala

 

 

I'd like to be able to store an array of doubles in a column, and return these on a row in a select of the table.

 

So for instance the arrauy could be returned as a string, each element of the array delimited.

 

My arrays consist of 250+ (to thousands) of elements, so transposing each element onto a row would be very expensive.