[GitHub] [datasketches-postgresql] AlexanderSaydakov commented on issue #48: Question: how to add an item to a theta sketch

[GitBox <gi...@apache.org>]

AlexanderSaydakov commented on issue #48:
URL: https://github.com/apache/datasketches-postgresql/issues/48#issuecomment-1109013590

   Yes, the theta_sketch_add_item function is an internal function. It is a state transition function that is needed to define an aggregate function.
   Usually sketches are built from raw data for particular periods of time and particular combinations of dimensions. Those datasets become the base table (hypercube). Then the base table is queried for a particular reporting period with a subset of dimensions. That would be the union of sketches.


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