Re: Support for "advanced" SQL types (in HLL)

2020-07-03 Thread leerho
Csaba, These are some very thoughtful suggestions and I can see that some recommendations in this area would be useful. Our focus in our DataSketches team is really on the sketching algorithms and designing the core sketches to be very high performing, robust, accurate, and easy to integrate (e.g.

Support for "advanced" SQL types (in HLL)

2020-07-01 Thread Csaba Ringhofer
Hi! This came up while trying to ensure HLL sketch interoperability between Apache Hive and Apache Impala. Currently in Hive the following types are not supported by ds_hll_sketch(): - BOOLEAN - SMALLINT - DECIMAL - TIMESTAMP - DATE These types vary in complexity and usefulness, e.g. B