Clint Wylie 8011211a0c first/last aggregators and nulls (#9161) ... * null handling for numeric first/last aggregators, refactor to not extend nullable numeric agg since they are complex typed aggs * initially null or not based on config * review stuff, make string first/last consistent with null handling of numeric columns, more tests * docs * handle nil selectors, revert to primitive first/last types so groupby v1 works...		2020-01-20 11:51:54 -08:00
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src	first/last aggregators and nulls (#9161)	2020-01-20 11:51:54 -08:00
pom.xml	Add HashJoinSegment, a virtual segment for joins. (#9111)	2020-01-16 13:14:20 -08:00