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e89ba550c9
As a proof-of-concept, this patch implements avg() with a STRING intermediate type, and changes variance() to output a DOUBLE. I tested this change on single-node and distributed plans, with the partitioned as well as the old aggregation node. This patch leaves several things for follow-on changes: - plumb through CHAR as an intermediate type - modify other builtin aggregtes to use appropriate output/intermediate types - allow analytic functions to have different output/intermediate types Change-Id: I8d3396201cb370f44660ab4f7fe10216129abd09 Reviewed-on: http://gerrit.sjc.cloudera.com:8080/4016 Reviewed-by: Alex Behm <alex.behm@cloudera.com> Tested-by: jenkins Reviewed-on: http://gerrit.sjc.cloudera.com:8080/4079