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These functions are implemented as rewrites in the analysis stage. They are rewritten as different arithmetic expressions and make use of the existing analytic functions such as 'rank', 'count' and 'row_number' to compute the final results. TODO: IMPALA-2171: NTILE() currently takes only constant expressions. We need to modify it to take non-constant expressions as well in a future patch. Change-Id: I8773df8ceefff27ab66a41169dc4ac0927465191 Reviewed-on: http://gerrit.cloudera.org:8080/584 Tested-by: Internal Jenkins Reviewed-by: Henry Robinson <henry@cloudera.com>
This directory contains Impala test workloads. The directory layout for the workloads should follow: workloads/ <data set name>/<data set name>_dimensions.csv <- The test dimension file <data set name>/<data set name>_core.csv <- A test vector file <data set name>/<data set name>_pairwise.csv <data set name>/<data set name>_exhaustive.csv <data set name>/queries/<query test>.test <- The queries for this workload