SPARK-2226: [SQL] transform HAVING clauses with aggregate expressions that...
SPARK-2226: [SQL] transform HAVING clauses with aggregate expressions that aren't in the aggregation list This change adds an analyzer rule to 1. find expressions in `HAVING` clause filters that depend on unresolved attributes, 2. push these expressions down to the underlying aggregates, and then 3. project them away above the filter. It also enables the `HAVING` queries in the Hive compatibility suite. Author: William Benton <willb@redhat.com> Closes #1497 from willb/spark-2226 and squashes the following commits: 92c9a93 [William Benton] Removed unnecessary import f1d4f34 [William Benton] Cleanups missed in prior commit 0e1624f [William Benton] Incorporated suggestions from @marmbrus; thanks! 541d4ee [William Benton] Cleanups from review 5a12647 [William Benton] Explanatory comments and stylistic cleanups. c7f2b2c [William Benton] Whitelist HAVING queries. 29a26e3 [William Benton] Added rule to handle unresolved attributes in HAVING clauses (SPARK-2226)
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