tree 4087742af2d5948081bc27f2cc34adc7996f1f79
parent 44384a22643325bd0d16166d62a7a6d6c6bed3f4
author Yingyi Bu <yingyi@couchbase.com> 1483424390 -0800
committer Yingyi Bu <buyingyi@gmail.com> 1483493360 -0800

ASTERIXDB-1755: add UPSERT in SQL++.

Detailed list of changes included:
- Fix AQL RETURNING clause to use an expression instead of a query;
- Add a rule to check whether a RETURNING expression contains dataset accesses;
- Perform AST-level rewrites for INSERT/UPSERT as a whole, including the
  body query and the returning expression.

Change-Id: I02b2be7ff2653573eccb48037895f5c8c4bc8c74
Reviewed-on: https://asterix-gerrit.ics.uci.edu/1401
Tested-by: Jenkins <jenkins@fulliautomatix.ics.uci.edu>
Integration-Tests: Jenkins <jenkins@fulliautomatix.ics.uci.edu>
Reviewed-by: Yingyi Bu <buyingyi@gmail.com>