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Xikui Wang <xkkwww@gmail.com>
committed
on 20 Jul 18
[ASTERIXDB-2412][COMP] ExtractCommonExpressionsRule fix
- user model changes: no
- storage format changes: no
- interface changes: no

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[ASTERIXDB-2412][COMP] ExtractCommonExpressionsRule fix

- user model changes: no

- storage format changes: no

- interface changes: no

Details:

ExtractCommonExpressionsRule should not be applied to JOIN by using

Cartesian Product + SELECT since it will add extract overhead. Also,

blindly adding SELECT without checking GROUP-BY and other possible OPs

in between could cause type inference error.

Change-Id: I20e1fa161c42e0494c7ca587b8bffdc80d656058

Reviewed-on: https://asterix-gerrit.ics.uci.edu/2770

Integration-Tests: Jenkins <jenkins@fulliautomatix.ics.uci.edu>

Tested-by: Jenkins <jenkins@fulliautomatix.ics.uci.edu>

Contrib: Jenkins <jenkins@fulliautomatix.ics.uci.edu>

Reviewed-by: Dmitry Lychagin <dmitry.lychagin@couchbase.com>

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