tree 02c7c8ca5ae38ba6f5dda59111cf6ac144dc7009
parent aa7ff7bd063ece0933be97d67bce647935c1ac57
author Dmitry Lychagin <dmitry.lychagin@couchbase.com> 1589332142 -0700
committer Dmitry Lychagin <dmitry.lychagin@couchbase.com> 1589416707 +0000

[NO ISSUE][COMP] Rename NOT NULL to NOT UNKNOWN

- user model changes: yes
- storage format changes: no
- interface changes: no

Details:
- Rename NOT NULL type quantifier to NOT UNKNOWN
  in CREATE DATASET type specification
- Add IsMissable field to datatype metadata to support
  storing all possible NULL/MISSING combinations

Change-Id: Ia7f22ba5d212e3b1824fafb571e1724f2fd25ea9
Reviewed-on: https://asterix-gerrit.ics.uci.edu/c/asterixdb/+/6306
Integration-Tests: Jenkins <jenkins@fulliautomatix.ics.uci.edu>
Tested-by: Jenkins <jenkins@fulliautomatix.ics.uci.edu>
Reviewed-by: Ali Alsuliman <ali.al.solaiman@gmail.com>