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ASTERIXDB-1226: implement SQL++ core group-by semantics and syntatic sugars.

-Implmented SQL++ core group-by semantics;

-Implemented SQL++ group-by syntatic sugars for standard SQL;

-Added test cases;

-Fixed column alias rewriter;

-Fixed the variable scoping for joins.

Change-Id: I6e5477d5bf80114cfff49c8ecb163849ee55eba6

Reviewed-on: https://asterix-gerrit.ics.uci.edu/752

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

Reviewed-by: Till Westmann <tillw@apache.org>

  1. … 1963 more files in changeset.
Enabled Datasets to use Datatypes from foreign Dataverses

Removed broken Metadata Secondary Indexes

Added DatatypeDataverse field to Dataset

Cleaned up Metadata Tests

Added tests for dropping used Datatypes

User-facing changes are:

1) Allow qualified datatype when creating dataset

2) Metadata queries for datasets will now

include the type dataverse

Change-Id: I24dbc04dcb2a4126fc8361ebe3104877a0d1f2bb

Reviewed-on: https://asterix-gerrit.ics.uci.edu/558

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

Reviewed-by: abdullah alamoudi <bamousaa@gmail.com>

  1. … 139 more files in changeset.
SQL++ parser: 1. refactored asterix-aql to become asterix-lang-common and asterix-lang-aql, where the former is the common part for different languages; 2. added asterix-lang-sqlpp on top of asterix-lang-common; 3. ported parser tests, optimizer tests and runtime tests in asterix-app to their sql++ version, and added parser tests for all the queries.

Change-Id: Ie5af4e3b692ca017ec047a1ba3b404a51beb3a2e

Reviewed-on: https://asterix-gerrit.ics.uci.edu/466

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

Reviewed-by: Till Westmann <tillw@apache.org>

  1. … 10221 more files in changeset.