qualified identifier

[yliuuuu]

Relevant Issues

• [Closes/Related To] Issue #XXX

Description

• Add grammar rule for qualified name.
• Support Parsing for using qualified name as table name in DDL command CREATE TABLE and DROP TABLE.
• We can reuse the rule for qualified name for other SQL object in the future if needed.

Backward compatible:

I don't think this PR is backward incompatible as the new AST carries the notion of qualified identifier, and uses the identifier as the output for CREATE TABLE and DROP TABLE node.

The grammar rule changes affected the generated Antlr Parser but no user should directly invoke the Antlr generated parser anyway (i.e., The Antlr generated parser should not be sem-ver-ed in my opinion.)

The Pig AST remains unmodified.

Other Information

• Updated Unreleased Section in CHANGELOG: [YES/NO]

  • Yes.

• Any backward-incompatible changes? [YES/NO]

  • No.

• Any new external dependencies? [YES/NO]

  • No.

• Do your changes comply with the Contributing Guidelines
  and Code Style Guidelines? [YES/NO]
  Yes.

License Information

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.

[github-actions]

Conformance comparison report

	Base (db1c85b)	5aad397	+/-
% Passing	92.54%	92.54%	0.00%
✅ Passing	5384	5384	0
❌ Failing	434	434	0
🔶 Ignored	0	0	0
Total Tests	5818	5818	0

Number passing in both: 5384

Number failing in both: 434

Number passing in Base (db1c85b) but now fail: 0

Number failing in Base (db1c85b) but now pass: 0

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 73.16%. Comparing base (db1c85b) to head (f1823eb).

Additional details and impacted files

@@             Coverage Diff              @@
##               main    #1411      +/-   ##
============================================
+ Coverage     73.14%   73.16%   +0.01%     
  Complexity     2393     2393              
============================================
  Files           247      247              
  Lines         17623    17627       +4     
  Branches       3176     3178       +2     
============================================
+ Hits          12890    12896       +6     
+ Misses         3856     3854       -2     
  Partials        877      877              

Flag	Coverage Δ
CLI	11.82% <ø> (ø)
EXAMPLES	80.07% <ø> (ø)
LANG	81.06% <100.00%> (+0.01%)	⬆️

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