WL#8065: True bottom-up server parser: refactoring of the EXPLAIN statement
The rest of work: EXPLAIN/DESCRIBE TABLE and EXPLAIN FOR CONNECTION.
This WL is intended to refactor EXPLAIN (and its aliases:
NF-1: No performance degradation is expected.
WL#8062: True bottom-up server parser: refactoring of the UPDATE statement
This WL is intended to refactor the grammar of the
EXPLAIN/DESCRIBE/DESC SELECT/INSERT/REPLACE/UPDATE/DELETE/FOR CONNECTION statement in a pure context-independent bottom-up style for the better maintainability and extendibility.
This WL uses the framework and the methodology of the refactoring from the WL#7199 "True bottom-up server parser: common framework for the refactoring".
No user-visible changes. No documentation required.
New parse tree node classes
|Class name||Related syntax|
Removal of unneeded "global" variables and constants
- DESCRIBE_NONE and DESCRIBE_NORMAL