Support ALTER SYSTEM
Summary
Successor to !1012 (closed). Rebased version with minor fixes
Corresponding sbroad MR: sbroad!479 (merged)
- Cherry-pick to: none
- Docs follow-up: docs#330 (closed)
- Related #723 (closed)
Edited by Alexander Kurdakov
Successor to !1012 (closed). Rebased version with minor fixes
Corresponding sbroad MR: sbroad!479 (merged)