refactor(query): optimize alter table modify column default-only path#19424

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dantengsky wants to merge 21 commits intodatabendlabs:mainfrom

dantengsky:feat/main-branch-alter-col-type-no-write

Commits on Feb 8, 2026

Commits on Feb 9, 2026

fix(altertable): rebuild for non-deterministic defaults
dantengsky
committed

Commits on Feb 10, 2026

fix(altertable): guard change-tracking tables against default-only schema changes
dantengsky
committed
test(altertable): cover remove-default and empty change-tracking table
dantengsky
committed
fix(test): nullable column without default fills NULL, not 0
dantengsky
committed

Commits on Feb 11, 2026