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Handling insertion issue when the dropping column's flag is not null and its state is 'WriteOnly' #8791
What problem does this PR solve?
Fix issue #8654
What is changed and how it works?
When the dropping column has a not-null flag and it hasn't the default value, we can backfill the column value like "add column".
@@ Coverage Diff @@ ## master #8791 +/- ## ========================================= Coverage ? 67.52% ========================================= Files ? 363 Lines ? 75099 Branches ? 0 ========================================= Hits ? 50710 Misses ? 19912 Partials ? 4477