[BUG]: truncated tables on ALTER COLUMN statements

[ORESoftware]

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• I have verified that the bug I'm about to report hasn't been filed before.

What version of drizzle-orm are you using?

drizzle-orm: v0.39.3

What version of drizzle-kit are you using?

drizzle-kit: v0.30.4 drizzle-orm: v0.39.3

Other packages

drizzle-kit: v0.30.4 drizzle-orm: v0.39.3

Describe the Bug

https://gist.github.com/ORESoftware/d74b1e6ffd7f02fd658d28c5597a3367

doing migration with Drizzle ORM delete/truncated all data from our "skills" table:

ALTER TABLE "skills" ALTER COLUMN "skill_desc" SET DATA TYPE jsonb;
ALTER TABLE "skills" ALTER COLUMN "skill_desc" SET DEFAULT '[]'::jsonb;
ALTER TABLE "skills" ALTER COLUMN "skill_desc" SET NOT NULL;

the initial error was that I could not convert skill_desc from text to jsonb automatically

not sure how it could ever result in truncating the whole table regardless....

it's happened more than once, so I need to figure out how to mitigate this :(

those statements were the ones printed and I assume they ran in that order....

[ORESoftware]

note those ALTER statements alone aren't capable of truncating a table, so it might be something else that drizzle is running? Crazy and scary