MG05 — DROP COLUMN destroys data and breaks dependents

Group: Migration safety · Auto-fixable: no

Dropping a column permanently deletes its data and breaks views, indexes, and client code that still reference it. Stage the removal: stop using the column, deploy, then drop it once nothing depends on it.

Example

bad:  ALTER TABLE t DROP COLUMN c;

Configure

Disable this rule in banshee.toml:

[lint]
exclude = ["MG05"]

Or silence one line with -- noqa: MG05. See Linting.