### SQLDelight Version 2.0.2 ### SQLDelight Dialect PostgreSQL ### Describe the Bug I'm trying to write a `sqm` migration file: ```sql ALTER TABLE ProductUpdateDb ADD COLUMN IF NOT EXISTS apps_labels VARCHAR[] DEFAULT '{}'; ``` But I got the following warning: <img width="491" alt="image" src="https://github.com/cashapp/sqldelight/assets/60164099/e95aa82d-3063-47c1-bad1-7ac0fc07b748"> There are something wrong with my statement? or `IF NOT EXISTS` it's not supported yet? ### Stacktrace _No response_