nullable fields

server/src/db/schema.sql

@@ -112,10 +112,16 @@ CREATE INDEX IF NOT EXISTS protocols_user_id_idx ON protocols(user_id);
 -- User profile — lab defaults pre-filled on chemical entries
 CREATE TABLE IF NOT EXISTS user_profile (
   user_id TEXT NOT NULL PRIMARY KEY REFERENCES "user"("id") ON DELETE CASCADE,
-  pi_first_name TEXT NOT NULL,
-  bldg_code TEXT NOT NULL,
-  lab TEXT NOT NULL,
+  pi_first_name TEXT,
+  bldg_code TEXT,
+  lab TEXT,
   contact TEXT,
   created_at TIMESTAMPTZ DEFAULT NOW(),
   updated_at TIMESTAMPTZ DEFAULT NOW()
 );
+
+-- Allow existing deployments to have nullable profile fields.
+-- DROP NOT NULL on an already-nullable column is a no-op in Postgres.
+ALTER TABLE user_profile ALTER COLUMN pi_first_name DROP NOT NULL;
+ALTER TABLE user_profile ALTER COLUMN bldg_code DROP NOT NULL;
+ALTER TABLE user_profile ALTER COLUMN lab DROP NOT NULL;