multi mode

migrations/mysql/0025_user_theme.sql

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+ALTER TABLE users
+ADD COLUMN theme VARCHAR(5) NOT NULL DEFAULT 'dark',
+ADD CONSTRAINT chk_users_theme CHECK (theme IN ('dark', 'light'));

migrations/postgres/0025_user_theme.sql

@@ -0,0 +1,3 @@
+ALTER TABLE users
+ADD COLUMN theme TEXT NOT NULL DEFAULT 'dark'
+CHECK (theme IN ('dark', 'light'));

migrations/sqlite/0025_user_theme.sql

@@ -0,0 +1,3 @@
+ALTER TABLE users
+ADD COLUMN theme TEXT NOT NULL DEFAULT 'dark'
+CHECK (theme IN ('dark', 'light'));