-- 添加用户基础资料字段（出生年份、出生地、成长地、职业）
SET lock_timeout = '5s';
ALTER TABLE users ADD COLUMN IF NOT EXISTS birth_year INTEGER;
ALTER TABLE users ADD COLUMN IF NOT EXISTS birth_place VARCHAR;
ALTER TABLE users ADD COLUMN IF NOT EXISTS grew_up_place VARCHAR;
ALTER TABLE users ADD COLUMN IF NOT EXISTS occupation VARCHAR;
RESET lock_timeout;