-- 检查 user_scenarios 表的所有约束
SELECT
    con.conname AS constraint_name,
    con.contype AS constraint_type,
    pg_get_constraintdef(con.oid) AS constraint_definition
FROM pg_constraint con
JOIN pg_class rel ON rel.oid = con.conrelid
WHERE rel.relname = 'user_scenarios'
ORDER BY con.conname;