PostgreSQL RIGHT JOIN ERROR：语法错误在或附近＆＃34; RIGHT＆＃34;

Question

请告诉我这个sql有什么问题？

SELECT users_map.user_id 
FROM users_map
WHERE users_map.service_id = 1
AND users_map.service_user_id = 0
RIGHT OUTER JOIN user_data
ON users_map.user_id = user_data.user_id

Answer 1

WHERE子句应放在查询的末尾：

SELECT users_map.user_id 
FROM users_map
RIGHT OUTER JOIN user_data
  ON users_map.user_id = user_data.user_id
WHERE users_map.service_id = 1 AND 
      users_map.service_user_id = 0