PostgreSQL右連接錯誤：在「右」或附近的語法錯誤

Question

請告訴我什麼是錯誤的SQL？

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條款應放置在您的查詢的末尾：

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