錯誤1064靠近'LEFT JOIN'

Question

我創建了兩個臨時表並使用以下代碼將它們連接在一起，但遇到ERROR 1064 near 'LEFT JOIN'。

(SELECT DISTINCT routes.route_short_name, MIN(stop_times.stop_sequence) AS first_stop, stops.stop_name AS first_stop_name 
FROM trips 
JOIN routes ON ... 
JOIN stop_times ON ... 
JOIN stops ON ... 
JOIN calendar ON ... 
GROUP BY stop_times.trip_id) first_table 
LEFT JOIN 
(SELECT DISTINCT routes.route_short_name, MAX(stop_times.stop_sequence) AS last_stop, stops.stop_name AS last_stop_name 
FROM trips 
JOIN routes ON ... 
JOIN stop_times ON ... 
JOIN stops ON ... 
JOIN calendar ON ... 
GROUP BY stop_times.trip_id) last_table 
ON first_table.route_short_name = last_table.route_short_name; 

期望的結果是這樣的：

route_short_name, first_stop_name, last_stop_name 
... 

Answer 1

你不缺少實際的主select語句？

SELECT route_short_name, first_stop_name, last_stop_name FROM --this part is missing 
(SELECT DISTINCT ...) first_table 
LEFT JOIN 
(SELECT DISTINCT ...) last_table 
ON first_table.route_short_name = last_table.route_short_name;