我有這個查詢的一個問題:LEFT OUTER JOIN產生不正確的語法
SELECT RTRIM(LTRIM(L_MAILITMS.MAILITM_FID)) AS Ref30
, IsNull (Ref33,0) as Ref33
FROM L_MAILITM_EVENTS
INNER JOIN L_MAILITMS ON L_MAILITM_EVENTS.MAILITM_PID = L_MAILITMS.MAILITM_PID
WHERE (L_MAILITMS.MAIL_CLASS_CD = 'E')
AND (L_MAILITM_EVENTS.EVENT_OFFICE_CD = 1063)
AND (L_MAILITM_EVENTS.EVENT_TYPE_CD = 30)
AND (L_MAILITM_EVENTS.EVENT_GMT_DT >= CONVERT(DATETIME, '2012-05-27 00:00:00', 102))
AND (L_MAILITM_EVENTS.EVENT_GMT_DT < CONVERT(DATETIME, '2012-05-28 00:00:00', 102))
LEFT OUTER JOIN
(
SELECT RTRIM(LTRIM(L_MAILITMS_1.MAILITM_FID)) as Ref3033
, COUNT(*) as Ref33
FROM L_MAILITM_EVENTS as L_MAILITM_EVENTS_1
INNER JOIN L_MAILITMS as L_MAILITMS_1 ON L_MAILITM_EVENTS_1.MAILITM_PID = L_MAILITMS_1.MAILITM_PID
WHERE (L_MAILITMS_1.MAIL_CLASS_CD = 'E')
AND (L_MAILITM_EVENTS_1.EVENT_OFFICE_CD = 1063)
AND (L_MAILITM_EVENTS_1.EVENT_TYPE_CD = 33)
AND (L_MAILITM_EVENTS_1.EVENT_GMT_DT >= CONVERT(DATETIME, '2012-05-27 00:00:00', 102))
GROUP BY L_MAILITMS_1.MAILITM_FID
) ON L_MAILITMS.MAILITM_FID = L_MAILITMS_1.MAILITM_FID
產生一個錯誤
消息156,級別15,狀態1,行7
附近有語法錯誤關鍵字「LEFT」。
Msg 156,Level 15,State 1,Line 16
關鍵字'ON'附近的語法不正確。
表L_MAILITMS_EVENTS:
MAILITM_PID EVENT_OFFICE_CD EVENT_TYPE_CD
-----------------------------------------------------------
1 1063 30
2 1063 30
2 1063 33
3 1063 33
3 1063 30
4 1063 30
表L_MAILITMS:
MAILITM_PID MAILITM_FID MAIL_CLASS_CD
-------------------------------------------------------
1 123 E
2 452 E
3 369 E
4 633 E
我想什麼:
Ref30 Ref33
-----------------------
123 0
452 1
369 1
633 0
UPDATE:感謝Sebas你[R幫助
*有另一種方式爲這個查詢,以保證速度的表現,因爲我把約2500 MAILITM_FID?*
誰能幫助? 謝謝
'JOINs'是'FROM'的子條款,它們不能出現在'WHERE'之後 –
您想要做什麼? –