多個表中的UNION ALL

我需要UNION ALL多個表。我通過PHP創建了一個查詢，並在沒有UNION ALL表的情況下成功運行。但是，當我聯盟所有2表，似乎查詢永遠不會結束於PHP頁面，我也在pgAdmin中測試了相同的結果。我通過shell獲取我想要選擇的數據而生成一個CSV文件，但查詢永遠不會結束。我會讚賞你的評論。提前致謝。多個表中的UNION ALL

這是UNION ALL查詢的多個表。可以是UNION ALL的表的數量取決於DateRangePicker。所以，在每天有一個表，例如：F_UCell_1_170123，F_UCell_1_170124，F_UCell_1_170125，F_UCell_1_170126等..

SELECT 
to_date(T1.day::text,'YYYYMMDD'), 
T1.hour, 
cellname, 
Item67204837, Item73393830, ... , (199 columns listed in 7 tables listed below) 

FROM ( 

SELECT 
day, 
hour, 
Cellkey, 
Item67204837, Item67199736 
FROM omstar_1486079935913_xsau.F_UCell_1_17

UNION ALL 

SELECT 
day, 
hour, 
Cellkey, 
Item67204837, Item67199736 
FROM omstar_1486079935913_xsau.F_UCell_1_170124) 

AS T1 

INNER JOIN ( 

SELECT 
day, 
hour, 
Cellkey, 
Item67183903, Item67180586, Item67183900, Item67180589, Item67180588, Item67180590, Item67183901, Item67180587, Item67183913, Item67183912, Item67180585 
FROM omstar_1486079935913_xsau.F_UCell_2_17

UNION ALL 
SELECT 
day, 
hour, 
Cellkey, 
Item67183903, Item67180586, Item67183900, Item67180589, Item67180588, Item67180590, Item67183901, Item67180587, Item67183913, Item67183912, Item67180585 
FROM omstar_1486079935913_xsau.F_UCell_2_170124) 

AS T2 ON 
T1.day = T2.day AND 
T1.hour = T2.hour AND 
T1.Cellkey = T2.Cellkey 

INNER JOIN (

SELECT 
day, 
hour, 
Cellkey, 
Item73394021, Item67190477, Item73394022, Item67189750, Item67190411, Item67189749, Item73425007, Item67189756, Item67189757, Item73425013, Item73394018, Item67193405, Item67189754, Item67190476, Item67192661, Item67193406, Item67192660, Item73425009, Item67189755, Item73426857, Item67190412, Item73425012, Item73426856, Item73425008, Item73423107 
FROM omstar_1486079935913_xsau.F_UCell_3_17

UNION ALL 
SELECT day, hour, Cellkey, Item73394021, Item67190477, Item73394022, Item67189750, Item67190411, Item67189749, Item73425007, Item67189756, Item67189757, Item73425013, Item73394018, Item67193405, Item67189754, Item67190476, Item67192661, Item67193406, Item67192660, Item73425009, Item67189755, Item73426857, Item67190412, Item73425012, Item73426856, Item73425008, Item73423107 
FROM omstar_1486079935913_xsau.F_UCell_3_170124) 

AS T3 ON 
T1.day = T3.day AND 
T1.hour = T3.hour AND 
T1.Cellkey = T3.Cellkey 

INNER JOIN ( 

SELECT day, hour, Cellkey, Item67193538, Item67190406, Item67193542, Item67179830, Item67192612, Item67193613, Item67190506, Item67179858, Item67193611, Item73403809, Item73424888, Item67179825, Item67193543, Item67189494, Item67189496, Item67193539, Item67193540, Item67180083, Item67180081, Item67190457, Item73424884, Item67190840, Item73393835, Item67180078, Item67189568, Item67179967, Item73393837, Item67180077, Item67180079, Item67193537, Item67190505, Item67189557, Item73424885, Item67180067, Item73426209, Item73394298, Item73423519, Item67190461, Item67192613, Item67180082, Item67179777, Item67190409, Item67203416, Item67179780, Item67180074, Item67180069, Item67179930, Item67189572, Item67180076, Item67190841, Item67190408, Item73424887, Item67193541, Item73393836, Item67193612, Item73424889, Item67180080, Item67192610, Item67192611, Item67193614, Item67190407, Item67179827, Item73424886, Item67180068, Item67193536, Item67179864, Item67179922, Item67179925, Item67179778, Item67179926, Item67179781, Item67179927, Item67179826, Item67179921, Item67179928, Item67179924, Item67179828, Item67179923, Item67179779, 
FROM omstar_1486079935913_xsau.F_UCell_4_17

UNION ALL 

SELECT day, hour, Cellkey, Item67193538, Item67190406, Item67193542, Item67179830, Item67192612, Item67193613, Item67190506, Item67179858, Item67193611, Item73403809, Item73424888, Item67179825, Item67193543, Item67189494, Item67189496, Item67193539, Item67193540, Item67180083, Item67180081, Item67190457, Item73424884, Item67190840, Item73393835, Item67180078, Item67189568, Item67179967, Item73393837, Item67180077, Item67180079, Item67193537, Item67190505, Item67189557, Item73424885, Item67180067, Item73426209, Item73394298, Item73423519, Item67190461, Item67192613, Item67180082, Item67179777, Item67190409, Item67203416, Item67179780, Item67180074, Item67180069, Item67179930, Item67189572, Item67180076, Item67190841, Item67190408, Item73424887, Item67193541, Item73393836, Item67193612, Item73424889, Item67180080, Item67192610, Item67192611, Item67193614, Item67190407, Item67179827, Item73424886, Item67180068, Item67193536, Item67179864, Item67179922, Item67179925, Item67179778, Item67179926, Item67179781, Item67179927, Item67179826, Item67179921, Item67179928, Item67179924, Item67179828, Item67179923, Item67179779, Item67179782 
FROM omstar_1486079935913_xsau.F_UCell_4_170124) 

AS T4 ON 
T1.day = T4.day AND 
T1.hour = T4.hour AND 
T1.Cellkey = T4.Cellkey 

INNER JOIN ( 

SELECT 
day, 
hour, 
Cellkey, 
Item67199780, Item73423508, Item67190405, Item73423488, Item73423498, Item67179331, Item67199680, Item67199619, Item67179527, Item67179462, Item73423506, Item67190586, Item67204827, Item73423510, Item67192609, Item67190401, Item67179465, Item67180641, Item67179459, Item67179336, Item67179464, Item73423490, Item67193609, Item73423502, Item73410511, Item67179338, Item73423486, Item67190404, Item67179457, Item67193610, Item67179299, Item73423504, Item67199625, Item67199623, Item67179332, Item67199556, Item73423494, Item67199621, Item73423496, Item67199624, Item67179466, Item67179460, Item67180642, Item67190621, Item67179329, Item67199620, Item73423492, Item67204826, Item67179337, Item67199682, Item73425032, Item67179334, Item67199622, Item67180648, Item67192608, Item67179525, Item73410510, Item67179524 
FROM omstar_1486079935913_xsau.F_UCell_5_17

UNION ALL 

SELECT 
day, 
hour, 
Cellkey, 
Item67199780, Item73423508, Item67190405, Item73423488, Item73423498, Item67179331, Item67199680, Item67199619, Item67179527, Item67179462, Item73423506, Item67190586, Item67204827, Item73423510, Item67192609, Item67190401, Item67179465, Item67180641, Item67179459, Item67179336, Item67179464, Item73423490, Item67193609, Item73423502, Item73410511, Item67179338, Item73423486, Item67190404, Item67179457, Item67193610, Item67179299, Item73423504, Item67199625, Item67199623, Item67179332, Item67199556, Item73423494, Item67199621, Item73423496, Item67199624, Item67179466, Item67179460, Item67180642, Item67190621, Item67179329, Item67199620, Item73423492, Item67204826, Item67179337, Item67199682, Item73425032, Item67179334, Item67199622, Item67180648, Item67192608, Item67179525, Item73410510, Item67179524 
FROM omstar_1486079935913_xsau.F_UCell_5_170124) 

AS T5 ON 
T1.day = T5.day AND 
T1.hour = T5.hour AND 
T1.Cellkey = T5.Cellkey 

INNER JOIN ( 

SELECT 
day, 
hour, 
Cellkey, 
Item67180483, Item67180498, Item67180508, Item67192689, Item67180484, Item67180491, Item67180490, Item67180509, Item67180499 
FROM omstar_1486079935913_xsau.F_UCell_6_17

UNION ALL 

SELECT 
day, 
hour, 
Cellkey, 
Item67180483, Item67180498, Item67180508, Item67192689, Item67180484, Item67180491, Item67180490, Item67180509, Item67180499 
FROM omstar_1486079935913_xsau.F_UCell_6_170124) 

AS T6 ON 
T1.day = T6.day AND 
T1.hour = T6.hour AND 
T1.Cellkey = T6.Cellkey 

INNER JOIN ( 

SELECT 
day, 
hour, 
Cellkey, 
Item67189840, Item67192114, Item67203850, Item67192486, Item67190567, Item67192115, Item67192487, Item67190704, Item73403763, Item73393832, Item73403761, Item67190705, Item67202932, Item73393830 
FROM omstar_1486079935913_xsau.F_UCell_8_17

UNION ALL 

SELECT 
day, 
hour, 
Cellkey, 
Item67189840, Item67192114, Item67203850, Item67192486, Item67190567, Item67192115, Item67192487, Item67190704, Item73403763, Item73393832, Item73403761, Item67190705, Item67202932, Item73393830 
FROM omstar_1486079935913_xsau.F_UCell_8_170124) 

AS T7 ON 
T1.day = T7.day AND 
T1.hour = T7.hour AND 
T1.Cellkey = T7.Cellkey 

INNER JOIN 

omstar_1486079935913_xsau.d_ucell as Tn on T1.cellkey = Tn.cellkey 

WHERE Cellname IN ('U06CZPA') ORDER BY T1.day, T1.hour;

列分佈在F_UCell_1或F_UCell_2或者...或者F_UCell_6或F_UCell_8。 它缺少F_UCell_7現在

來源

2017-02-21 Beaver

所有ItemXXXXXXXX字段是我想要在第一個SELECT中選擇的字段。它們分佈在表F_UCell中以完成要選擇的203列。 – Beaver

在你的例子中你沒有配對Item67179782。如果它在查詢中是相同的，那麼你將會有一個錯誤，因爲'UNION'需要在兩個聯合表中都有相同數量的列。 '它似乎查詢永遠不會在PHP頁面結束' - 可能你的PHP代碼可以澄清問題。 –

PHP文件打印我粘貼的查詢，所有列匹配每個UNION ALL，並且沒有錯誤。當php中執行pg_query這行時，它的nevera結束，繼續他們的代碼...我沒有PHP文件可用。我會盡快粘貼 – Beaver

@alex_edev，進出口檢驗（由INNER JOIN JOIN共7臺），它工作正常只有一列，所以它是一個性能問題。另外，我在同一個局域網中有不同的服務器（1個用於網頁，另一個用於數據庫服務器）。所有列的結果約爲150 MB，因此可能是網絡問題。 [email protected]本H，表的設計是以前設計的一個已經有數據，所以重新設計表不是一個選項。

來源

2017-02-21 17:46:26 Beaver

多個表中的UNION ALL

回答

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