MYSQL-UNION第二数据集未返回结果

时间：2018-10-04 23:35:15

标签： mysql sql mysql-workbench union

所以

我不知道发生了什么。这两个查询都可以正常运行。出于某种原因，尽管当我尝试将它们联合在一起时，我只会获得顶部查询的数据。

我非常感谢您提供一些指导。第二个查询基本上返回第一个查询缺少的数据的结果。我只是不确定发生了什么。

我可能不知道这很简单，但是我尝试了很多不同的方法，似乎没有办法解决问题。

(SELECT

   date(dg.date) as 'Date',
   (pd.nid) as 'NID',
   if((bl.nid ) is not null,1,0) as 'Blocks',
   pd.special_weekday as 'Weekday Price',
   pd.special_weekend as 'Weekend Price',
   pd.special_weekly as 'Weekly Price',
   pd.special_minstay as 'Minimum Nights'
from (
   select DATE_ADD(curdate(), INTERVAL (@i:=@i+1)-1 DAY) as `Date`
   from information_schema.columns,(SELECT @i:=0) gen_sub 
   where (DATE_ADD(curdate(),INTERVAL @i DAY) BETWEEN curdate() AND date_add(curdate(), INTERVAL 1 DAY)) 
) dg
LEFT JOIN
(SELECT  
n.nid as `nid`,
ifnull(p.special_from,p2.special_from) as `special_from`,
ifnull(p.special_to,p2.special_to) as 'special_to',
ifnull(p.special_weekdayprice,p2.special_weekdayprice) as `special_weekday`,
ifnull(p.special_weekendprice,p2.special_weekendprice) as `special_weekend`,
ifnull(p.special_weeklyprice,p2.special_weeklyprice) as `special_weekly`,
ifnull(p.special_minstay,p2.special_minstay) as `special_minstay`,
n.state_name as `state_name`

FROM 
radb.property_state_machine n 
LEFT JOIN radb.rep_property rep on n.nid=rep.parent
LEFT JOIN radb.rep_property rep1 on n.nid=rep1.nid
LEFT JOIN radb.price_dates p on n.nid=p.nid 
LEFT JOIN radb.price_dates p2 on rep1.parent=p2.nid 
WHERE n.state_name='Live' AND ( (rep.nid = 0 OR isnull(rep.nid)))) pd on ((pd.special_to IS NULL OR date(pd.special_to) >= dg.date)) AND (date(pd.special_from) <= dg.date )
LEFT JOIN
radb.node n on pd.nid=n.nid
LEFT JOIN
radb.profile_value pv on n.uid=pv.uid
LEFT JOIN
radb.admin_book bl  on ((date(bl.book_end) IS NULL OR date(bl.book_end) >= dg.date) and pd.nid=bl.nid) AND (date(bl.book_start) <= dg.date AND pd.nid=bl.nid)



GROUP BY 1,2)

UNION ALL



(SELECT

   date(dt.date) as 'Date',
    (tm.nid) as 'NID',
   if((tm.nid) is not null,1,0) as 'Blocks',
   null,
   null,
   null,
   null

FROM (
   select DATE_ADD(curdate(), INTERVAL (@i:=@i+1)-1 DAY) as `Date`
   from information_schema.columns,(SELECT @i:=0) gen_sub 
   where (DATE_ADD(curdate(),INTERVAL @i DAY) BETWEEN curdate() AND date_add(curdate(), INTERVAL 1 DAY)) 
) dt
LEFT JOIN
(SELECT  
n1.nid as `nid`,
ifnull(m.book_start,m2.book_start) as `book_start`,
ifnull(m.book_end,m2.book_end) as `book_end`,
n1.state_name as `state_name`

FROM 
radb.property_state_machine n1
LEFT JOIN radb.rep_property rp on n1.nid=rp.parent
LEFT JOIN radb.rep_property rp1 on n1.nid=rp1.nid
LEFT JOIN radb.admin_book_temp m on n1.nid=m.nid 
LEFT JOIN radb.admin_book_temp m2 on rp1.parent=m2.nid 
WHERE n1.state_name='Live' AND ( (rp.nid = 0 OR isnull(rp.nid)))) tm  on ((date(tm.book_end) IS NULL OR date(tm.book_end) >= dt.date)  ) AND (date(tm.book_start) <= dt.date  ) 
LEFT JOIN
radb.node n2 on tm.nid=n2.nid
LEFT JOIN
radb.profile_value pv on n2.uid=pv.uid




GROUP BY 1,2)

版本2-即使我将UNION包装在子选择中，问题仍然相同

SELECT
 x.date as 'Date',
 x.NID as 'NID',
 x.blocks as 'Blocks',
 x.weekday as 'Weekday',
 x.weekend as 'Weekend',
 x.weekly as 'Weekly',
 x.min as 'Nights'
 FROM
   (SELECT date(dg.date) as 'Date',
   (pd.nid) as 'NID',
   if((bl.nid ) is not null,1,0) as 'Blocks',
   pd.special_weekday as 'Weekday',
   pd.special_weekend as 'Weekend',
   pd.special_weekly as 'Weekly',
   pd.special_minstay as 'min'
from (
   select DATE_ADD(curdate(), INTERVAL (@i:=@i+1)-1 DAY) as `Date`
   from information_schema.columns,(SELECT @i:=0) gen_sub 
   where (DATE_ADD(curdate(),INTERVAL @i DAY) BETWEEN curdate() AND date_add(curdate(), INTERVAL 1 DAY)) 
) dg
LEFT JOIN
(SELECT  
n.nid as `nid`,
ifnull(p.special_from,p2.special_from) as `special_from`,
ifnull(p.special_to,p2.special_to) as 'special_to',
ifnull(p.special_weekdayprice,p2.special_weekdayprice) as `special_weekday`,
ifnull(p.special_weekendprice,p2.special_weekendprice) as `special_weekend`,
ifnull(p.special_weeklyprice,p2.special_weeklyprice) as `special_weekly`,
ifnull(p.special_minstay,p2.special_minstay) as `special_minstay`,
n.state_name as `state_name`

FROM 
radb.property_state_machine n 
LEFT JOIN radb.rep_property rep on n.nid=rep.parent
LEFT JOIN radb.rep_property rep1 on n.nid=rep1.nid
LEFT JOIN radb.price_dates p on n.nid=p.nid 
LEFT JOIN radb.price_dates p2 on rep1.parent=p2.nid 
WHERE n.state_name='Live' AND ( (rep.nid = 0 OR isnull(rep.nid)))) pd on ((pd.special_to IS NULL OR date(pd.special_to) >= dg.date)) AND (date(pd.special_from) <= dg.date )
LEFT JOIN
radb.admin_book bl  on ((date(bl.book_end) IS NULL OR date(bl.book_end) >= dg.date) and pd.nid=bl.nid) AND (date(bl.book_start) <= dg.date AND pd.nid=bl.nid)





UNION ALL
SELECT

   date(dt.date) as 'Date',
    (tm.nid) as 'NID',
   if((tm.nid) is not null,1,0) as 'Blocks',
   null as'Weekday',
   null as 'Weekend',
   null as 'Weekly',
   null as 'Nights'

FROM (
   select DATE_ADD(curdate(), INTERVAL (@i:=@i+1)-1 DAY) as `Date`
   from information_schema.columns,(SELECT @i:=0) gen_sub 
   where (DATE_ADD(curdate(),INTERVAL @i DAY) BETWEEN curdate() AND date_add(curdate(), INTERVAL 1 DAY)) 
) dt
LEFT JOIN
(SELECT  
n.nid as `nid`,
ifnull(p.book_start,p2.book_start) as `book_start`,
ifnull(p.book_end,p2.book_end) as `book_end`,
n.state_name as `state_name`

FROM 
radb.property_state_machine n 
LEFT JOIN radb.rep_property rep on n.nid=rep.parent
LEFT JOIN radb.rep_property rep1 on n.nid=rep1.nid
LEFT JOIN radb.admin_book_temp p on n.nid=p.nid 
LEFT JOIN radb.admin_book_temp p2 on rep1.parent=p2.nid 
WHERE n.state_name='Live' AND ( (rep.nid = 0 OR isnull(rep.nid)))) tm  on ((date(tm.book_end) IS NULL OR date(tm.book_end) >= dt.date)  ) AND (date(tm.book_start) <= dt.date  ) 


 ) x
LEFT JOIN
radb.node n on x.nid=n.nid
LEFT JOIN
radb.profile_value pv on n.uid=pv.uid

GROUP BY x.date,x.nid,x.blocks,x.weekday,x.weekend,x.weekly,x.min

样品结果

DATA SET #1

# Date, NID, Blocks, Weekday Price, Weekend Price, Weekly Price, Minimum Nights
'2018-10-05', '190668', '1', '165', '165', '165', '3'
'2018-10-05', '190669', '1', '235', '235', '231', '2'
'2018-10-05', '190671', '0', '176', '133', '142', '2'
'2018-10-05', '190672', '1', '661', '661', '658', '4'
'2018-10-05', '190673', '1', '203', '203', '138', '2'
'2018-10-05', '190675', '1', '219', '219', '158', '4'
'2018-10-05', '190676', '1', '204', '204', '197', '3'
'2018-10-05', '190677', '1', '235', '235', '217', '3'


DATA SET #2

# Date, NID, Blocks, Weekday Price, Weekend Price, Weekly Price, Minimum Nights
'2018-10-05', '190670', '1', NULL, NULL, NULL, NULL
'2018-10-06', '190670', '1', NULL, NULL, NULL, NULL
'2018-10-05', '190680', '1', NULL, NULL, NULL, NULL
'2018-10-05', '190885', '1', NULL, NULL, NULL, NULL
'2018-10-06', '190885', '1', NULL, NULL, NULL, NULL
'2018-10-05', '190933', '1', NULL, NULL, NULL, NULL
'2018-10-05', '191063', '1', NULL, NULL, NULL, NULL
'2018-10-06', '191063', '1', NULL, NULL, NULL, NULL

基本上，这两个数据集应该附加，因为第二个数据集填补了数据集1缺失的空白。第二个数据集将没有最后4列的数据。

2 个答案:

答案 0 :(得分：0)

尝试一下。我认为两个表中的列名应该相同。

(SELECT

   date(dg.date) as 'Date',
   (pd.nid) as 'NID',
   if((bl.nid ) is not null,1,0) as 'Blocks',
   pd.special_weekday as 'Weekday Price',
   pd.special_weekend as 'Weekend Price',
   pd.special_weekly as 'Weekly Price',
   pd.special_minstay as 'Minimum Nights'
from (
   select DATE_ADD(curdate(), INTERVAL (@i:=@i+1)-1 DAY) as `Date`
   from information_schema.columns,(SELECT @i:=0) gen_sub 
   where (DATE_ADD(curdate(),INTERVAL @i DAY) BETWEEN curdate() AND date_add(curdate(), INTERVAL 1 DAY)) 
) dg
LEFT JOIN
(SELECT  
n.nid as `nid`,
ifnull(p.special_from,p2.special_from) as `special_from`,
ifnull(p.special_to,p2.special_to) as 'special_to',
ifnull(p.special_weekdayprice,p2.special_weekdayprice) as `special_weekday`,
ifnull(p.special_weekendprice,p2.special_weekendprice) as `special_weekend`,
ifnull(p.special_weeklyprice,p2.special_weeklyprice) as `special_weekly`,
ifnull(p.special_minstay,p2.special_minstay) as `special_minstay`,
n.state_name as `state_name`

FROM 
radb.property_state_machine n 
LEFT JOIN radb.rep_property rep on n.nid=rep.parent
LEFT JOIN radb.rep_property rep1 on n.nid=rep1.nid
LEFT JOIN radb.price_dates p on n.nid=p.nid 
LEFT JOIN radb.price_dates p2 on rep1.parent=p2.nid 
WHERE n.state_name='Live' AND ( (rep.nid = 0 OR isnull(rep.nid)))) pd on ((pd.special_to IS NULL OR date(pd.special_to) >= dg.date)) AND (date(pd.special_from) <= dg.date )
LEFT JOIN
radb.node n on pd.nid=n.nid
LEFT JOIN
radb.profile_value pv on n.uid=pv.uid
LEFT JOIN
radb.admin_book bl  on ((date(bl.book_end) IS NULL OR date(bl.book_end) >= dg.date) and pd.nid=bl.nid) AND (date(bl.book_start) <= dg.date AND pd.nid=bl.nid)



GROUP BY 1,2)

UNION ALL



(SELECT

   date(dt.date) as 'Date',
    (tm.nid) as 'NID',
   if((tm.nid) is not null,1,0) as 'Blocks',
   null as 'Weekday Price',
   null as 'Weekend Price',
   null as 'Weekly Price',
   null as 'Minimum Nights'

FROM (
   select DATE_ADD(curdate(), INTERVAL (@i:=@i+1)-1 DAY) as `Date`
   from information_schema.columns,(SELECT @i:=0) gen_sub 
   where (DATE_ADD(curdate(),INTERVAL @i DAY) BETWEEN curdate() AND date_add(curdate(), INTERVAL 1 DAY)) 
) dt
LEFT JOIN
(SELECT  
n1.nid as `nid`,
ifnull(m.book_start,m2.book_start) as `book_start`,
ifnull(m.book_end,m2.book_end) as `book_end`,
n1.state_name as `state_name`

FROM 
radb.property_state_machine n1
LEFT JOIN radb.rep_property rp on n1.nid=rp.parent
LEFT JOIN radb.rep_property rp1 on n1.nid=rp1.nid
LEFT JOIN radb.admin_book_temp m on n1.nid=m.nid 
LEFT JOIN radb.admin_book_temp m2 on rp1.parent=m2.nid 
WHERE n1.state_name='Live' AND ( (rp.nid = 0 OR isnull(rp.nid)))) tm  on ((date(tm.book_end) IS NULL OR date(tm.book_end) >= dt.date)  ) AND (date(tm.book_start) <= dt.date  ) 
LEFT JOIN
radb.node n2 on tm.nid=n2.nid
LEFT JOIN
radb.profile_value pv on n2.uid=pv.uid




GROUP BY 1,2)

答案 1 :(得分：0)

所以

在考虑了该逻辑几个小时并进行了一些试验和错误之后，我意识到由于生成的日期子查询，它无法合并。因此，我重述了查询运行方式的逻辑。

下面是我的工作SQL。谢谢大家的帮助。

SELECT 
b.nid as 'NID',
dg.date as 'Date',
if((bl.nid is not null) or isnull(b.weekday), 1,0) as 'Blocks',
b.weekday as 'Weekday',
b.weekend as 'Weekend',
b.weekly as 'Weekly',
b.nights as 'Nights'
as 'Nights'

FROM
(
   select DATE_ADD(curdate(), INTERVAL (@i:=@i+1)-1 DAY) as `Date`
   from information_schema.columns,(SELECT @i:=0) gen_sub 
   where (DATE_ADD(curdate(),INTERVAL @i DAY) BETWEEN curdate() AND date_add(curdate(), INTERVAL 1 DAY)) 
) dg
LEFT JOIN
(SELECT


   (pd.nid) as 'NID',
   pd.special_from as 'start',
   pd.special_to as 'end',
   pd.special_weekday as 'Weekday',
   pd.special_weekend as 'Weekend',
   pd.special_weekly as 'Weekly',
   pd.special_minstay as 'Nights'
from 

(SELECT  
n.nid as `nid`,
ifnull(p.special_from,p2.special_from) as `special_from`,
ifnull(p.special_to,p2.special_to) as 'special_to',
ifnull(p.special_weekdayprice,p2.special_weekdayprice) as `special_weekday`,
ifnull(p.special_weekendprice,p2.special_weekendprice) as `special_weekend`,
ifnull(p.special_weeklyprice,p2.special_weeklyprice) as `special_weekly`,
ifnull(p.special_minstay,p2.special_minstay) as `special_minstay`,
n.state_name as `state_name`

FROM 
radb.property_state_machine n 
LEFT JOIN radb.rep_property rep on n.nid=rep.parent
LEFT JOIN radb.rep_property rep1 on n.nid=rep1.nid
LEFT JOIN radb.price_dates p on n.nid=p.nid 
LEFT JOIN radb.price_dates p2 on rep1.parent=p2.nid 
WHERE ( (rep.nid = 0 OR isnull(rep.nid)))) pd 





UNION ALL



SELECT


    (tm.nid) as 'NID',
    tm.book_start as 'start',
    tm.book_end as 'end',
   null,
   null,
   null,
   null

FROM 
(SELECT 
nd2.nid as 'nid',
ifnull(t.book_start,t2.book_start) as `book_start`,
ifnull(t.book_end,t2.book_end) as `book_end`
FROM radb.property_state_machine nd2
LEFT JOIN radb.rep_property rp on nd2.nid=rp.parent
LEFT JOIN radb.rep_property rp1 on nd2.nid=rp1.nid
LEFT JOIN radb.admin_book_temp t on nd2.nid=t.nid 
LEFT JOIN radb.admin_book_temp t2 on rp1.parent=t2.nid where ((rp.nid = 0 OR isnull(rp.nid)))
 ) tm  



) b on ((b.end IS NULL OR date(b.end) >= dg.date)) AND (date(b.start) <= dg.date )
LEFT JOIN
radb.admin_book bl on ((date(bl.book_end) IS NULL OR date(bl.book_end) >= dg.date) and bl.nid=b.nid) AND (date(bl.book_start) <= dg.date AND bl.nid=b.nid)
LEFT JOIN
radb.property_state_machine psm on b.nid=psm.nid

where psm.state_name='Live'

GROUP BY 1,2
FROM
(
   select DATE_ADD(curdate(), INTERVAL (@i:=@i+1)-1 DAY) as `Date`
   from information_schema.columns,(SELECT @i:=0) gen_sub 
   where (DATE_ADD(curdate(),INTERVAL @i DAY) BETWEEN curdate() AND date_add(curdate(), INTERVAL 1 DAY)) 
) dg
LEFT JOIN
(SELECT


   (pd.nid) as 'NID',
   pd.special_from as 'start',
   pd.special_to as 'end',
   pd.special_weekday as 'Weekday',
   pd.special_weekend as 'Weekend',
   pd.special_weekly as 'Weekly',
   pd.special_minstay as 'Nights'
from 

(SELECT  
n.nid as `nid`,
ifnull(p.special_from,p2.special_from) as `special_from`,
ifnull(p.special_to,p2.special_to) as 'special_to',
ifnull(p.special_weekdayprice,p2.special_weekdayprice) as `special_weekday`,
ifnull(p.special_weekendprice,p2.special_weekendprice) as `special_weekend`,
ifnull(p.special_weeklyprice,p2.special_weeklyprice) as `special_weekly`,
ifnull(p.special_minstay,p2.special_minstay) as `special_minstay`,
n.state_name as `state_name`

FROM 
radb.property_state_machine n 
LEFT JOIN radb.rep_property rep on n.nid=rep.parent
LEFT JOIN radb.rep_property rep1 on n.nid=rep1.nid
LEFT JOIN radb.price_dates p on n.nid=p.nid 
LEFT JOIN radb.price_dates p2 on rep1.parent=p2.nid 
WHERE ( (rep.nid = 0 OR isnull(rep.nid)))) pd 





UNION ALL



SELECT


    (tm.nid) as 'NID',
    tm.book_start as 'start',
    tm.book_end as 'end',
   null,
   null,
   null,
   null

FROM 
(SELECT 
nd2.nid as 'nid',
ifnull(t.book_start,t2.book_start) as `book_start`,
ifnull(t.book_end,t2.book_end) as `book_end`
FROM radb.property_state_machine nd2
LEFT JOIN radb.rep_property rp on nd2.nid=rp.parent
LEFT JOIN radb.rep_property rp1 on nd2.nid=rp1.nid
LEFT JOIN radb.admin_book_temp t on nd2.nid=t.nid 
LEFT JOIN radb.admin_book_temp t2 on rp1.parent=t2.nid where ((rp.nid = 0 OR isnull(rp.nid)))
 ) tm  



) b on ((b.end IS NULL OR date(b.end) >= dg.date)) AND (date(b.start) <= dg.date )
LEFT JOIN
radb.admin_book bl on ((date(bl.book_end) IS NULL OR date(bl.book_end) >= dg.date) and bl.nid=b.nid) AND (date(bl.book_start) <= dg.date AND bl.nid=b.nid)
LEFT JOIN
radb.property_state_machine psm on b.nid=psm.nid

where psm.state_name='Live'

GROUP BY 1,2
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