I am trying to implement an inner join to compare values of two tables, however failing for some reason and the query is returning zero columns.
I have two tables security and security_his and trying to join them on columns SECURITY_ID and INVESTMENT_OBJECTIVE. Query is as follows
SELECT *
FROM SECURITY origin
INNER JOIN (
SELECT *
FROM SECURITY_HIS t2
WHERE DATED = (
SELECT MAX(DATED)
FROM SECURITY_HIS t1
WHERE t1.SECURITY_ID = t2.SECURITY_ID
)
) history ON origin.SECURITY_ID = history.SECURITY_ID
AND origin.INVESTMENT_OBJECTIVE = history.INVESTMENT_OBJECTIVE;
WITH cte as (
SELECT S.*,
row_number() over
(partition by S.SECURITY_ID ORDER BY SH.DATED DESC)
FROM SECURITY S
JOIN SECURITY_HIS SH
ON S.SECURITY_ID = SH.SECURITY_ID
AND S.INVESTMENT_OBJECTIVE = SH.INVESTMENT_OBJECTIVE
)
SELECT *
FROM cte
WHERE rn = 1
You have no GROUP BY on the innermost query, so only a single value, maxed over the entire table, is returned. However your query can also be simplified for easier understanding:
SELECT origin.*, history.Dated
FROM SECURITY origin
INNER JOIN (
SELECT
SECURITY_ID,
INVESTMENT_OBJECTIVE,
MaxDated = MAX(DATED)
FROM SECURITY_HIS t2
GROUP BY
SECURITY_ID,
INVESTMENT_OBJECTIVE
) history ON origin.SECURITY_ID = history.SECURITY_ID
AND origin.INVESTMENT_OBJECTIVE = history.INVESTMENT_OBJECTIVE
Related
I am trying to use the result of the below SQL query-1 such that I can make another JOIN on this with my second query result to retrieve Fundsrc on the common ID - Project.
QUERY 1-
SELECT top 1 with ties
t.project, r.rel_value AS "FundSrc" ,r.date_to
from atsproject t
LEFT OUTER JOIN aglrelvalue r ON(t.client=r.client AND r.rel_attr_id='ZB18' AND r.attribute_id='B0' AND t.project=r.att_value)
WHERE r.date_To > '04/30/2020' and status='n'
ORDER BY row_number() over (partition by t.project order by t.project, r.rel_value)
I cannot put the JOIN inside the above query as it will mess with the result. Instead, if I can do a nesting on this then I think that should solve the issue.
My second query is -
SELECT
t.project,t.work_order as activity, r1.labor_funding_source2_fx AS "Designated Labour Funding"
FROM atsworkorder t
LEFT OUTER JOIN afxactlaborfund r1 ON( t.work_order = r1.dim_value AND t.client = r1.client AND r1.attribute_id = 'BF')
WHERE t.client='PC' and t.status = 'N'
The Output should be -
t.project,t.work_order from query 2 + Fundsrc from Query 1, with the common id on Project ID.
Any suggestions on this is highly appreciated.
You can wrap 'subqueries' in parenthesis and then join them.
Can you try this?:
SELECT *
FROM (
SELECT top 1 with ties t.project,
r.rel_value AS "FundSrc",
r.date_to
FROM atsproject t
LEFT OUTER JOIN aglrelvalue r
ON t.client=r.client
AND r.rel_attr_id='ZB18'
AND r.attribute_id='B0'
AND t.project=r.att_value
WHERE r.date_To > '04/30/2020' and status='n'
ORDER BY row_number() over (partition by t.project order by t.project, r.rel_value)
) AS TABLE_1
LEFT JOIN
(
SELECT t.project,
t.work_order as activity,
r1.labor_funding_source2_fx AS "Designated Labour Funding"
FROM atsworkorder t
LEFT OUTER JOIN afxactlaborfund r1
ON t.work_order = r1.dim_value
AND t.client = r1.client
AND r1.attribute_id = 'BF'
WHERE t.client='PC' and t.status = 'N'
) AS TABLE_2
ON TABLE_1.PROJECT = TABLE2.PROJECT
I am pretty sure an ORDER BY clause will not work within a subquery. Thus, this should probably work:
SELECT *
FROM (
SELECT t.project,
r.rel_value AS "FundSrc",
r.date_to,
row_number() over (partition by t.project order by t.project, r.rel_value) AS MY_RANKING
FROM atsproject t
LEFT OUTER JOIN aglrelvalue r
ON t.client=r.client
AND r.rel_attr_id='ZB18'
AND r.attribute_id='B0'
AND t.project=r.att_value
WHERE r.date_To > '04/30/2020' and status='n'
) AS TABLE_1
LEFT JOIN
(
SELECT t.project,
t.work_order as activity,
r1.labor_funding_source2_fx AS "Designated Labour Funding"
FROM atsworkorder t
LEFT OUTER JOIN afxactlaborfund r1
ON t.work_order = r1.dim_value
AND t.client = r1.client
AND r1.attribute_id = 'BF'
WHERE t.client='PC' and t.status = 'N'
) AS TABLE_2
ON TABLE_1.PROJECT = TABLE2.PROJECT
WHERE TABLE_1.MY_RANKING = 1
Note: On your formatting, wrap words within ` when they refer to code. They will look like this.
Wrap blocks of code within three of those (three at the beginning and at the end). It will look like the blocks of code above.
I have select query :
select
f.FirmaID,f.FirmaAdi,t.BelgeID,t.BelgeTuru,t.Tarih,t2.Plaka,t2.SasiNo,t4.AracMarka,t4.AracTip,case when x.Miktar=1 then 4 else x.miktar end as LastikAdet,
t3.CariKodu,t3.CariAdi,t3.CariGsm1,t3.CariGsm2,t3.CariTel1,t3.CariTel2,t3.CariAdres
from alsatr t WITH (NOLOCK)
left join Firma f WITH (NOLOCK) on f.FirmaID = t.AlsatrFirmaID
left join AracBilgi t2 WITH (NOLOCK) on t2.AracBilgiUID = t.AsAracBilgiUID and t2.AracBilgiID= t.AracBilgi
left join Cari t3 WITH (NOLOCK) on t.AsCariUID= t3.CariUID
left join Araclar t4 WITH (NOLOCK) on t4.AracID= t2.AB_AracID
outer apply
(select COUNT(1) soktak,Miktar FROM alsatD d WITH (NOLOCK)
where
d.AlsatDUID = t.AlsatrUID and d.AsStokKodu='LA-0001' group by Miktar) x
where
isnull(t3.FiloID,0) > 0
and t.Tarih between '04.30.2020' and '04.31.2020'
and t.BelgeTuru=55
and x.soktak > 0
and f.FirmaID not in (1,2,103,106,109,114)
order by t.Tarih desc, f.FirmaID desc, t.BelgeID desc
So I want to select all records between two days but I want to select one,latest record (maybe depends on last BelgeID ) on same day with same plate (plaka).
Enclose your query inside a CTE and use ROW_NUMBER() window function:
WITH cte AS (
<your query here>
)
SELECT
t.FirmaID, t.FirmaAdi, t.BelgeID, t.BelgeTuru, t.Tarih, t.Plaka, t.SasiNo, t.AracMarka,
t.AracTip, t.LastikAdet, t.CariKodu, t.CariAdi, t.CariGsm1, t.CariGsm2, t.CariTel1,
t.CariTel2, t.CariAdres
FROM (
SELECT *, ROW_NUMBER() OVER (PARTITION BY Tarih, Plaka ORDER BY BelgeID DESC) rn
FROM cte
) t
WHERE t.rn = 1
I'm struggling with a left outer join where the right portion, the one that could contain nulls, doesn't show me values. I think the situation is called an implicit inner join. The reason is that the subquery doesn't return nulls but rather nothing for what I'd like to have on my right part.
(This question differs from Left Outer Join Not Working? in that a subquery to find the maximum date is needed.)
Here is a simplified example:
Table Contracts:
customer_id, status
Table Values:
customer_id, value_code, value, begin_date
I want to display all customers with status = 'active' and the latest value for a certain value_code, lets say 'volume'. There are more value_codes and the values have a certain date from which they are valid. There can also be no value_code BUT then I want a NULL on the right side.
So here is what I tried to do:
SELECT * FROM CONTRACTS C
LEFT JOIN VALUES V ON C.CUSTOMER_ID = V.CUSTOMER_ID
AND VALUE_CODE = 'VOLUME'
WHERE C.STATUS = 'ACTIVE'
AND V.BEGIN_DATE = (
SELECT MAX(BEGIN_DATE) FROM VALUES V2
WHERE V2.CUSTOMER_ID = V.CUSTOMER_ID
AND V2.VALUE_CODE = 'VOLUME'
)
I can't put the subquery in the join clause, Oracle won't accept that. On the other hand my subquery makes it so that all the rows that have no entry for a value with code 'volume' are omitted. What I want is to have value = NULL instead with all the customers on the left.
Thanks for helping!
Filter the VALUE rows first and then LEFT JOIN:
SELECT *
FROM CONTRACTS C
LEFT JOIN
( SELECT *
FROM (
SELECT V.*,
ROW_NUMBER() OVER ( PARTITION BY CUSTOMER_ID ORDER BY BEGIN_DATE DESC )
AS rn
FROM VALUES V
)
WHERE rn = 1
) V
ON ( C.CUSTOMER_ID = V.CUSTOMER_ID
AND VALUE_CODE = 'VOLUME' )
WHERE C.STATUS = 'ACTIVE'
As MT0 suggested using partitioning and sorting by row number helped. Only had to include value_code in the partitioning for my purpose.
So this query finally did what I wanted:
SELECT *
FROM CONTRACTS C
LEFT JOIN
( SELECT *
FROM (
SELECT V.*,
ROW_NUMBER() OVER ( PARTITION BY CUSTOMER_ID, VALUE_CODE ORDER BY BEGIN_DATE DESC )
AS rn
FROM VALUES V
)
WHERE rn = 1
) V
ON ( C.CUSTOMER_ID = V.CUSTOMER_ID
AND VALUE_CODE = 'VOLUME' )
WHERE C.STATUS = 'ACTIVE'
I have the following SQL which works - It displays all of the items, along with the MAX starttime.
However, I'd also like to show items that to not have a record in playlistlog - How would one
SELECT items.idx, items.title, items.artist, playlistlog.starttime
FROM items
LEFT JOIN playlistlog ON playlistlog.item = items.idx
WHERE playlistlog.starttime = (
SELECT MAX(starttime)
FROM playlistlog AS pl2
WHERE pl2.item = items.idx
)
The where clause is turning your left join into an inner join.
Use AND instead of WHERE.
SELECT items.idx, items.title, items.artist, playlistlog.starttime
FROM items
LEFT JOIN playlistlog ON playlistlog.item = items.idx
and playlistlog.starttime = (
SELECT MAX(starttime)
FROM playlistlog AS pl2
WHERE pl2.item = items.idx
)
This can be done a bit shorter using standard SQL's window function:
SELECT items.idx, items.title, items.artist, pl.starttime
FROM items
LEFT JOIN (
select item,
starttime,
row_number() over (partition by item order by starttime desc) as rn
from playlistlog
) pl ON pl.item = items.idx AND pl.rn = 1
I hope you might be able to help. I'm a novice at SQL so this one is starting to bug me.
Currently I am collecting data every day for a Meter Name. This data is currently being logged in a table with the columns TimeStamp, Name, Value. However I would like to create a query which will only return the most recent (last) value recorded against each Name in the table.
I've built this query so far but the Top 1 syntax doesn't seem to be what I need.
SELECT Top 1 (DataLog.Timestamp), MeterTags.Name, DataLog.Value
FROM Meters
INNER JOIN MeterTags
ON Meters.MeterId = MeterTags.MeterId
INNER JOIN DataLog
ON MeterTags.MeterTagId = DataLog.MeterTagId
WHERE Meters.MeterTypeId = 8
GROUP By MeterTags.Name, DataLog.Timestamp
Any advice you could give would be appreciated.
Thanks in advance.
You can use ROW_NUMBER to give each record a rownumber (resetting to 0 for each MeterTags.Name) then just select the first for each name:
WITH CTE AS
( SELECT DataLog.Timestamp,
MeterTags.Name,
DataLog.Value,
RowNumber = ROW_NUMBER() OVER(PARTITION BY MeterTags.Name
ORDER BY DataLog.TimeStamp DESC)
FROM Meters
INNER JOIN MeterTags
ON Meters.MeterId = MeterTags.MeterId
INNER JOIN DataLog
ON MeterTags.MeterTagId = DataLog.MeterTagId
WHERE Meters.MeterTypeId = 8
)
SELECT CTE.Timestamp,
CTE.Name,
CTE.Value
FROM CTE
WHERE CTE.RowNumber = 1;
Another solution is to use the TOP 1 inside an APPLY:
SELECT DataLog.Timestamp,
MeterTags.Name,
DataLog.Value
FROM Meters
INNER JOIN MeterTags
ON Meters.MeterId = MeterTags.MeterId
CROSS APPLY
( SELECT TOP 1 TimeStamp, Value
FROM DataLog
WHERE MeterTags.MeterTagId = DataLog.MeterTagId
ORDER BY TimeStamp DESC
) DataLog
WHERE Meters.MeterTypeId = 8;
Try below query
select Timestamp,Name,Value
from
(
SELECT (DataLog.Timestamp), MeterTags.Name, DataLog.Value,rownum,ROW_NUMBER() OVER
(PARTITION BY MeterTags.Name ORDER BY DataLog.Timestamp desc) AS rownum FROM Meters
INNER JOIN MeterTags
ON Meters.MeterId = MeterTags.MeterId
INNER JOIN DataLog
ON MeterTags.MeterTagId = DataLog.MeterTagId
)data
where rownum=1