How I can put name on subquery's output, instead of ?column??
The SELECT's output is:
._______.__________.__________.
|__id___|_?column?_|_?column?_|
|_31886_|____12____|____13____|
What I want is:
._______.__________.__________.
|__id___|___ages___|_validate_|
|_31886_|____12____|____13____|
What my SELECT look like:
SELECT g.id,
(select dt from pcdhidro where nomepcd=31886 order by datahora asc limit 1),
(select dt from pcdhidro_2003_96 where nomepcd=31886)
FROM gestpcd_2 g
WHERE g.tipo = 'HIDRO' and g.id = 31886
(Select X from Y) AS alias
So in your case:
SELECT g.id,
(select dt from pcdhidro where nomepcd=31886 order by datahora asc limit 1) as ages,
(select dt from pcdhidro_2003_96 where nomepcd=31886) as validate
FROM gestpcd_2 g
WHERE g.tipo = 'HIDRO' and g.id = 31886
Related
I have a table table1. with columns sn, rt and type
I want to get rows with different rt (i.e rt = 1,2,3) column conditions
(SELECT *
FROM table1
WHERE sn = 'testing' AND rt = 1 AND type = 'pump'
ORDER BY id DESC
LIMIT 1)
UNION
(SELECT *
FROM table1
WHERE sn = 'testing' AND rt = 2 AND type = 'pump'
ORDER BY id DESC
LIMIT 1)
UNION
(SELECT *
FROM table1
WHERE sn = 'testing' AND rt = 3 AND type = 'pump'
ORDER BY id DESC
LIMIT 1)
Currently i am trying the above.
Which is the effective way to get the rows
Use ROW_NUMBER() window function:
SELECT t.*
FROM (
SELECT *, ROW_NUMBER() OVER (PARTITION BY rt ORDER BY id DESC) rn
FROM table1
WHERE sn = 'testing' AND type = 'pump' AND rt IN (1, 2, 3)
) t
WHERE t.rn = 1
You can omit AND rt IN (1, 2, 3) if 1, 2 and 3 are the only possible values for rt.
You'll want to do JOINs between the table and itself, then specify the conditions in the singular WHERE clause. I've done a rough sketch of it below:
SELECT t1.*, t2.*, t3.*
FROM table1 AS t1
JOIN table1 AS t2
ON t1.sn = t2.sn AND t1.type = t2.type -- If you've got more reasonable connections between your datapoints, use them here
JOIN table1 AS t3
ON t.sn = t3.sn AND t1.type = t3.type
WHERE t1.rt = 1 AND t2.rt = 2 AND t3.rt = 3
ORDER BY t1.id DESC
LIMIT 1
Depending on what other requirements you have, you may have to tweak some parts of that. If you want results when t1 has a value but t2 or t3 doesn't you can use a LEFT JOIN instead.
Name Value AnotherColumn
-----------
Pump 1 8000.0 Something1
Pump 1 10000.0 Something2
Pump 1 10000.0 Something3
Pump 2 3043 Something4
Pump 2 4594 Something5
Pump 2 6165 Something6
My table looks something like this. I would like to know how to select max value for each pump.
select a.name, value from out_pumptable as a,
(select name, max(value) as value from out_pumptable where group by posnumber)g where and g.value = value
this code does the job, but i get two entries of Pump 1 since it has two entries with same value.
select name, max(value)
from out_pumptable
group by name
select name, value
from( select name, value, ROW_NUMBER() OVER(PARTITION BY name ORDER BY value desc) as rn
from out_pumptable ) as a
where rn = 1
SELECT
b.name,
MAX(b.value) as MaxValue,
MAX(b.Anothercolumn) as AnotherColumn
FROM out_pumptabl
INNER JOIN (SELECT
name,
MAX(value) as MaxValue
FROM out_pumptabl
GROUP BY Name) a ON
a.name = b.name AND a.maxValue = b.value
GROUP BY b.Name
Note this would be far easier if you had a primary key. Here is an Example
SELECT * FROM out_pumptabl c
WHERE PK in
(SELECT
MAX(PK) as MaxPK
FROM out_pumptabl b
INNER JOIN (SELECT
name,
MAX(value) as MaxValue
FROM out_pumptabl
GROUP BY Name) a ON
a.name = b.name AND a.maxValue = b.value)
select Name, Value, AnotherColumn
from out_pumptable
where Value =
(
select Max(Value)
from out_pumptable as f where f.Name=out_pumptable.Name
)
group by Name, Value, AnotherColumn
Try like this, It works.
select * from (select * from table order by value desc limit 999999999) v group by v.name
Using analytic function is the easy way to find max value of every group.
Documentation : https://learn.microsoft.com/en-us/sql/t-sql/functions/row-number-transact-sql?view=sql-server-ver15
Select name,
value,
AnotherColumn
From(
SELECT Row_Number() over(partition by name order by value desc)as
row_number, *
FROM students
)
Where row_number = 1
SELECT t1.name, t1.Value, t1.AnotherColumn
FROM mytable t1
JOIN (SELECT name AS nameMax, MAX(Value) as valueMax
FROM mytable
GROUP BY name) AS t2
ON t2.nameMax = t1.name AND t2.valueMax = t1.Value
WHERE 1 OR <anything you would like>
GROUP BY t1.name;
SELECT DISTINCT (t1.ProdId), t1.Quantity FROM Dummy t1 INNER JOIN
(SELECT ProdId, MAX(Quantity) as MaxQuantity FROM Dummy GROUP BY ProdId) t2
ON t1.ProdId = t2.ProdId
AND t1.Quantity = t2.MaxQuantity
ORDER BY t1.ProdId
this will give you the idea.
Say I want to select the posts that has certain tags or matches the keyword.
select t1.*
from (
select p.*, count(p.id) from plainto_tsquery('hElLo') AS q , post p
left join post_tag pt on pt.post_id = p.id
left join tag t on t.id = pt.tag_id
WHERE (tsv ## q) or t.id in (2,3)
group by p.id
) as t1
order by count desc, ts_rank_cd(t1.tsv, plainto_tsquery('hElLo')) desc
limit 5;
the above does select what I want. In tsv, I gave title A weight and description D weight. it now becomes pretty pointless when sorting by count because each entry has the same weight. Is it possible to do things like if this row is picked from t.id in (2,3), they get to sorted to the first, then sort by ts_rank_cd, or give each match tag 'A' weight, title become B weight and description is D?
Try CASE WHEN
select t1.*
from (
select p.*, count(p.id),
(CASE WHEN t.id in (2,3) THEN 1 ELSE 2 END) as ranking
from plainto_tsquery('hElLo') AS q , post p
left join post_tag pt on pt.post_id = p.id
left join tag t on t.id = pt.tag_id
WHERE (tsv ## q) or t.id in (2,3)
group by p.id
) as t1
order by count desc, ranking asc, ts_rank_cd(t1.tsv, plainto_tsquery('hElLo')) desc
limit 5;
Edited(Correct Answer):
select t1.*
from (
select p.*, count(p.id),
COUNT(1) filter(where t.id in (2,3)) ranking
from plainto_tsquery('hElLo') AS q , post p
left join post_tag pt on pt.post_id = p.id
left join tag t on t.id = pt.tag_id
WHERE (tsv ## q) or t.id in (2,3)
group by p.id
) as t1
order by count desc, ranking asc, ts_rank_cd(t1.tsv, plainto_tsquery('hElLo')) desc
limit 5;
I'm not sure why the count would be the same, but you can add more keys to the order by:
order by count desc,
(t.id in (2, 3)) desc,
ts_rank_cd(t1.tsv, plainto_tsquery('hElLo')) desc ;
The desc is because true > false, and you want the true values to be first.
In this query I cant understand what would be the proper syntax to PIVOT it by month and also display just top 10 records based on SUM(NetWrittenPremium).
;with cte_TopClasses
AS (
select
b.YearNum,
b.MonthNum,
REPLACE(ClassCode,'+','') + ' - '+ QLL.Description as Description,
SUM( Premium) as NetWrittenPremium
FROM tblCalendar b
LEFT JOIN ProductionReportMetrics prm ON b.MonthNum=Month(prm.EffectiveDate) AND b.YearNum = YEAR(EffectiveDate)
AND prm.EffectiveDate >=DateAdd(yy, -1, DATEADD(d, 1, EOMONTH(GETDATE()))) AND prm.EffectiveDate <= EOMONTH(GETDATE()) AND CompanyLine = 'Ironshore Insurance Company'
LEFT JOIN NetRate_Quote_Insur_Quote Q ON prm.NetRate_QuoteID = Q.QuoteID
LEFT JOIN NetRate_Quote_Insur_Quote_Locat QL ON Q.QuoteID = QL.QuoteID
LEFT JOIN (SELECT * FROM NetRate_Quote_Insur_Quote_Locat_Liabi nqI
JOIN ( SELECT LocationID as LocID, MAX(ClassCode) as ClCode
FROM NetRate_Quote_Insur_Quote_Locat_Liabi GROUP BY LocationID ) nqA
ON nqA.LocID = nqI.LocationID AND nqA.ClCode = nqI.ClassCode ) QLL
ON QLL.LocationID = QL.LocationID
WHERE ( b.YearNum = YEAR(GETDATE())-1 and b.MonthNum >= MONTH(GETDATE())+1 ) OR
( b.YearNum = YEAR(GETDATE()) and b.MonthNum <= MONTH(GETDATE()) )
GROUP BY b.YearNum,b.MonthNum,ClassCode, QLL.Description
)
SELECT
--TOP 10
RANK() OVER (ORDER BY NetWrittenPremium DESC) AS Rank, *
FROM cte_TopClasses
WHERE Description IS NOT NULL
ORDER BY NetWrittenPremium DESC,YearNum,MonthNum
The result should look something like that:
If I use the query below and then using matrics in SSRS to PIVOT it - then after grouping by Description it only displays me 2 Description.
;with cte_TopClasses
AS (
select
b.YearNum,
b.MonthNum,
REPLACE(ClassCode,'+','') + ' - '+ QLL.Description as Description,
SUM( Premium) as NetWrittenPremium
FROM tblCalendar b
LEFT JOIN ProductionReportMetrics prm ON b.MonthNum=Month(prm.EffectiveDate) AND b.YearNum = YEAR(EffectiveDate)
AND prm.EffectiveDate >=DateAdd(yy, -1, DATEADD(d, 1, EOMONTH(GETDATE()))) AND prm.EffectiveDate <= EOMONTH(GETDATE()) AND CompanyLine = 'Ironshore Insurance Company'
LEFT JOIN NetRate_Quote_Insur_Quote Q ON prm.NetRate_QuoteID = Q.QuoteID
LEFT JOIN NetRate_Quote_Insur_Quote_Locat QL ON Q.QuoteID = QL.QuoteID
LEFT JOIN (SELECT * FROM NetRate_Quote_Insur_Quote_Locat_Liabi nqI
JOIN ( SELECT LocationID as LocID, MAX(ClassCode) as ClCode
FROM NetRate_Quote_Insur_Quote_Locat_Liabi GROUP BY LocationID ) nqA
ON nqA.LocID = nqI.LocationID AND nqA.ClCode = nqI.ClassCode ) QLL
ON QLL.LocationID = QL.LocationID
WHERE ( b.YearNum = YEAR(GETDATE())-1 and b.MonthNum >= MONTH(GETDATE())+1 ) OR
( b.YearNum = YEAR(GETDATE()) and b.MonthNum <= MONTH(GETDATE()) )
GROUP BY b.YearNum,b.MonthNum,ClassCode, QLL.Description
)
SELECT *
FROM (SELECT RANK() OVER (ORDER BY NetWrittenPremium DESC) AS Rank, *
FROM cte_TopClasses
WHERE Description IS NOT NULL) AA
WHERE AA.Rank <= 10
ORDER BY AA.NetWrittenPremium DESC, AA.YearNum, AA.MonthNum
And the result of it in SSRS matrics :
You could try something like this at the end of the query, rather than what is there now:
SELECT *
FROM (SELECT RANK() OVER (ORDER BY [Description] DESC) AS Rank, *
FROM cte_TopClasses
WHERE Description IN (SELECT [Description]
FROM (SELECT RANK() OVER (ORDER BY SUM(NetWrittenPremium) DESC) AS [Rank], [Description], SUM(NetWrittenPremium) AS total
FROM cte_TopClasses
WHERE [Description] IS NOT NULL
GROUP BY [Description]) BB
WHERE [Rank] <= 10)) AA
ORDER BY YearNum, MonthNum
This wraps the query in a SELECT, and filters the ranked results to the 10 you want.
Then use a matrix in the report to pivot the results.
Suppose I've a table like this:
NAME REF1 REF2 DRCT
A (null) Ra D1
A Rb (null) D1
A (null) Rc D2
B Rd (null) D3
B (null) Re D3
I want aggregate this table in something like:
NAME REF1 REF2 DRCT
A Rb Ra D1
A (null) Rc D2
B Rd Re D3
As you can see, i want aggregate each row with same name. I've search through COALESCE and various aggregate functions but I haven't found what i was looking for. Any idea?
Assuming that what I ask in my previous comment is true, (only null or a given value for REF1 and REF2 for each NAME, DRCT pair), this seems to work:
select NAME, M_REF1, M_REF2, DRCT
from (
select A.NAME, coalesce(A.REF1, B.REF1) m_REF1,
coalesce(A.REF2, B.REF2) m_REF2, A.REF1 A_REF1, B.REF1 B_REF1,
A.REF2 A_REF2, B.REF2 B_REF2, A.DRCT
from Table1 A JOIN Table1 B on A.NAME = B.NAME AND A.DRCT = B.DRCT)
WHERE A_REF1 = m_REF1 AND B_REF2 = m_REF2
UNION
select A.NAME, A.REF1, A.REF2, A.DRCT
FROM Table1 A JOIN
(select NAME, DRCT, COUNT(*)
from Table1
group by NAME, DRCT
HAVING COUNT(*) = 1) B ON A.NAME = B.NAME AND A.DRCT = B.DRCT;
The union is used because the rows with only one record are not included in the first SELECT.
But this is somewhat simpler, and works too:
select A.NAME, coalesce(A.REF1, B.REF1) M_REF1, coalesce(A.REF2,B.REF2) M_REF2,A.DRCT
from Table1 A LEFT OUTER JOIN Table1 B ON A.DRCT = B.DRCT AND A.NAME = B.NAME
WHERE NVL2(A.REF1,0,1) = 1 AND NVL2(B.REF1,0,1) =0
AND NVL2(A.REF2,0,1) = 0 AND NVL2(B.REF2,0,1) = 1
UNION
select A.NAME, A.REF1, A.REF2, A.DRCT
FROM Table1 A JOIN
(select NAME, DRCT, COUNT(*)
from Table1
group by NAME, DRCT
HAVING COUNT(*) = 1) B ON A.NAME = B.NAME AND A.DRCT = B.DRCT;