I want to generate Yearmonth (YYYYMM) for each quarters between two years and associate a rank number for each line.
Date_Begin
Date_End
2021
2023
I retrieve a yearmonthrank as below:
SELECT GENERATE_ARRAY(1,((Date_End-Date_Begin )*4)) as period_rank
...
UNNEST(period_rank) AS period_yearmonthrank
Which returns:
period_rank
1
2
...
12
Now, I have no idea how I could generate this output for yearmonth part?
period_rank
yearmonth
1
202103
2
202106
3
202109
4
202112
5
202203
6
202206
7
202209
8
202212
9
202303
10
202306
11
202309
12
202312
Thank you for your time!
Try this one:
SELECT RANK() OVER (ORDER BY y, q) AS period_rank,
FORMAT('%d%02d', y, q) AS yearmonth,
FROM UNNEST(GENERATE_ARRAY(2021, 2023)) y, UNNEST([3, 6, 9, 12]) q
;
output:
Related
I have a complex situation in PostgreSQL 11 where i need to generate a numbering based on a single figure which i get it from a CTE.
Below is the CTE
WITH pending_orders_to_be_processed_details
AS
(
SELECT ROW_NUMBER() OVER(ORDER BY so.create_date ) as queue_no
, name,so.create_date ::TIMESTAMP
FROM picking sp
LEFT JOIN order so ON so.name=sp.origin
WHERE sp.state IN('assigned','confirmed')
)
,orders_which_can_be_processed_today AS
(
-- This CTE will give me a count of orders
and its hourly average, Lets say count is 400 and hourly avg is 3
)
Now i need to number the details according to the hourly average, Means the first 3 orders need to be ranked as 1, next 3 to be ranked as 2 and so on, so that i can able to identify that these can be processed based on this ranking.
Input will be
name queu_number. create_date
so1 1 2021-03-11 12:00:00
so2 2 2021-03-11 13:00:00
so3 3 2021-03-11 14:00:00
so4 4 2021-03-11 15:00:00
so5 5 2021-03-11 16:00:00
so6 6 2021-03-11 17:00:00
so7 7 2021-03-11 18:00:00
so8 8 2021-03-11 19:00:00
so9 9 2021-03-11 20:00:00
The expected output will be
name rank
so1 1
so2 1
so3 1
so4 2
so5 2
so6 2
so7 3
so8 3
so9 3
Any help/suggestions.
Edit: I recently learned about a function, which fits well here:
demo:db<>fiddle
You can use the ntile() window function for that:
SELECT
*,
ntile(3) OVER (ORDER BY create_date)
FROM mytable
demo:db<>fiddle
Since you already created a cumulative row count, you can use this to create your expected rank:
SELECT
*,
floor((queue_no - 1) / 3) + 1 as rank
FROM my_cte
queue_no - 1 (so, 1 to 3 will be shifted to 0 to 2)
Diff by 3: so, 0 to 2 will be 0.x and 3 to 5 will be 1.x, ...
Now round these result to 0, 1, 2, ...
If you want to start with 1 instead of 0, add 1
Is there anyway i can group the results by month and by type? With the query below i managed to group by month but the "type" is not grouping.
query:
select date_trunc('month',processingdate),type,sum(itemcount), sum(itemamount)
from test
where date_trunc('month',processingdate) >= now() - interval '1 month'
group by type,date_trunc('month',processingdate)
order by processingdate
Data in table:
date_trunc type sum sum
1/1/20 11 5 1
1/2/20 12 3 2
1/3/20 11 2 3
1/4/20 12 3 5
Expected Results:
date_trunc type sum sum
1/1/2020 11 7 4
1/1/2020 12 6 7
Hi I have a scenario to add a all previous values ...
Input is this of a column of a table
Col
3
5
4
6
9
7
8
And I need output in this manner:
Col Col2
3 3
5 8
4 12
6 18
9 27
7 34
8 42
Kindly reply asap
Regards,
Neeraj
As long as you have a field to order by, you can use SUM ... OVER to do the running sum;
SELECT Col, SUM(Col) OVER (ORDER BY id) Col2
FROM Table1
ORDER BY id;
An SQLfiddle to test with.
Currently i have a requirement which needs a table to look like this:
Instrument Long Short 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 ....
Fixed 41 41 35 35 35 35 35 35 35 53 25 25
Index 16 16 22 22 22 32 12 12 12 12 12 12
Credits 29 29 41 16 16 16 16 16 16 16 16 16
Short term 12 12 5 5 5 5 5 5 5 5 5 17
My worktable looks like the following:
Instrument Long Short Annual Coupon Maturity Date Instrument ID
Fixed 10 10 10 01/01/2025 1
Index 5 5 10 10/05/2016 2
Credits 15 15 16 25/06/2020 3
Short term 12 12 5 31/10/2022 4
Fixed 13 13 15 31/03/2030 5
Fixed 18 18 10 31/01/2019 6
Credits 14 14 11 31/12/2013 7
Index 11 11 12 31/10/2040 8
..... etc
So basically the long and the short in the pivot should be the sum of each distinct instrument ID. And then for each year i need to take the sum of each Annual Coupon until the maturity date year where the long and the coupon rate are added together.
My thinking was that i had to create a while loop which would populate a table with a record for each year for each instrument until the maturity date, so that i could then pivot using an sql pivot some how. Does this seem feasible? Any other ideas on the best way of doing this, particularly i might need help on the while loop?
The following solution uses a numbers table to unfold ranges in your table, performs some special processing on some of the data columns in the unfolded set, and finally pivots the results:
WITH unfolded AS (
SELECT
t.Instrument,
Long = SUM(z.Long ) OVER (PARTITION BY Instrument),
Short = SUM(z.Short) OVER (PARTITION BY Instrument),
Year = y.Number,
YearValue = t.AnnualCoupon + z.Long + z.Short
FROM YourTable t
CROSS APPLY (SELECT YEAR(t.MaturityDate)) x (Year)
INNER JOIN numbers y ON y.Number BETWEEN YEAR(GETDATE()) AND x.Year
CROSS APPLY (
SELECT
Long = CASE y.Number WHEN x.Year THEN t.Long ELSE 0 END,
Short = CASE y.Number WHEN x.Year THEN t.Short ELSE 0 END
) z (Long, Short)
),
pivoted AS (
SELECT *
FROM unfolded
PIVOT (
SUM(YearValue) FOR Year IN ([2013], [2014], [2015], [2016], [2017], [2018], [2019], [2020],
[2021], [2022], [2023], [2024], [2025], [2026], [2027], [2028], [2029], [2030],
[2031], [2032], [2033], [2034], [2035], [2036], [2037], [2038], [2039], [2040])
) p
)
SELECT *
FROM pivoted
;
It returns results for a static range years. To use it for a dynamically calculated year range, you'll first need to prepare the list of years as a CSV string, something like this:
SET #columnlist = STUFF(
(
SELECT ', [' + CAST(Number) + ']'
FROM numbers
WHERE Number BETWEEN YEAR(GETDATE())
AND (SELECT YEAR(MAX(MaturityDate)) FROM YourTable)
ORDER BY Number
FOR XML PATH ('')
),
1, 2, ''
);
then put it into the dynamic SQL version of the query:
SET #sql = N'
WITH unfolded AS (
...
PIVOT (
SUM(YearValue) FOR Year IN (' + #columnlist + ')
) p
)
SELECT *
FROM pivoted;
';
and execute the result:
EXECUTE(#sql);
You can try this solution at SQL Fiddle.
This question already has answers here:
Closed 10 years ago.
Possible Duplicate:
Calculate a Running Total in SqlServer
I need to use values from previous row inorder to generate a cumulative value as shown below. Always for each Code for the year 2000 the starting Base is 100.
I need to ahieve this using tsql code.
id Code Yr Rate Base
1 4 2000 5 100
2 4 2001 7 107 (100+7)
3 4 2002 4 111 (107+4)
4 4 2003 8 119 (111+8)
5 4 2004 10 129 (119+10)
6 5 2000 2 100
7 5 2001 3 103 (100+3)
8 5 2002 8 111 (103+8)
9 5 2003 5 116 (111+5)
10 5 2004 4 120 (116+4)
OK. We have table like this
CREATE Table MyTbl(id INT PRIMARY KEY IDENTITY(1,1), Code INT, Yr INT, Rate INT)
And we would like to calculate cumulative value by Code.
So we can use query like this:
1) recursion (requires more resources, but outputs the result as in the example)
with cte as
(SELECT *, ROW_NUMBER()OVER(PARTITION BY Code ORDER BY Yr ASC) rn
FROM MyTbl),
recursion as
(SELECT id,Code,Yr,Rate,rn, CAST(NULL as int) as Tmp_base, CAST('100' as varchar(25)) AS Base FROM cte
WHERE rn=1
UNION ALL
SELECT cte.id,cte.Code,cte.Yr,cte.Rate,cte.rn,
CAST(recursion.Base as int),
CAST(recursion.Base+cte.Rate as varchar(25))
FROM recursion JOIN cte ON recursion.Code=cte.Code AND recursion.rn+1=cte.rn
)
SELECT id,Code,Yr,Rate,
CAST(Base as varchar(10))+ISNULL(' ('+ CAST(Tmp_base as varchar(10))+'+'+CAST(Rate as varchar(10))+')','') AS Base
FROM recursion
ORDER BY 1
OPTION(MAXRECURSION 0)
2) or we can use a faster query without using recursion. but the result is impossible to generate the strings like '107 (100+7)' (only strings like '107')
SELECT *,
100 +
(SELECT ISNULL(SUM(rate),0) /*we need to calculate only the sum in subquery*/
FROM MyTbl AS a
WHERE
a.Code=b.Code /*the year in subquery equals the year in main query*/
AND a.Yr<b.Yr /*main feature in our subquery*/
) AS base
FROM MyTbl AS b