I have a question on SQL 2008 which is probably quite easy but I can't see the woods for the trees now.
I am trying to produce a sql based report detailing the last six months of helpdesk issue stats, per application, per office, per month which I then take into ssrs to apply prettiness :o)
Anyway - I have my script, which is fine on a month by month basis, for example;
SELECT distinct t.name_1 'Application',
(select distinct name from location where location_ref = c.location_ref) as office,
Count (t.name_1) as [Call Count],
datename(month, dateadd(month,-2,getdate()))+' '+datename(year, dateadd(month,-2,getdate())) as [Report Month]
FROM call_logging C
Inner Join problem_type t On t.ref_composite = c.ref_composite
AND c.resolve_time between onvert(datetime,convert(varchar,month(dateadd(m,-2,getdate()))) + '/01/' + convert(varchar,year(dateadd(m,-2,getdate()))))
and convert(datetime,convert(varchar,month(dateadd(m,-1,getdate()))) + '/01/' + convert(varchar,year(getdate())))
and c.resolve_group in ('48', '60')
which brings back all of May's issues.
The problem is that t.name_1 (the application in which the issue is for) is dynamic and the list grows or shrinks every month.
I basically need a layout of
APPLICATION OFFICE COUNT JUNE MAY APRIL MARCH FEB JAN
WORD LONDON 20 1 1 2 5 10 1
WORD PARIS 10 2 3 1 2 0 3
EXCEL MADRID 05 0 0 3 2 0 0
etc (if that makes sense on this layout!)
I've gone down the 6 separate reports road but it just doesn't look very nice in ssrs. I've thought about #tmptables but they don't like inserting distinct rows.
SELECT [C].[name_1] AS [APPLICATION]
,COUNT([name_1]) AS [CALL COUNT]
,[l].[location_ref]
,[dbo].[ufn_GetDateTime_CalenderYearMonth]([resolve_time]) AS [StartCalenderYearMonth]
FROM [call_logging] [C] INNER JOIN [problem_type] [t]
ON [t].[ref_composite] = [c].[ref_composite]
AND [c].[resolve_group] IN ('48', '60')
INNER JOIN [location] [l] ON [c].[location_ref] = [l].[location_ref]
WHERE [C].[resolve_time] BETWEEN '2011-01-01' AND GETDATE()
GROUP BY [C].[name_1], [l].[location_ref], [dbo].[ufn_GetDateTime_CalenderYearMonth]([resolve_time])
And the code for ufn_GetDateTime_CalenderYearMonth is:
CREATE FUNCTION [dbo].[ufn_GetDateTime_CalenderYearMonth] (#DateTime datetime)
RETURNS varchar(20)
AS
BEGIN
declare #dateString varchar(20)
declare #yearString varchar(10)
declare #monthString varchar(10)
set #yearString = cast( DATEPART(year, #DateTime) as varchar(10))
if(DATEPART(month, #DateTime) < 10)
set #monthString = '0' + cast( DATEPART(month, #DateTime) as varchar(5) )
else
set #monthString = cast( DATEPART(month, #DateTime) as varchar(5) )
set #dateString = #yearString + '-' + #monthString
RETURN (#dateString)
END
You just slap the resultset in a matrix and group everything by [StartCalenderYearMonth] and it will show numbers for each month from 1st of Jan 2011 till now..
Related
I am running an analysis on medication prescribing practices. We want to identify whether someone has been on a class of medications for 60 days out of a 90 day quarter. We have a start and end date for each prescription, and the bounds of the quarter (e.g., 4/1/2022 – 6/30/2022). For each prescription I’ve calculated the number of days between the start and end date (only including days that fall within the bounds of the quarter). There are many instances in which multiple drugs within the same class are prescribed someone might try one antidepressant but not like it, so be given another in the same class.
My original strategy was just to total up number of days for each class of medication and see if it’s 60 or over. The days don’t have to be consecutive, but if they overlap, days during an overlap period shouldn’t count twice (which they would in a simple sum).
For instance in the data table below, patient 1 in row 1 should be included as they are over 60 days. Patient 2 should also get in (rows 2 and 3) because the non-overlapping total (57+8) within the same med class gets them to over 60 days. However, patient 3 should NOT get in, even though the total of 32 + 32 is over 60 because the intervals overlap. This means that they were really on the medication class for only 32 days – this is an instance where someone might be on two different antidepressants simultaneously.
It’s not sufficient to just sum the days in the interval, but I also have to include some way to examine whether the intervals are overlapping and only add days if an interval for a given medication class falls outside another interval for that same class.
Row num Patid Med class Start date End date Interval
1 1 A 2022-04-28 2022-09-12 63
2 2 B 2022-05-03 2022-06-29 57
3 2 B 2022-04-21 2022-04-29 8
4 3 A 2022-01-19 2022-05-03 32
5 3 A 2022-01-19 2022-05-03 32
I’m having a hard time figuring out how to do this. Note, I'm limited to just using SQL for this.
Code that produced the above data. I would embed this in another query to generate a total interval but need to deal with the overlap issue.
DECLARE #startdt DATE;
DECLARE #enddt DATE;
SET #startdt='4/1/2022'
SET #enddt='6/30/2022'
--for q4 fy2022-23 (4/1/2022-6/30/2022)`
SELECT DISTINCT
rx.patid, d.medication_category as medcat, start_date, end_date,
-- case statement to capture days within quarter only
CASE WHEN start_date<#startdt and end_date>#enddt then 90
WHEN start_date<#startdt and end_date>=#startdt then datediff(d,#startdt,end_date)
WHEN start_date>=#startdt and end_date>#enddt then datediff(d,start_date,#enddt)
ELSE datediff(d,start_date,end_date)
END as interval
FROM rx
INNER JOIN Drug_names_categories d
ON rx.drugname=d.drugname
WHERE start_date<'7/1/2022' and end_date>'3/30/2022'
AND rx.patid IS NOT NULL
AND d.medication_category IS NOT NULL
AND d.medication_category <>''
You can accomplish what you want by generating a calendar table (using a Common Table Expression) of individual days within the test range, joining those days with the prescriptions with overlapping days, and then counting distinct days for each patient and medication category combination.
Something like:
DECLARE #startdt DATE = '2022-04-01';
DECLARE #enddt DATE = '2022-06-30';
DECLARE #threshold INT = 60;
WITH Days AS (
SELECT #startdt AS Day
UNION ALL
SELECT DATEADD(day, 1, Day)
FROM Days
WHERE Day < #enddt
)
SELECT
rx.patid, d.medication_category as medcat,
COUNT(DISTINCT DD.Day) AS days_medicated,
MIN(DD.Day) AS start_date,
MAX(DD.Day) AS end_date
FROM rx
INNER JOIN Drug_names_categories d
ON rx.drugname = d.drugname
INNER JOIN Days DD
ON DD.Day BETWEEN rx.start_date AND rx.end_date
WHERE rx.start_date <= #enddt AND #startdt <= rx.end_date
GROUP BY rx.patid, d.medication_category
HAVING COUNT(DISTINCT DD.Day) >= #threshold
ORDER BY rx.patid, start_date;
If using SQL Server 2022 or later, the Days generator can be simplified by using the new GENERATE_SERIES() function:
WITH Days AS (
SELECT DATEADD(day, S.value, #startdt) AS Day
FROM GENERATE_SERIES(0, DATEDIFF(day, #Startdt, #enddt)) S
)
See this db<>fiddle for an example with some sample data.
I would do this using a date/calendar table, then it's pretty easy.
If you don't already have a date table, this link is one of many that describe how to create one easily ( https://www.mssqltips.com/sqlservertip/4054/creating-a-date-dimension-or-calendar-table-in-sql-server/ )
Here's the script from this link (in case the link dies)
DECLARE #StartDate date = '20100101';
DECLARE #CutoffDate date = DATEADD(DAY, -1, DATEADD(YEAR, 30, #StartDate));
;WITH seq(n) AS
(
SELECT 0 UNION ALL SELECT n + 1 FROM seq
WHERE n < DATEDIFF(DAY, #StartDate, #CutoffDate)
),
d(d) AS
(
SELECT DATEADD(DAY, n, #StartDate) FROM seq
),
src AS
(
SELECT
TheDate = CONVERT(date, d),
TheDay = DATEPART(DAY, d),
TheDayName = DATENAME(WEEKDAY, d),
TheWeek = DATEPART(WEEK, d),
TheISOWeek = DATEPART(ISO_WEEK, d),
TheDayOfWeek = DATEPART(WEEKDAY, d),
TheMonth = DATEPART(MONTH, d),
TheMonthName = DATENAME(MONTH, d),
TheQuarter = DATEPART(Quarter, d),
TheYear = DATEPART(YEAR, d),
TheFirstOfMonth = DATEFROMPARTS(YEAR(d), MONTH(d), 1),
TheLastOfYear = DATEFROMPARTS(YEAR(d), 12, 31),
TheDayOfYear = DATEPART(DAYOFYEAR, d)
FROM d
)
SELECT *
INTO MyDateTable
FROM src
ORDER BY TheDate
OPTION (MAXRECURSION 0);
No that you have your new date table you can join to it to get the list of dates that are within the start and end date, something like
SELECT DISTINCT COUNT(TheDate)
FROM rx
INNER JOIN MyDateTable dt on dt BETWEEN rx.start_date AND rx.end_date
INNER JOIN Drug_names_categories d ON rx.drugname=d.drugname
WHERE start_date<'7/1/2022' and end_date>'3/30/2022'
AND rx.patid IS NOT NULL
AND d.medication_category IS NOT NULL
AND d.medication_category <>''
Obviously this is simple example but you could extend this easily to include all the details you need, the point is that you now have a list of dates or distinct list of dates which you can work with easily.
You could also simply the date range applied by referencing the TheQuarter and TheYear columns. If this is a common task consider extending the date table to contain a comound YearQurater columns (e.g. 2023Q1/202301 etc)
I have a pickupDate and returnDate in my OrderHistory table. I want to extract the sum of rental days of all OrderHistory entries, grouped/ordered by month. A cte seems to be the solution but I don´t get how to implement it in my query since the cte´s i saw were refering to themselves where it says "FROM cte".
I tried something like this:
SELECT
SUM((EXTRACT (DAY FROM("OrderHistory"."returnDate")-("OrderHistory"."pickupDate")))) as traveltime
, to_char("OrderHistory"."pickupDate"::date, 'YYYY-MM') as M
FROM
"OrderHistory"
GROUP BY
M
ORDER BY
M
But the outcome doesn´t split bookings btw two months (e.g. pickupDate=27th march 2022 and returnDate=03rd of april 2022) but will assign the whole 7 days to the month of march, since the returndate is in it. It should show 4 days in march and 3 in april.
Sorry for the probably very stupid question but I am a beginner. (my code is written in postgresql btw)
PostgreSQL naming conventions
Are PostgreSQL column names case-sensitive?
use legal, lower-case names exclusively so double-quoting is not
needed.
Final result in db fiddle
Add daterange column.
alter table order_history add column date_ranges daterange;
update order_history
with a(m_begin, m_end, pickup_date) as
(select date_trunc('month', pickup_date)::date,
(date_trunc('month', pickup_date) + interval '1 month - 1 day')::date,
pickup_date from order_history)
update order_history set date_ranges =
daterange(a.m_begin, a.m_end,'[]') from a
where a.pickup_date = order_history.pickup_date;
then final query:
WITH A AS(
select
pickup_date,
return_date,
return_date - pickup_date as total,
case when return_date <# date_ranges then (return_date - pickup_date)
else ( date_trunc('month', pickup_date) + interval '1 month - 1 day')::date - pickup_date
end partial_mth
from order_history),
b as (SELECT *, a.total - partial_mth parital_not_mth FROM a)
select *,
case when to_char(pickup_date,'YYYY-MM') = to_char(return_date,'YYYY-MM')
then
sum(partial_mth) over(partition by to_char(pickup_date,'YYYY-MM')) +
sum(parital_not_mth) over (partition by to_char(return_date,'YYYY-MM'))
else sum(partial_mth) over(partition by to_char(pickup_date,'YYYY-MM'))
end
from b;
After trying different things I think I found the best answer to my question, that I want to share with the community:
WITH hier as (
SELECT
"OrderHistory"."pickupDate" as start_date
, "OrderHistory"."returnDate" as end_date
, to_char("OrderHistory"."pickupDate"::date, 'YYYY-MM') as M
FROM
"OrderHistory"
GROUP BY
1, 2, 3
ORDER BY
3
), calendar as (
select date '2022-01-01' + (n || ' days')::interval calendar_date
from generate_series(0, 365) n
)
select
to_char(calendar_date::date, 'YYYY-MM')
, count(*) as tage_gebucht
from calendar
inner join hier on calendar.calendar_date between start_date and end_date
where calendar_date between '2022-01-01' and '2022-12-31'
group by 1
order by 1;
I think this is the simplest solution I came up with.
How do I find the first, second, third and fourth saturday of the month?
Ex.: I want to end up with this format...
Blockquote
YYYY, MM, Week#1
Blockquote
YYYY, MM, Week#2
Blockquote
Thanks,
This solution does not depend on Datefirst setting.
declare #d datetime = getdate();
select
dateadd(dd, n, firstSaturday)
from (
select
firstSaturday = dateadd(day, 7-(##datefirst+datepart(weekday, dateadd(day,-1, convert(char(6),#d,112)+'01')))%7, dateadd(day,-1, convert(char(6),#d,112)+'01'))
) t
cross apply (values (0), (7), (14), (21)) q(n)
Here is one way to do it, using a stacked cte to create an inline tally table, with another cte on top of that to generate the months calendar.
Please note that you can change the GETDATE() in the first row code to any date you want (even if it's in the middle of the month) and the code will produce all the Saturdays in that month.
-- Get the current month's start date
DECLARE #MonthStart datetime = DATEADD(MONTH, (DATEDIFF(MONTH, 0, GETDATE())), 0)
;WITH lv0 AS (SELECT 0 g UNION ALL SELECT 0)
,lv1 AS (SELECT 0 g FROM lv0 a CROSS JOIN lv0 b) -- 4
,lv2 AS (SELECT 0 g FROM lv1 a CROSS JOIN lv1 b) -- 16
,lv3 AS (SELECT 0 g FROM lv2 a CROSS JOIN lv2 b) -- 256
,Tally (n) AS (SELECT ROW_NUMBER() OVER (ORDER BY (SELECT NULL)) FROM lv3)
-- gets all the dates in the current month
,CurrentMonth AS (SELECT TOP (32) dateadd(day, n-1, #MonthStart) As TheDate
FROM Tally
WHERE MONTH(dateadd(day, n-1, #MonthStart)) = MONTH(#MonthStart)
ORDER BY n)
-- gets all the Saturday dates of the current month
SELECT TheDate, DATENAME(WEEKDAY, TheDate)
FROM CurrentMonth
WHERE DATEPART(WEEKDAY, TheDate) = 7 -- Depending on server settings!
If you already have a numbers table, you can use it instead of the stacked cte. If you don't know what is a numbers table and why you should have one, read The "Numbers" or "Tally" Table: What it is and how it replaces a loop by Jeff Moden
You can try this.
SET DATEFIRST 1
DECLARE #MonthId INT = 5
DECLARE #FirstDayOfTheMonth DATE = CONCAT(YEAR(GETDATE()), RIGHT(CONCAT('00', #MonthId),2), '01')
DECLARE #SaturdayId INT = 6
SELECT
DATEADD(DAY, #SaturdayId + WK.ID - DATEPART(WEEKDAY, #FirstDayOfTheMonth), #FirstDayOfTheMonth)
FROM ( VALUES(0),(7),(14),(21),(28)) AS WK(ID)
WHERE
MONTH(DATEADD(DAY, #SaturdayId + WK.ID- DATEPART(WEEKDAY, #FirstDayOfTheMonth),#FirstDayOfTheMonth)) = #MonthId
I am trying to find the total number of members in a given period. Say I have the following data:
member_id start_date end_date
1 9/1/2013 12/31/2013
2 10/1/2013 11/12/2013
3 12/1/2013 12/31/2013
4 5/1/2012 8/5/2013
5 9/1/2013 12/31/2013
6 7/1/2013 12/31/2013
7 6/6/2012 12/5/2013
8 10/1/2013 12/31/2013
9 7/8/2013 12/31/2013
10 1/1/2012 11/5/2013
In SQL I need to create a report that will list out the number of members in each month of the year. In this case something like the following:
Date Members Per Month
Jan-12 1
Feb-12 1
Mar-12 1
Apr-12 1
May-12 2
Jun-12 3
Jul-12 3
Aug-12 3
Sep-12 3
Oct-12 3
Nov-12 3
Dec-12 3
Jan-13 3
Feb-13 3
Mar-13 3
Apr-13 3
May-13 3
Jun-13 3
Jul-13 5
Aug-13 4
Sep-13 6
Oct-13 8
Nov-13 6
Dec-13 6
So there is only 1 member from Jan-12 (member id 10) until May-12 when member id 4 joins making the count 2 and so on.
The date range can be all over so I can't specify the specific dates but it is by month, meaning that even if someone ends 12-1 it is considered active for the month for Dec.
I was able to create the following stored procedure that was able to accomplish what I needed:
USE [ValueBasedSandbox]
GO
/****** Object: StoredProcedure [dbo].[sp_member_count_per_month] Script Date: 01/08/2015 12:02:37 ******/
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
-- =============================================
-- Create date: 2015-08-01
-- Description: Find the counts per a given date passed in
-- =============================================
CREATE PROCEDURE [dbo].[sp_member_count_per_month]
-- Add the parameters for the stored procedure here
#YEAR int
, #ENDYEAR int
AS
DECLARE #FIRSTDAYMONTH DATETIME
DECLARE #LASTDAYMONTH DATETIME
DECLARE #MONTH INT = 1;
--Drop the temporary holding table if exists
IF OBJECT_ID('tempdb.dbo.##TEMPCOUNTERTABLE', 'U') IS NOT NULL
DROP TABLE dbo.##TEMPCOUNTERTABLE
CREATE TABLE dbo.##TEMPCOUNTERTABLE (
counter INT
, start_date DATETIME2
, end_date DATETIME2
)
--Perform this loop for each year desired
WHILE #YEAR <= #ENDYEAR
BEGIN
--Perform for each month of the year
WHILE (#MONTH <= 12)
BEGIN
-- SET NOCOUNT ON added to prevent extra result sets from
-- interfering with SELECT statements.
SET NOCOUNT ON;
SET #FIRSTDAYMONTH = DATEADD(MONTH, #MONTH - 1, DATEADD(YEAR, #YEAR-1900, 0))
SET #LASTDAYMONTH = DATEADD(MONTH, #MONTH, DATEADD(YEAR, #YEAR-1900, 0)-1)
INSERT INTO dbo.##TEMPCOUNTERTABLE(counter, start_date, end_date)
SELECT COUNT(*) AS counter
, #FIRSTDAYMONTH AS start_date
, #LASTDAYMONTH AS end_date
FROM dbo.member_table
WHERE start_date <= #LASTDAYMONTH
AND end_date >= #FIRSTDAYMONTH
--Increment through all the months of the year
SET #MONTH = #MONTH + 1
END -- End Monthly Loop
--Reset Month counter
SET #MONTH = 1
--Increment the desired years
SET #YEAR = #YEAR + 1
END -- End Yearly Loop
--Display the results
SELECT *
FROM dbo.##TEMPCOUNTERTABLE
-- Drop the temp table
IF OBJECT_ID('tempdb.dbo.##TEMPCOUNTERTABLE', 'U') IS NOT NULL
DROP TABLE dbo.##TEMPCOUNTERTABLE
GO
This should do the trick
with datesCte(monthStart,monthEnd) as
(
select cast('20120101' as date) as monthStart, cast('20120131' as date) as monthEnd
union all
select DATEADD(MONTH, 1, d.monthStart), dateadd(day, -1, dateadd(month, 1, d.monthStart))
from datesCte as d
where d.monthStart < '20140101'
)
select *
from datesCte as d
cross apply
(
select count(*) as cnt
from dbo.MemberDates as m
where m.startDate <= d.monthEnd and m.endDate > d.monthStart
) as x
order by d.monthStart
I'm trying to query some transactional data to establish the CurrentProductionHours value for each Report at the end of each month.
Providing there has been a transaction for each report in each month, that's pretty straight-forward... I can use something along the lines of the code below to partition transactions by month and then pick out the rows where TransactionByMonth = 1 (effectively, the last transaction for each report each month).
SELECT
ReportId,
TransactionId,
CurrentProductionHours,
ROW_NUMBER() OVER (PARTITION BY [ReportId], [CalendarYear], [MonthOfYear]
ORDER BY TransactionTimestamp desc
) AS TransactionByMonth
FROM
tblSource
The problem that I have is that there will not necessarily be a transaction for every report every month... When that's the case, I need to carry forward the last known CurrentProductionHours value to the month which has no transaction as this indicates that there has been no change. Potentially, this value may need to be carried forward multiple times.
Source Data:
ReportId TransactionTimestamp CurrentProductionHours
1 2014-01-05 13:37:00 14.50
1 2014-01-20 09:15:00 15.00
1 2014-01-21 10:20:00 10.00
2 2014-01-22 09:43:00 22.00
1 2014-02-02 08:50:00 12.00
Target Results:
ReportId Month Year ProductionHours
1 1 2014 10.00
2 1 2014 22.00
1 2 2014 12.00
2 2 2014 22.00
I should also mention that I have a date table available, which can be referenced if required.
** UPDATE 05/03/2014 **
I now have query which is genertating results as shown in the example below but I'm left with islands of data (where a transaction existed in that month) and gaps in between... My question is still similar but in some ways a little more generic - What is the best way to fill gaps between data islands if you have the dataset below as a starting point?
ReportId Month Year ProductionHours
1 1 2014 10.00
1 2 2014 12.00
1 3 2014 NULL
2 1 2014 22.00
2 2 2014 NULL
2 3 2014 NULL
Any advice about how to tackle this would be greatly appreciated!
Try this:
;with a as
(
select dateadd(m, datediff(m, 0, min(TransactionTimestamp))+1,0) minTransactionTimestamp,
max(TransactionTimestamp) maxTransactionTimestamp from tblSource
), b as
(
select minTransactionTimestamp TT, maxTransactionTimestamp
from a
union all
select dateadd(m, 1, TT), maxTransactionTimestamp
from b
where tt < maxTransactionTimestamp
), c as
(
select distinct t.ReportId, b.TT from tblSource t
cross apply b
)
select c.ReportId,
month(dateadd(m, -1, c.TT)) Month,
year(dateadd(m, -1, c.TT)) Year,
x.CurrentProductionHours
from c
cross apply
(select top 1 CurrentProductionHours from tblSource
where TransactionTimestamp < c.TT
and ReportId = c.ReportId
order by TransactionTimestamp desc) x
A similar approach but using a cartesian to obtain all the combinations of report ids/months.
in the first step.
A second step adds to that cartesian the maximum timestamp from the source table where the month is less or equal to the month in the current row.
Finally it joins the source table to the temp table by report id/timestamp to obtain the latest source table row for every report id/month.
;
WITH allcombinations -- Cartesian (reportid X yearmonth)
AS ( SELECT reportid ,
yearmonth
FROM ( SELECT DISTINCT
reportid
FROM tblSource
) a
JOIN ( SELECT DISTINCT
DATEPART(yy, transactionTimestamp)
* 100 + DATEPART(MM,
transactionTimestamp) yearmonth
FROM tblSource
) b ON 1 = 1
),
maxdates --add correlated max timestamp where the month is less or equal to the month in current record
AS ( SELECT a.* ,
( SELECT MAX(transactionTimestamp)
FROM tblSource t
WHERE t.reportid = a.reportid
AND DATEPART(yy, t.transactionTimestamp)
* 100 + DATEPART(MM,
t.transactionTimestamp) <= a.yearmonth
) maxtstamp
FROM allcombinations a
)
-- join previous data to the source table by reportid and timestamp
SELECT distinct m.reportid ,
m.yearmonth ,
t.CurrentProductionHours
FROM maxdates m
JOIN tblSource t ON t.transactionTimestamp = m.maxtstamp and t.reportid=m.reportid
ORDER BY m.reportid ,
m.yearmonth