MSSQL Order by date with distinct - sql

I have this query segment below where I'm trying to build a string of "month-year" from a date field in this table. It's very important that it comes in the right order starting from current month going forward 12 months.
DECLARE #cols AS NVARCHAR(MAX)
SELECT #cols = STUFF(
(SELECT N',' + QUOTENAME(y) AS [text()]
FROM (SELECT DISTINCT CONVERT(char(3), StartDate, 0) + '-' +
RIGHT(CONVERT(varchar, YEAR(StartDate)), 2) AS y
FROM Products2
) AS Y
--ORDER BY y desc
FOR XML PATH('')),
1, 1, N'')
This query isn't pulling the dates in the right order and I wanted to see if you guys know of any neat tricks to pull the dates in the correct order. I can bring in the startDate column and sort it by that but it brings in duplicates as it may have several entries for the same month. I've created a sample table here http://sqlfiddle.com/#!6/3a500/5

You could use
DECLARE #cols AS NVARCHAR(MAX);
SELECT #cols = STUFF((SELECT N',' + QUOTENAME(y) AS [text()]
FROM (SELECT CONVERT(CHAR(3), StartDate, 0) + '-'
+ RIGHT(CONVERT(VARCHAR, YEAR(StartDate)), 2) AS y,
MIN(StartDate) AS z
FROM Products2
GROUP BY CONVERT(CHAR(3), StartDate, 0) + '-'
+ RIGHT(CONVERT(VARCHAR, YEAR(StartDate)), 2)) AS Y
ORDER BY z
FOR XML PATH('')), 1, 1, N'');
SELECT #cols;
SQL Fiddle

It looks like you just getting the month/year so we can truncate to the first day of the month and include that in the query.
DATEADD(month, DATEDIFF(month, 0, StartDate), 0) monthStart
Now we can order by it:
DECLARE #cols AS NVARCHAR(MAX);
SELECT #cols = STUFF(
(SELECT N',' + QUOTENAME(y) AS [text()]
FROM (
SELECT DISTINCT CONVERT(char(3), StartDate, 0) + '-' +
RIGHT(CONVERT(varchar, YEAR(StartDate)), 2) AS y,
DATEADD(month, DATEDIFF(month, 0, StartDate), 0) monthStart
FROM Products2
) AS Y
ORDER BY monthStart
FOR XML PATH('')),
1, 1, N'');
select #cols;
This is the output:
[Dec-15],[Jan-16],[Feb-16],[Mar-16],[Apr-16],[May-16],[Jun-16],[Jul-16],[Aug-16],[Sep-16],[Oct-16],[Nov-16],[Dec-16]
Is that what you are looking for? Here is a fiddle:
http://sqlfiddle.com/#!6/3a500/67
Better yet, just select the distinct month start dates and then only do the string conversion on that.
DECLARE #cols AS NVARCHAR(MAX);
SELECT #cols = STUFF(
(SELECT N',' + QUOTENAME(CONVERT(char(3), monthStart, 0) + '-' +
RIGHT(CONVERT(varchar, YEAR(monthStart)), 2)) AS [text()]
FROM (
SELECT DISTINCT
DATEADD(month, DATEDIFF(month, 0, StartDate), 0) monthStart
FROM Products2
) AS Y
ORDER BY monthStart
FOR XML PATH('')),
1, 1, N'');
select #cols;
Here is that fiddle:
http://sqlfiddle.com/#!6/3a500/72

If you are using SQL Server 2012+ you could use FORMAT function:
DECLARE #cols AS NVARCHAR(MAX);
;WITH cte AS -- get only one date per month/year
(
SELECT MIN(StartDate) AS StartDate
FROM #Products2
GROUP BY YEAR(StartDate),MONTH(StartDate)
)
SELECT #cols = STUFF((SELECT ',' + QUOTENAME(FORMAT(StartDate, 'MMM-yy'))
FROM cte
ORDER BY StartDate
FOR XML PATH('')),
1, 1, N'');
SELECT #cols;
LiveDemo
Output:
╔══════════════════════════════════════════════════════════════════════════════════════════════════════════════════════╗
║ result ║
╠══════════════════════════════════════════════════════════════════════════════════════════════════════════════════════╣
║ [Dec-15],[Jan-16],[Feb-16],[Mar-16],[Apr-16],[May-16],[Jun-16],[Jul-16],[Aug-16],[Sep-16],[Oct-16],[Nov-16],[Dec-16] ║
╚══════════════════════════════════════════════════════════════════════════════════════════════════════════════════════╝

Related

Dynamic SQL Rolling 12 Months Pivot

I am new to Dynamic SQL. I have the following table:
CustName
Date
Hours
First
01/01/2021
12
Second
01/01/2021
10
Second
05/02/2021
1
Second
10/11/2021
14
I am trying to make a rolling calendar Pivot for the last 12 months of summed hours.
Here is the code I have done:
DECLARE #cols AS NVARCHAR(MAX),
#query AS NVARCHAR(MAX)
select #cols = STUFF(
(SELECT distinct ',' + QUOTENAME(DATENAME(mm,Date) + ' of '
+ DATENAME(year,Date)) AS months_ago
FROM [TimeEntryList]
WHERE Date > DATEADD(year, -1,
DATEFROMPARTS(YEAR(GETDATE()), MONTH(GETDATE()), 1))
FOR XML PATH(''), TYPE
).value('.', 'NVARCHAR(MAX)')
,1,1,'')
set #query = 'SELECT CustName, ' + #cols + '
from ( select
[CustName],
datename(mm,[Date])+'' of ''+datename(year,[Date])AS
months_ago, [Hours] AS NetQty
from [TimeEntryList]
WHERE [Date] > DATEADD(year, -1,
DATEFROMPARTS(YEAR(GETDATE()), MONTH(GETDATE()), 1))
) as source
pivot
(
sum(NetQty) For months_ago in (' + #cols + ')
) as PivotTable'
execute sp_executesql #query;
This works 'kind of' how I want it, but the columns are not ordered from current date backwards.
I'm wanting it to start at the current month backwards. So if this month is August it would be:
CustName
Sep 2020
.... months
August 2021
First
12
14
Second
3
12
Is there a good way to start by current month in Dynamic SQL into a pivot and go back 12 months?
I tried 'order by months_ago desc' etc, but that doesn't work
You simply need to add a WHERE filter. This needs to be in both parts of the query.
DECLARE #cols AS NVARCHAR(MAX),
#query AS NVARCHAR(MAX);
SET #cols = STUFF(
(SELECT ',' + QUOTENAME(DATENAME(mm, EOMONTH(Date)) + ' of ' + DATENAME(year, EOMONTH(Date))) AS months_ago
FROM [TimeEntryList]
WHERE [Date] > DATEADD(year, -1, DATEFROMPARTS(YEAR(GETDATE()), MONTH(GETDATE()), 1))
GROUP BY EOMONTH(Date)
ORDER BY EOMONTH(Date)
FOR XML PATH(''), TYPE
).value('text()[1]', 'NVARCHAR(MAX)')
,1,1,'');
SET #query = '
SELECT
CustName,
' + #cols + '
from (
select
[CustName],
datename(mm,[Date])+'' of ''+datename(year,[Date])AS months_ago, [Hours] AS
NetQty
from [TimeEntryList]
WHERE [Date] > DATEADD(year, -1, DATEFROMPARTS(YEAR(GETDATE()), MONTH(GETDATE()), 1))
) as source
pivot
(
sum(NetQty) For months_ago in (' + #cols + ')
) as PivotTable;
';
execute sp_executesql #query;
You could even pass through a starting date parameter, like this:
DECLARE #cols AS NVARCHAR(MAX),
#query AS NVARCHAR(MAX),
#dateFrom datetime;
SET #dateFrom = DATEADD(year, -1, DATEFROMPARTS(YEAR(GETDATE()), MONTH(GETDATE()), 1));
SET #cols = STUFF(
(SELECT ',' + QUOTENAME(DATENAME(mm,EOMONTH(Date)) + ' of ' + DATENAME(year,EOMONTH(Date)) AS months_ago
FROM [TimeEntryList]
WHERE [Date] > #dateFrom
GROUP BY EOMONTH(Date)
ORDER BY EOMONTH(Date)
FOR XML PATH(''), TYPE
).value('text()[1]', 'NVARCHAR(MAX)')
,1,1,'');
SET #query = '
SELECT
CustName,
' + #cols + '
from (
select
[CustName],
datename(mm,[Date])+'' of ''+datename(year,[Date])AS months_ago, [Hours] AS
NetQty
from [TimeEntryList]
WHERE [Date] > #dateFrom
) as source
pivot
(
sum(NetQty) For months_ago in (' + #cols + ')
) as PivotTable;
';
execute sp_executesql
#query
N'#dateFrom datetime',
#dateFrom = #dateFrom;

The column '30' was specified multiple times for 'stat'

i am facing this error on executing query
The column '30' was specified multiple times for 'stat'.
FROM Probale
--WHERE (EntryDate BETWEEN #StartDate AND #Enddate)
ORDER BY EntryDate
DECLARE #cols NVARCHAR(4000)
SELECT #cols = COALESCE(#cols + ',[' + CONVERT(varchar, DATEPART(DAY, EntryDate), 112)
+ ']','[' + CONVERT(varchar,DATEPART(DAY, EntryDate), 112) + ']')
FROM #Dates24
ORDER BY EntryDate
DECLARE #qry NVARCHAR(4000) =
N'SELECT *
FROM (SELECT ItemMasterFile.Descriptionitem,Probale.prdqty,
DATEPART(DAY, Probale.EntryDate)as DDate
FROM Probale Inner Join ItemMasterFile on Probale.Codeitem=ItemMasterFile.Codeitem )prd
PIVOT (Sum(prdqty) FOR DDate IN (' + #cols + ')) AS stat
'
-- Executing the query
EXEC(#qry)```
Your column names should be unique. You can try this for column names.
SELECT #cols = #cols + ',' + QUOTENAME( CONVERT(varchar(2),EntryDate) )
FROM (SELECT DISTINCT DATEPART(DAY, EntryDate) AS EntryDate FROM #Dates24 ) T
ORDER BY EntryDate
SET #cols = STUFF(#cols, 1, 1, '')

Student Attendance Report Month-wise SQL Query

There are 3 tables -
Attendance (EnrollmentNo,SubjectCode,Date,Attendance)
Student (EnrollmentNo, RollNo),
UserDetails(EnrollmentNo,FirstName,LastName).
Now what I want is to display the attendance month-wise taking Roll No, Name, dates as column and Student.RollNo, UserDetails.FirstName, UserDetails.LastName, Attendance.Attendance as the data for the columns respectively.
But the problem I am facing is how to generate date columns dynamically and put the attendance data in the respective date column.
Input - Startdate and Enddate
Expected Output -
-------------------------------------------------------
| Roll No | Name | 01-09-2018 | 01-12-2018|
-------------------------------------------------------
| 15 | Suyash Gupta | 1 | 0 |
-------------------------------------------------------
| 24 | Himanshu Shukla | 2 | 2 |
-------------------------------------------------------
| 32 | Dhruv Raj Sirohi | 1 | 1 |
-------------------------------------------------------
This is my approach -
DECLARE #startdate date
DECLARE #enddate date
SET #startdate = convert(date,'01-09-2018')
SET #enddate = convert(date,'01-12-2018')
;with cte (#startdate, #enddate) as /*I don't know how to pass my date range
in cte() as this takes table column*/
(
select 1
union all
select dateadd(dd, 1, startdate)
from cte
where startdate <= enddate
)
select c.startdate
into #tempDates
from cte c
select #cols = STUFF((SELECT distinct ',' + QUOTENAME(convert(CHAR(10),
startdate, 120))
from #tempDates
FOR XML PATH(''), TYPE
).value('.', 'NVARCHAR(MAX)')
,1,1,'')
set #query = 'SELECT RollNo,FirstName,LastName, ' + #cols + ' from
(
select S.RollNo,U.FirstName,U.LastName,
D.startdate,
convert(CHAR(10), startdate, 120) PivotDate
from #tempDates D
left join Attendance A
on D.startdate = A.Date
) x
pivot
(
count(startdate)
for PivotDate in (' + #cols + ')
) p '
execute(#query)
you have some issues with your code, look at the differences in my code:
DECLARE #startdate date = '20180109';
DECLARE #enddate date = '20180112';
DECLARE #cols as varchar(2000);
DECLARE #query as varchar(MAX);
WITH cte (startdate)
AS
(SELECT
#startdate AS startdate
UNION ALL
SELECT
DATEADD(DAY, 1, startdate) AS startdate
FROM cte
WHERE startdate < #enddate)
SELECT
#cols = STUFF((SELECT DISTINCT
',' + QUOTENAME(CONVERT(CHAR(10),
startdate, 120))
FROM cte
FOR XML PATH (''), TYPE)
.value('.', 'NVARCHAR(MAX)')
, 1, 1, '')
SET #query = 'SELECT RollNo,FirstName,LastName, ' + #cols + ' from
(
select S.RollNo,U.FirstName,U.LastName,
D.startdate,
convert(CHAR(10), startdate, 120) PivotDate
from #tempDates D
left join Attendance A
on D.startdate = A.Date
) x
pivot
(
count(startdate)
for PivotDate in (' + #cols + ')
) p '
EXECUTE (#query)
Do you mean something like this:
DECLARE #StartDate AS DATETIME, #EndDate AS DATETIME
SET #StartDate='2018-01-01'
SET #EndDate='2018-01-10'
SELECT Student.RollNo, Student.FirstName, Student.LastName, Attendance.Date
FROM Attendance,Student,UserDetails
WHERE Attendance.EnrollmentNo=Student.EnrollmentNo
AND UserDetails.EnrollmentNo=Student.EnrollmentNo
AND Attendance.[Date] between #StartDate and #EndDate
UPDATE
Based on what you said in the question maybe the following code is what you need:
SELECT Student.RollNo, Student.FirstName, Student.LastName,
STUFF((SELECT ','+CAST([DATE] AS VARCHAR(30))
FROM Attendance
WHERE Attendance.EnrollmentNo=Student.EnrollmentNo
AND Attendance.[Date] between #StartDate AND #EndDate
FOR XML PATH('')
), 1, 1, '') Dates
FROM Student,UserDetails
WHERE UserDetails.EnrollmentNo=Student.EnrollmentNo
This is running code and giving me the desired output. I want to thank Lobo, who corrected me, and everyone else who had put in the efforts to help me. Thank you all and stackoverflow who provided me the platform to query the problem I was facing.
DECLARE #startdate date = '20180109';
DECLARE #enddate date = '20180112';
DECLARE #cols as varchar(2000);
DECLARE #query as varchar(MAX);
WITH cte (startdate)
AS
(SELECT
#startdate AS startdate
UNION ALL
SELECT
DATEADD(DAY, 1, startdate) AS startdate
FROM cte
WHERE startdate < #enddate
)
select c.startdate
into #tempDates
from cte c
SELECT
#cols = STUFF((SELECT DISTINCT
',' + QUOTENAME(CONVERT(CHAR(10),
startdate, 120))
FROM #tempDates
FOR XML PATH (''), TYPE)
.value('.', 'NVARCHAR(MAX)')
, 1, 1, '')
SET #query = 'SELECT RollNo,FirstName,LastName, ' + #cols + ' from
(
select S.RollNo,U.FirstName,U.LastName,
D.startdate,
convert(CHAR(10), startdate, 120) PivotDate
from #tempDates D,Attendance A, Student S, UserDetails U
where D.startdate = A.Date and A.EnrollmentNo=S.EnrollmentNo and A.EnrollmentNo=U.userID
) x
pivot
(
count(startdate)
for PivotDate in (' + #cols + ')
) p '
EXECUTE (#query)
drop table #tempDates

Ignore Sunday while generating student attendance report in SQL

This code gives me the attendance report between two dates passed as a parameter.
I will pass dates respective of the month selected from the C# code.
But I want to skip Sundays while generating the attendance report. How can I achieve this?
DECLARE #startdate date = '20180109';
DECLARE #enddate date = '20180112';
DECLARE #cols as varchar(2000);
DECLARE #query as varchar(MAX);
WITH cte (startdate)
AS
(SELECT
#startdate AS startdate
UNION ALL
SELECT
DATEADD(DAY, 1, startdate) AS startdate
FROM cte
WHERE startdate < #enddate
)
select c.startdate
into #tempDates
from cte c
SELECT
#cols = STUFF((SELECT DISTINCT
',' + QUOTENAME(CONVERT(CHAR(10),
startdate, 120))
FROM #tempDates
FOR XML PATH (''), TYPE)
.value('.', 'NVARCHAR(MAX)')
, 1, 1, '')
SET #query = 'SELECT RollNo,FirstName,LastName, ' + #cols + ' from
(
select S.RollNo,U.FirstName,U.LastName,
D.startdate,
convert(CHAR(10), startdate, 120) PivotDate
from #tempDates D,Attendance A, Student S, UserDetails U
where D.startdate = A.Date and A.EnrollmentNo=S.EnrollmentNo and A.EnrollmentNo=U.userID
) x
pivot
(
count(startdate)
for PivotDate in (' + #cols + ')
) p '
EXECUTE (#query)
drop table #tempDates
How about changing #TempDates?
select c.startdate
into #tempDates
from cte c
where datename(weekday, c.startdate) <> 'Sunday';
This assumes that your internationalization settings are set to "English".

How to create Temp Table with month columns based on date parameters?

I have a stored procedure that accepts two Dates. In my stored procedure, I need to create a temp table with the months in between the two dates as columns.
For example,
If the user passes in
1/1/2016 , 8/1/2016
I need a temp table with the columns:
January February March April May June July August
How could I create this type of temp table with columns created in this manner? With the columns being based on the two dates passed in?
The following script should get you started (and almost there):
declare #start_date DATE = '20160101'
declare #end_date DATE = '20160801'
;WITH CTE AS
(
SELECT #start_date AS cte_start_date, DATENAME(month, #start_date) AS Name,
CAST(' ALTER TABLE #myTemp ADD ' + DATENAME(month, #start_date) + ' INT ' + CHAR(13) + CHAR(10) AS VARCHAR(8000)) AS SqlStr
UNION ALL
SELECT DATEADD(MONTH, 1, cte_start_date), DATENAME(month, DATEADD(MONTH, 1, cte_start_date)) AS Name,
CAST(SqlStr + ' ALTER TABLE #myTemp ADD ' + DATENAME(month, DATEADD(MONTH, 1, cte_start_date)) + ' INT ' + CHAR(13) + CHAR(10) AS VARCHAR(8000))
FROM CTE
WHERE DATEADD(MONTH, 1, cte_start_date) <= #end_date
)
SELECT cte_start_date, Name, SqlStr
FROM CTE
Using a recursive-CTE it generates a loop between start and end date, and for each month it computes its string representation and also creates a alter script to add the columns to a temporary table.
The CTE computes the SQL script gradually, so that the final script is on the last line.
Try This ....
declare #start_date DATE = '20160101'
declare #end_date DATE = '20160801'
;WITH CTE AS
(
SELECT #start_date AS cte_start_date, DATENAME(month, #start_date) AS NAME , 0 AS Coun
UNION ALL
SELECT DATEADD(MONTH, 1, cte_start_date), DATENAME(month, DATEADD(MONTH, 1, cte_start_date)) AS NAME , 0 AS Coun
FROM CTE
WHERE DATEADD(MONTH, 1, cte_start_date) <= #end_date
)
SELECT Coun,Name
INTO #tmp1
FROM CTE
DECLARE #cols AS NVARCHAR(MAX),
#query AS NVARCHAR(MAX)
select #cols = STUFF((SELECT ',' + Name
from #tmp1
FOR XML PATH(''), TYPE
).value('.', 'NVARCHAR(MAX)')
,1,1,'')
set #query = 'SELECT ' + #cols + ' from
(
select Coun,Name
from #tmp1
) x
pivot
(
MAX(Coun)
for Name in (' + #cols + ')
) p '
execute(#query);
DROP TABLE #tmp1
It Will Return OutPut Like your expected output .......