How do I manipulate the pivoted data and insert the missing dates.

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As we know that the record will stored to the database if there is a transaction on that date. But if there is certain date that we had no transactions, No date of transactions will be keep on record to the database. Now, I will make a report, I need to display the dates including no transactions. Including Saturday and Sunday. I used pivot method to my sql query.

What I have tried:

SELECT *
FROM (
    SELECT 
       A.employee_id,B.firstname, B.branch_code , A.trans_date as [Date],A.bioinoutmode as [Type], 
        A.trans_time as Time 
    FROM biometricdata A
LEFT JOIN Employees B ON A.employee_id = B.employee_id
WHERE A.employee_id = B.employee_id
) as s
PIVOT
(
    MAX(Time)
    FOR [Type] IN ([0],[1],[2],[3],[4],[5])
)AS pvt Order by DATE

Posted 30-Nov-17 21:26pm

Member 13264296

Updated 30-Nov-17 21:37pm

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CHill60 · Answer 1 · 2017-11-30T21:37:00

Solution 1

I usually do this by generating a list of the dates that I need (see Generating a Sequence in SQL[^] ) and then using that table in a LEFT JOIN to my actual data table.
E.g.

SQL

SELECT ....-- column list
FROM MyListOfDates D
LEFT OUTER JOIN biometricdata A ON D.DesiredDate = A.[DATE] -- or whatever your column is
LEFT OUTER JOIN Employees B ON A.employee_id = B.employee_id

Just remember to handle the resulting NULLs returned from A & B for the empty dates

Posted 30-Nov-17 21:37pm

CHill60

Comments

Member 13264296 3-Dec-17 20:38pm

I had another code here. But the missin dates are not display..

DECLARE @startdate DATETIME
,@enddate DATETIME;

SET @startdate = '11/18/2017';
SET @enddate = '11/25/2017';
WITH calendardates
AS ( SELECT date = @startdate
UNION ALL
SELECT DATEADD(DAY, 1, date)
FROM calendardates
WHERE DATEADD(DAY, 1, date) <= @enddate
)
SELECT CONVERT(VARCHAR(15), c.date, 101) AS logdate
,t.employee_id
,CONVERT(VARCHAR(10), t.trans_time, 108) AS timein
FROM dbo.biometricdata t
RIGHT JOIN calendardates c
ON t.trans_date = c.date WHERE t.employee_id = '7263'

CHill60 4-Dec-17 8:28am

You should use

FROM calendardates c
LEFT OUTER JOIN dbo.biometricdata t ON t.trans_date = c.date

.
Use LEFT OUTER when you don't want data on the left "LEFT OUT"!