Home/ Questions/Q 7092703
In Process

The Archive Base Latest Questions

Editorial Team
  • 0
Asked: 2026-05-28T08:20:51+00:00

I have a stored proc that produces a table like this: PeriodStart PeriodEnd TotalActive

  • 0

I have a stored proc that produces a table like this:

PeriodStart     PeriodEnd     TotalActive     TotalAdded     TotalRemoved
2011-03-01      2011-03-07    123             456            789
2011-03-08      2011-03-14    567             789            123
2011-03-15      2011-03-21    444             555            666

etc…

I need to display the results in a table that looks like this:

          03-01-2011     03-08-2011     03-15-2011
Active    123            567            444
Added     456            789            555
Removed   789            123            666

I’ve never had to use PIVOT before so I’m a little unsure of how to modify the below SQL in order to achieve the desired result. Here’s the sproc:

ALTER PROCEDURE [dbo].[TrendReport]
    @DateStart datetime,
    @DateEnd datetime,
    @Frequency varchar(5)
AS
BEGIN
    SELECT
      PeriodStart,
      PeriodEnd,
      SUM(TotalActive) As TotalActive,
      SUM(TotalAdded) As TotalAdded,
      SUM(TotalRemoved) As TotalRemoved
    FROM (
      SELECT
        PeriodStart = CASE @Frequency
          WHEN 'day'     THEN DATEADD(hour, 0, DATEDIFF(DAY, 0, [Date]))
          WHEN 'week'    THEN DATEADD(hour, 0, DATEDIFF(DAY, 0, DATEADD(DAY, 1 - DATEPART(WEEKDAY, [Date]), [Date])))
          WHEN 'month'   THEN DATEADD(hour, 0, DATEDIFF(DAY, 0, DATEADD(MONTH,   DATEDIFF(MONTH,   0, [Date]), 0)))
          WHEN 'quarter' THEN DATEADD(hour, 0, DATEDIFF(DAY, 0, DATEADD(QUARTER, DATEDIFF(QUARTER, 0, [Date]), 0)))
          WHEN 'year'    THEN DATEADD(hour, 0, DATEDIFF(DAY, 0, DATEADD(YEAR,    DATEDIFF(YEAR,    0, [Date]), 0)))
        END,
        PeriodEnd   = CASE @Frequency
          WHEN 'day'     THEN DATEADD(s, -1, DATEADD(day, 1, DATEDIFF(DAY, 0, [Date])))
          WHEN 'week'    THEN DATEADD(s, -1, DATEADD(hour, 0, DATEDIFF(DAY, -1, DATEADD(DAY, 7 - DATEPART(WEEKDAY, [Date]), [Date]))))
          WHEN 'month'   THEN DATEADD(s, -1, DATEADD(hour, 0, DATEDIFF(DAY, -1, DATEADD(DAY, -1, DATEADD(MONTH,   DATEDIFF(MONTH,   0, [Date]) + 1, 0)))))
          WHEN 'quarter' THEN DATEADD(s, -1, DATEADD(hour, 0, DATEDIFF(DAY, -1, DATEADD(DAY, -1, DATEADD(QUARTER, DATEDIFF(QUARTER, 0, [Date]) + 1, 0)))))
          WHEN 'year'    THEN DATEADD(s, -1, DATEADD(hour, 0, DATEDIFF(DAY, -1, DATEADD(DAY, -1, DATEADD(YEAR,    DATEDIFF(YEAR,    0, [Date]) + 1, 0)))))
        END,
        TotalActive,
        TotalAdded,
        TotalRemoved
      FROM TrendReport P
      WHERE [Date] BETWEEN @DateStart AND @DateEnd
    ) s
    GROUP BY
      PeriodStart,
      PeriodEnd
    ORDER BY PeriodStart

END
Share

Leave an answer

You must login to add an answer.

Need An Account,

1 Answer

  1. Editorial Team

    You actually need to first apply UNPIVOT to rotate the three quantity types from columns to rows and then apply PIVOT to rotate the period start date to columns and aggregate the quantities.

    Here’s the thing with using the PIVOT operator though, you need to know what columns you will have ahead of time (03-01-2011, 03-08-2011, 03-15-2011), it will need hard coded into the query (unless you want to get down and dirty with dynamic sql, which i would read up on before using in production)

    Here is the solution:

    WITH CTE AS (
    SELECT
      PeriodStart,
      PeriodEnd,
      SUM(TotalActive) As TotalActive,
      SUM(TotalAdded) As TotalAdded,
      SUM(TotalRemoved) As TotalRemoved
    FROM (
      SELECT
        PeriodStart = CASE @Frequency
          WHEN 'day'     THEN DATEADD(hour, 0, DATEDIFF(DAY, 0, [Date]))
          WHEN 'week'    THEN DATEADD(hour, 0, DATEDIFF(DAY, 0, DATEADD(DAY, 1 - DATEPART(WEEKDAY, [Date]), [Date])))
          WHEN 'month'   THEN DATEADD(hour, 0, DATEDIFF(DAY, 0, DATEADD(MONTH,   DATEDIFF(MONTH,   0, [Date]), 0)))
          WHEN 'quarter' THEN DATEADD(hour, 0, DATEDIFF(DAY, 0, DATEADD(QUARTER, DATEDIFF(QUARTER, 0, [Date]), 0)))
          WHEN 'year'    THEN DATEADD(hour, 0, DATEDIFF(DAY, 0, DATEADD(YEAR,    DATEDIFF(YEAR,    0, [Date]), 0)))
        END,
        PeriodEnd   = CASE @Frequency
          WHEN 'day'     THEN DATEADD(s, -1, DATEADD(day, 1, DATEDIFF(DAY, 0, [Date])))
          WHEN 'week'    THEN DATEADD(s, -1, DATEADD(hour, 0, DATEDIFF(DAY, -1, DATEADD(DAY, 7 - DATEPART(WEEKDAY, [Date]), [Date]))))
          WHEN 'month'   THEN DATEADD(s, -1, DATEADD(hour, 0, DATEDIFF(DAY, -1, DATEADD(DAY, -1, DATEADD(MONTH,   DATEDIFF(MONTH,   0, [Date]) + 1, 0)))))
          WHEN 'quarter' THEN DATEADD(s, -1, DATEADD(hour, 0, DATEDIFF(DAY, -1, DATEADD(DAY, -1, DATEADD(QUARTER, DATEDIFF(QUARTER, 0, [Date]) + 1, 0)))))
          WHEN 'year'    THEN DATEADD(s, -1, DATEADD(hour, 0, DATEDIFF(DAY, -1, DATEADD(DAY, -1, DATEADD(YEAR,    DATEDIFF(YEAR,    0, [Date]) + 1, 0)))))
        END,
        TotalActive,
        TotalAdded,
        TotalRemoved
      FROM TrendReport P
      WHERE [Date] BETWEEN @DateStart AND @DateEnd
    ) s
    GROUP BY
      PeriodStart,
      PeriodEnd
    ORDER BY PeriodStart

), U AS (
    SELECT qty_type, PeriodStart, qty
    FROM CTE
    UNPIVOT(qty FOR qty_type IN([TotalActive], [TotalAdded], [TotalRemoved]))Q
)     
SELECT * FROM U 
PIVOT (SUM(Qty) FOR PeriodStart IN([03/01/2011], [03/08/2011], [03/15/2011])) AS P
    • 0