Home/ Questions/Q 4270764
In Process

The Archive Base Latest Questions

Editorial Team
  • 0
Asked: 2026-05-21T07:21:02+00:00

I am working on a routing system for a transportation type similar to a

  • 0

I am working on a routing system for a transportation type similar to a bus routing system like below.
I have a view that gives me the output. I need to pivot over schedules where the number of schedules can be of a variable quantity.

My query should result in the output given below in the image. I tried using Case Statements but I had problems with the number of rows returned.

Here are the scripts to generate the table and the data for reference:

IF NOT EXISTS (SELECT * FROM sys.objects WHERE object_id = OBJECT_ID(N'[dbo].[ScheduleTest]') AND type in (N'U'))
BEGIN
CREATE TABLE [dbo].[ScheduleTest](
[StationName] [nvarchar](255) NULL,
[ScheduleNumber] [nvarchar](255) NULL,
[ArrivalTime] [nvarchar](20) NULL,
[DepartureTime] [nvarchar](20) NULL
) ON [PRIMARY]
END
GO
  

--Insert Scripts For Schedule A
Insert into ScheduleTest Values ('Chicago, IL, (Union Station)', 'ScheduleA', NULL, '02:45')
Insert into ScheduleTest Values ('Chicago, IL, (DownTown)', 'ScheduleA', '02:55', '03:00')
Insert into ScheduleTest Values ('Benton, MI, Harbor', 'ScheduleA', '08:00', NULL) --Benton in this case 
--is final destination so departure time is null

-- Insert Scripts for Schedule B (Another Which runs in the morning)
Insert into ScheduleTest Values ('Chicago, IL, (Union Station)', 'ScheduleB', NULL, '06:00')
Insert into ScheduleTest Values ('Chicago, IL, (DownTown)', 'ScheduleB', '06:10', '06:15')
Insert into ScheduleTest Values ('Benton, IL, Harbor', 'ScheduleB', '11:00', NULL)

I don’t think I can use pivoting in Sql server 2005 since it needs some sort of aggregates to work on. I have nothing aggregate here.

Share

Leave an answer

You must login to add an answer.

Need An Account,

1 Answer

  1. Editorial Team

    I got it from a different source… This works and thanks to one who suggested this answer

    IF OBJECT_ID( ‘tempdb..#ScheduleTest’) IS NOT NULL
    DROP TABLE #ScheduleTest
    GO

    IF OBJECT_ID( ‘tempdb..#tmp’) IS NOT NULL
    DROP TABLE #tmp
    GO

    CREATE TABLE #ScheduleTest(
    [StationName] nvarchar NULL,
    [ScheduleNumber] nvarchar NULL,
    [ArrivalTime] nvarchar NULL,
    [DepartureTime] nvarchar NULL
    ) ON [PRIMARY]

    GO

    –Insert Scripts For Schedule A
    Insert into #ScheduleTest Values (‘Chicago, IL, (Union Station)’, ‘ScheduleA’, NULL, ’02:45′)
    Insert into #ScheduleTest Values (‘Chicago, IL, (DownTown)’, ‘ScheduleA’, ’02:55′, ’03:00′)
    Insert into #ScheduleTest Values (‘Benton, IL, Harbor’, ‘ScheduleA’, ’08:00′, NULL) –Benton in this case
    –is final destination so departure time is null

    — Insert Scripts for Schedule B (Another Which runs in the morning)
    Insert into #ScheduleTest Values (‘Chicago, IL, (Union Station)’, ‘ScheduleB’, NULL, ’06:00′)
    Insert into #ScheduleTest Values (‘Chicago, IL, (DownTown)’, ‘ScheduleB’, ’06:10′, ’06:15′)
    Insert into #ScheduleTest Values (‘Benton, IL, Harbor’, ‘ScheduleB’, ’11:00′, NULL)

    SELECT
    StationName, ScheduleNumber, ArrivalTime AS TimeOfEvent, ‘Arrival’ AS [Arrival/Departure]
    INTO #tmp
    FROM
    #ScheduleTest
    WHERE
    ArrivalTime IS NOT NULL
    UNION ALL
    SELECT
    StationName, ScheduleNumber, DepartureTime AS TimeOfEvent, ‘Departure’ AS [Arrival/Departure]
    FROM
    #ScheduleTest
    WHERE
    DepartureTime IS NOT NULL

    — Due to the aggregation requirement of pivot, Only one Schedule/Station combination is allowed.
    — This is the query for the core data. Now, to dynamic this:
    SELECT
    StationName,
    ScheduleA,
    ScheduleB,
    [Arrival/Departure]
    FROM
    #tmp AS t
    PIVOT
    ( MAX(TimeOfEvent) FOR ScheduleNumber IN ( ScheduleA, ScheduleB)
    ) AS pvt

    DECLARE @sql nVARCHAR(MAX),
    @ScheduleNumber VARCHAR(50),
    @PivotInList nVARCHAR(MAX)

    SET @sql = ‘SELECT StationName, ‘
    SET @PivotInList = ‘ IN (‘

    DECLARE ScheduleCursor CURSOR FAST_FORWARD FOR
    SELECT DISTINCT ScheduleNumber FROM #tmp

    OPEN ScheduleCursor
    FETCH NEXT FROM ScheduleCursor INTO @ScheduleNumber

    WHILE @@FETCH_STATUS = 0
    BEGIN
    SET @sql = @sql + @ScheduleNumber + ‘, ‘
    SET @PivotInList = @PivotInList + ‘ ‘ + @ScheduleNumber + ‘,’

        FETCH NEXT FROM ScheduleCursor INTO @ScheduleNumber

    END

    CLOSE ScheduleCursor
    DEALLOCATE ScheduleCursor

    SET @PivotInList = LEFT( @PivotInList, LEN( @PivotInList) – 1 /Remove the extra comma-space/) + ‘)’
    PRINT @PivotInList

    SET @sql = @sql + ‘[Arrival/Departure] FROM #tmp AS t PIVOT ( MAX( TimeOfEvent) FOR ScheduleNumber’
    + @PivotInList + ‘) AS pvt’
    PRINT @sql

    EXEC sp_executeSQL @sql

    • 0