How do I achieve a pivot report in Crystal Reports for Visual Studio?

问题

I am a rank noob at any reporting but horizontal lines with sub-totals. I have a dataset that comprises the times spent by cars in a carpark. I must produce a table showing a column for each hour and a row for each day, showing the number of entries at a particular time on a particular day.

I would find this easier in the RDLC designer, with it's columnar groupings, but I can't even find such a thing in Crystal.

Help.

回答1:

Assuming the following fields: {table.car_id} and {table.census_time}

Choose Insert | Crosstab...; add cross-tab to report-header section

Right click the cross-tab and chose 'cross tab expert':

Add {table.census_time] to the column-field list; group by hour
Add {table.census_time} to the row-field list; group by day
Add {table.car_id} to the summary-field list; count

** edit **

You don't need to create a special formula to extract the hour from the date/time field; the cross-tab will do that for you.

Select the 'Cross-Tab' tab, add the {table.census_time} field, then click the 'Group Options...' button.

Choose 'for each hour.' from the picklist.

回答2:

You need to create a table with a record for each hour:

Table DayHour

Period             StartHour        EndHour
00:00 - 01:00      0                 1
01:00 - 02:00      1                 2
02:00 - 03:00      2                 3
03:00 - 04:00      3                 4
...
23:00 - 00:00      23                24

Then left join your data with this table

SELECT h.Period, DATEPART(dd,d.EntryTime) as Day, 1 as Value
FROM DayHour h LEFT JOIN <YourData> d ON h.StartHour <=DATEPART(hh,d.EntryTime) and DATEPART(hh,d.EntryTime)<h.EndHour

This will return all the record with the time period and will return even a record if no vehicles entered the parking during a specific time frame. Drag and drop the Period column to the column section of the cross tab and Day column to the Rows sections. Drag Value column to the summary section.

来源：https://stackoverflow.com/questions/17667913/how-do-i-achieve-a-pivot-report-in-crystal-reports-for-visual-studio

标签

crystal-reports

reporting

crosstab