问题
I have a table looks like:
Field1 Field2 Blank Fail Pass Date
a 1 0 20 40 170101
a 2 1 19 99 170101
b 1 0 54 24 170101
c 3 1 24 30 170101
a 1 0 11 19 170102
b 2 0 21 266 170102
a 1 2 10 40 170103
....
The user then chooses the date range they want to display and I want my result to look like:
Field1 Field2 0101_B 0101_F 0101_P 0102_B 0102_F 0102_P 0103_B 0103_F 0103_P
a 1 0 20 40 0 11 19 2 10 40
a 2 1 19 99
b 1 0 54 24
c 3 1 24 30
b 2 0 21 266
Any help really appreciated!
回答1:
Options:
a UNION query as the source for a CROSSTAB - Parameters really should reference controls on a form.
PARAMETERS StartDate Long, EndDate Long; TRANSFORM Sum(Q.Data) AS SumOfData SELECT Q.Field1, Q.Field2, Q.Yr FROM (SELECT Field1, Field2, Blank AS Data, "B" AS Source, [Date], Mid([Date],3) & "_B" AS MonDayCat, Int(Left([Date],2)) AS Yr FROM Table1 UNION SELECT Field1, Field2, Pass, "P", [Date], Mid([Date],3) & "_P", Int(Left([Date],2)) AS Yr FROM Table1 UNION SELECT Field1, Field2, Fail, "F", [Date], Mid([Date],3) & "_F", Int(Left([Date],2)) AS Yr FROM Table1) AS Q WHERE (((Q.Date) Between [StartDate] And [EndDate])) GROUP BY Q.Field1, Q.Field2, Q.Yr PIVOT Q.MonDayCat;three CROSSTAB queries then join the CROSSTABS
review http://allenbrowne.com/ser-67.html#MultipleValues
VBA procedure writing records to a 'temp' table
None of these options will allow a full year of data if there is data for every day - 2.5 months at most. Building a stable report to run perpetually based on CROSSTAB is not easy. Review http://allenbrowne.com/ser-67.html#ColHead.
来源：https://stackoverflow.com/questions/48027329/transform-and-pivot-in-ms-access