MS ACCESS database broken into month [duplicate]

问题

This question already has an answer here:

Pivoting data in MS Access (1 answer)

Closed 4 years ago.

Back again with an issue that has been bugging me for sometime now. Here's my dilemma. I have a table looks like this

| ID |   DATE         |  SALES |
  1     2012-01-20      100.45
  1     2012-01-22       55.45
  1     2012-02-15       66.77
  3     2012-01-19       33.33  
  3     2012-02-19       69.44
  4     2012-02-22       77.55
  etc

So what i need to do is make a new table with all the ID grouped in one, and then adding their sales in the month range (i.e 2012-01-01 to 2012-01-30)

The new table would looke like this

ID    |   01-2012    |   02-2012   |  03-2012 | etc | etc
1     |   155.90     |     66.77   |
3     |  33.33       |     69.44   |
4     | 000.00       |    77.55    |

All the recoods need to display even if they sum up to none

any input or help is much appreciated! Thank you internet!

回答1:

You can pivot data by using Transform command.

TRANSFORM SUM(SALES)
SELECT ID, FORMAT([DATE], 'yyyy-MM')
FROM YourTableName
WHERE [DATE] BETWEEN #Date1# AND #Date2#
GROUP BY ID, FORMAT([DATE], 'yyyy-MM')

Replace Date1 and Date2 with proper dates (in ISO format: MM/dd/yyyy).

By The Way: never use reserved words as a column name!

See: SQL Reserved Words

来源：https://stackoverflow.com/questions/27951872/ms-access-database-broken-into-month