SQL查询，不包括同一列的特定值

Question

I would like to generate a project progress report which consists in pretty much checking the % of completed milestones within a given timeframe. (eg: Company A had 10 due milestones by today, but marked only 8 as completed, therefore they are progressing 20% slower than planned.)

This part easy and it is working great, however before generating it, I have a determine if a project plan is approved or not. An approved project plan is the one with milestones 1 and 2 = 100.

Below you can see the table structure I have to work with.

ID          Company     Project     Milestone   Date        Completion
170825240   Company A   Project 1   Milestone 1 29.10.12    100
170825311   Company A   Project 1   Milestone 2 29.10.12    0
170825242   Company A   Project 1   Milestone 3 05.11.12    100
170825173   Company A   Project 1   Milestone 4 17.12.12    0
170825104   Company B   Project 1   Milestone 1 29.10.12    100
170825035   Company B   Project 1   Milestone 2 29.10.12    100
170824966   Company B   Project 1   Milestone 3 05.11.12    100
170824897   Company B   Project 1   Milestone 4 17.12.12    0
170824828   Company C   Project 1   Milestone 1 29.10.12    100
170824759   Company C   Project 1   Milestone 2 29.10.12    100
170824690   Company C   Project 1   Milestone 3 05.11.12    0
170824621   Company C   Project 1   Milestone 4 17.12.12    0

In this snapshot, project 1 is approved for the companies B and C.

The issue I am facing is how to combine in a single query progress filtering the approved plans only. I would hate to write the exceptions manually, since we are talking about 1600 combinations for company and projects.

Anyone has an idea how to do it?

Thanks!!!!

UPDATED

SELECT S1.[Company], COUNT(S1.[Milestone]) AS ShouldBeMilestones

FROM Sheet1 AS S1

INNER JOIN Sheet1 S2
ON S2.[Company] = S1.[Company]
AND S2.[Project] = S1.[Project]
AND S2.[Milestone] = 'Milestone 1'
AND S2.[%compl#] = 100

INNER JOIN Sheet1 S3
ON S3.[Company] = S1.[Company]
AND S3.[Project] = S1.[Project]
AND S3.[Milestone] = 'Milestone 2'
AND S3.[%compl#] = 100

WHERE ((S1.[Task class] <> 'A') AND (S1.[Task class] <> 'B') AND (S1.[Task class] <> ''))
AND S1.[Milestone] NOT LIKE '0.*' AND S1.[Milestone] NOT LIKE '1.*'
AND S1.[Start] <= Now()

GROUP BY S1.[Company];

Answer 1

Add two where conditions, each one checking for the completion of a milestone:

from    Milestones m
where   exists
        (
        select  *
        from    Milestones m1
        where   m1.Company = m.Company
                and m1.Project = m.Project
                and m1.Milestone = 'Milestone 1'
                and m1.Completion = 100
        )
        and exists
        (
        select  *
        from    Milestones m2
        where   m2.Company = m.Company
                and m2.Project = m.Project
                and m2.Milestone = 'Milestone 2'
                and m2.Completion = 100
        )

Answer 2

this is also possible with joins borrowing from the previous answer ;)

select m.* 
(from    Milestones m
inner join Milesones as m1 
      on m1.Company = m.Company
      and m1.Project = m.Project
      and m1.Milestone = 'Milestone 1'
      and m1.Completion = 100)
inner join Milestones as m2
        on m2.Company = m.Company
                and m2.Project = m.Project
                and m2.Milestone = 'Milestone 2'
                and m2.Completion = 100

edit should adress some ms access issues but cant test it on access honestly i don't see the benefit of the () around the first join