SQL Query --- counting by groups

Posted on 2014-11-10
Last Modified: 2014-11-13
I have a  table with data that looks something like this.

Project ID   DocumenID

1             1
1             2
1             3
2            4      
3             5
3            6

I need to create a sql statement that will give me a count of ALL the documents as well as ammount of documents
per project.  Any clue how?
Question by:vbnetcoder
LVL 26

Expert Comment

by:Shaun Kline
ID: 40433593
Something like:

FROM Projects

Author Comment

ID: 40433675
This is the exact query:

SELECT  P.[Project Name],   Count(DP.Document_ID) AS DocumentCount
  FROM [MyTableReports].[dbo].[Document_Project] DP
   INNER JOIN  [MyTableReports].[dbo].[Document_Files] DF
    ON DF.Document_ID = dp.Document_ID
      INNER JOIN [MyTableReports].[dbo].Project P
         ON P.ID = dp.Project_ID  
         Group By P.[Project Name]  

And it returns this:

Project Name      DocumentCount
AA Project      1
BB project      2
CC roject      2
ttttttt              1

I need it to return:

Project Name      DocumentCount  Total Documents
AA Project               1                                5
BB project               2                                5
CC roject               2                                5
ttttttt                       1                                5

LVL 47

Accepted Solution

Vitor Montalvão earned 500 total points
ID: 40434474
I don't know why you need to have the TotalDocuments in all rows since it will be always the same value but here's one solution that I personally don't like:
SELECT  P.[Project Name],   Count(DP.Document_ID) AS DocumentCount , 
           (SELECT COUNT(1) FROM [MyTableReports].[dbo].[Document_Project]) AS TotalDocuments
   FROM [MyTableReports].[dbo].[Document_Project] DP
    INNER JOIN  [MyTableReports].[dbo].[Document_Files] DF
     ON DF.Document_ID = dp.Document_ID
       INNER JOIN [MyTableReports].[dbo].Project P
          ON P.ID = dp.Project_ID  
          Group By P.[Project Name]  

Open in new window

LVL 32

Expert Comment

ID: 40438076
>>I need it to return:
Project Name      DocumentCount  Total Documents
AA Project               1                                5
BB project               2                                5
CC roject               2                                5
ttttttt                       1                                5 <<
Can you post the data that should return those results with some explanation as to why?

Author Closing Comment

ID: 40439571

Featured Post

Master Your Team's Linux and Cloud Stack!

The average business loses $13.5M per year to ineffective training (per 1,000 employees). Keep ahead of the competition and combine in-person quality with online cost and flexibility by training with Linux Academy.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

Title # Comments Views Activity
sql help 8 55
SSRS Subscription jobs disabled, yet still running 4 34
sql server insert 12 30
domain login has permission in database, but gets error 3 15
This article describes how to use the timestamp of existing data in a database to allow Tableau to calculate the prior work day instead of relying on case statements or if statements to calculate the days of the week.
Ever needed a SQL 2008 Database replicated/mirrored/log shipped on another server but you can't take the downtime inflicted by initial snapshot or disconnect while T-logs are restored or mirror applied? You can use SQL Server Initialize from Backup…
This Micro Tutorial will give you a basic overview how to record your screen with Microsoft Expression Encoder. This program is still free and open for the public to download. This will be demonstrated using Microsoft Expression Encoder 4.
Established in 1997, Technology Architects has become one of the most reputable technology solutions companies in the country. TA have been providing businesses with cost effective state-of-the-art solutions and unparalleled service that is designed…

773 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question