SUM of grouped COUNT in SQL Query

Question

I have a table with 2 fields:

ID  Name
--  -------
1   Alpha
2   Beta
3   Beta
4   Beta
5   Charlie
6   Charlie

I want to group them by name, with \'co

Answer 1

You can use ROLLUP

select nvl(name, 'SUM'), count(*)
from table
group by rollup(name)

Answer 2

The way I interpreted this question is needing the subtotal value of each group of answers. Subtotaling turns out to be very easy, using PARTITION:

SUM(COUNT(0)) OVER (PARTITION BY [Grouping]) AS [MY_TOTAL]

This is what my full SQL call looks like:

SELECT MAX(GroupName) [name], MAX(AUX2)[type],  
COUNT(0) [count], SUM(COUNT(0)) OVER(PARTITION BY GroupId) AS [total]
    FROM [MyView]
  WHERE Active=1 AND Type='APP' AND Completed=1
    AND [Date] BETWEEN '01/01/2014' AND GETDATE()
    AND Id = '5b9xxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx' AND GroupId IS NOT NULL
  GROUP BY AUX2, GroupId

The data returned from this looks like:

name    type    count   total
Training Group 2    Cancelation 1   52
Training Group 2    Completed   41  52
Training Group 2    No Show 6   52
Training Group 2    Rescheduled 4   52
Training Group 3    NULL        4   10535
Training Group 3    Cancelation 857 10535
Training Group 3    Completed   7923    10535
Training Group 3    No Show 292 10535
Training Group 3    Rescheduled 1459    10535
Training Group 4    Cancelation 2   27
Training Group 4    Completed   24  27
Training Group 4    Rescheduled 1   27

Answer 3

I am using SQL server and the following should work for you:

select cast(name as varchar(16)) as 'Name', count(name) as 'Count' from Table1 group by Name union all select 'Sum:', count(name) from Table1

Answer 4

Without specifying which rdbms you are using

Have a look at this demo

SQL Fiddle DEMO

SELECT Name, COUNT(1) as Cnt
FROM Table1
GROUP BY Name
UNION ALL
SELECT 'SUM' Name, COUNT(1)
FROM Table1

That said, I would recomend that the total be added by your presentation layer, and not by the database.

This is a bit more of a SQL SERVER Version using Summarizing Data Using ROLLUP

SQL Fiddle DEMO

SELECT CASE WHEN (GROUPING(NAME) = 1) THEN 'SUM'
            ELSE ISNULL(NAME, 'UNKNOWN')
       END Name, 
      COUNT(1) as Cnt
FROM Table1
GROUP BY NAME
WITH ROLLUP

Answer 5

all of the solution here are great but not necessarily can be implemented for old mysql servers (at least at my case). so you can use sub-queries (i think it is less complicated).

 select sum(t1.cnt) from 
        (SELECT column, COUNT(column) as cnt
            FROM
            table 
            GROUP BY 
            column
            HAVING 
            COUNT(column) > 1) as t1 ;

Answer 6

  with cttmp
  as
  (
  select Col_Name, count(*) as ctn from tab_name group by Col_Name having count(Col_Name)>1
  )
  select sum(ctn) from c