Column invalid in the select list because it is not contained in either an aggregate function or the GROUP BY clause

Question

We have a table which will capture the swipe record of each employee. I am trying to write a query to fetch the list of distinct employee record by the first swipe for today.

We are saving the swipe date info in datetime column. Here is my query its throwing exception.

 select distinct 
    [employee number], [Employee First Name]
    ,[Employee Last Name]
    ,min([DateTime])
    ,[Card Number]
    ,[Reader Name]
    ,[Status]
    ,[Location] 
from 
    [Interface].[dbo].[VwEmpSwipeDetail] 
group by  
    [employee number] 
where 
    [datetime] = CURDATE();

Getting error:

Column 'Interface.dbo.VwEmpSwipeDetail.Employee First Name' is invalid in the select list because it is not contained in either an aggregate function or the GROUP BY clause.

Any help please?

Thanks in advance.

Answer 1

The error says it all:

...Employee First Name' is invalid in the select list because it is not contained in either an aggregate function or the GROUP BY clause

Saying that, there are other columns that need attention too.

Either reduce the columns returned to only those needed or include the columns in your GROUP BY clause or add aggregate functions (MIN/MAX). Also, your WHERE clause should be placed before the GROUP BY.

Try:

select   distinct [employee number]
      ,[Employee First Name]
      ,[Employee Last Name]
      ,min([DateTime])
      ,[Card Number]
      ,min([Reader Name])
from [Interface].[dbo].[VwEmpSwipeDetail] 
where CAST([datetime] AS DATE)=CAST(GETDATE() AS DATE)
group by  [employee number], [Employee First Name], [Employee Last Name], [Card Number]

I've removed status and location as this is likely to return non-distinct values. In order to return this data, you may need a subquery (or CTE) that first gets the unique IDs of the SwipeDetails table, and from this list you can join on to the other data, something like:

SELECT [employee number],[Employee First Name],[Employee Last Name].. -- other columns
FROM [YOUR_TABLE]
WHERE SwipeDetailID IN (SELECT MIN(SwipeDetailsId) as SwipeId
                        FROM SwipeDetailTable
                        WHERE CAST([datetime] AS DATE)=CAST(GETDATE() AS DATE)
                        GROUP BY [employee number])

Answer 2

Please Try Below Query :

select   distinct [employee number],[Employee First Name]
          ,[Employee Last Name]
          ,min([DateTime])
          ,[Card Number]
          ,[Reader Name]
          ,[Status]
          ,[Location] from [Interface].[dbo].[VwEmpSwipeDetail] group by [employee number],[Employee First Name]
          ,[Employee Last Name]
          ,[Card Number]
          ,[Reader Name]
          ,[Status]
          ,[Location] having [datetime]=GetDate();