How do I aggregate 3 columns that are different with MIN(DATE)? - sql

Question

I'm facing a simple problem here that I can't solve, I have this query:
SELECT
MIN(TEA_InicioTarefa),
PFJ_Id_Analista,
ATC_Id,
SRV_Id
FROM
dbo.TarefaEtapaAreaTecnica
INNER JOIN Tarefa t ON t.TRF_Id = TarefaEtapaAreaTecnica.TRF_Id
WHERE SRV_Id = 88
GROUP BY SRV_Id, ATC_Id, PFJ_Id_Analista
ORDER BY ATC_Id ASC
It returns me this:
I was able to group it a little with GROUP BY SRV_Id, ATC_Id, PFJ_Id_Analista that gave me these 8 records, but as you can see some PFJ_Id_Analista are different.
What I want is to select only the early date of each SRV_Id and ATC_Id, the PFJ_Id_Analista don't need to grup, if I remove PFJ_Id_Analista from the grouping the query works, but I need the column.
For eg.: between row number 2 and 3 I want only the early date, so it will be row 2. The same goes for rows 5 to 8, I want only row 6.
DDL for TarefaEtapaAreaTecnica (important key: TRF_Id)
CREATE TABLE [dbo].[TarefaEtapaAreaTecnica](
[TEA_Id] [int] IDENTITY(1,1) NOT NULL,
**[TRF_Id] [int] NOT NULL,**
[ETS_Id] [int] NOT NULL,
[ATC_Id] [int] NOT NULL,
[TEA_Revisao] [int] NOT NULL,
[PFJ_Id_Projetista] [int] NULL,
[TEA_DoctosQtd] [int] NULL,
[TEA_InicioTarefa] [datetime2](7) NULL,
[PFJ_Id_Analista] [int] NULL,
[TEA_FimTarefa] [datetime2](7) NULL,
[TEA_HorasQtd] [numeric](18, 1) NULL,
[TEA_NcfQtd] [int] NULL,
[PAT_Id] [int] NULL
DDL for Tarefa (important keys TRF_Id and SRV_Id (which I need it)):
CREATE TABLE [dbo].[Tarefa](
**[TRF_Id] [int] IDENTITY(1,1) NOT FOR REPLICATION NOT NULL,**
**[SRV_Id] [int] NOT NULL,**
[TRT_Id] [int] NOT NULL,
[TRF_Descr] [varchar](255) NULL,
[TRF_Entrada] [datetime] NOT NULL,
[TRF_DoctosQtd] [int] NOT NULL,
[TRF_Devolucao] [datetime] NULL,
[TRF_NcfQtd] [int] NULL,
[TRF_EhDocInsuf] [bit] NULL,
[TRF_Observ] [varchar](255) NULL,
[TRF_AreasTrfQtd] [int] NULL,
[TRF_AreasTrfLiqQtd] [int] NULL
Thanks a lot.
EDIT:
CORRECT QUERY
Based on #Gordon Linoff post:
select t.TEA_InicioTarefa, t.PFJ_Id_Analista, t.ATC_Id, t.SRV_Id
from (select t.*,
row_number() over (partition by ATC_Id, SRV_Id
order by TEA_InicioTarefa) as seqnum, ta.SRV_Id
from dbo.TarefaEtapaAreaTecnica t
inner join dbo.Tarefa ta on t.TRF_Id = ta.TRF_Id
) t
where seqnum = 1 AND t.SRV_Id = 88

Answer 1

Just use window functions:
select t.*
from (select t.*,
row_number() over (partition by ATC_Id, SRV_Id
order by ini) as seqnum
from dbo.TarefaEtapaAreaTecnica t
) t
where seqnum = 1;
This is really an example of filtering, not aggregation. The problem is getting the right value to filter on.

Answer 2

Then get the grouping first and then do a JOIN with it like
SELECT
x.Min_TEA_InicioTarefa,
t.PFJ_Id_Analista,
t.ATC_Id,
t.SRV_Id
FROM
dbo.TarefaEtapaAreaTecnica t
INNER JOIN Tarefa ta ON ta.TRF_Id = t.TRF_Id
INNER JOIN (
select SRV_Id, MIN(TEA_InicioTarefa) as Min_TEA_InicioTarefa
from dbo.TarefaEtapaAreaTecnica
GROUP BY SRV_Id
) x ON t.SRV_Id = x.SRV_Id
WHERE t.SRV_Id = 88
ORDER BY t.ATC_Id ASC;