(Resolvido) Query - Agrupamento e ordenação

[Fernandinha]

Olá pessoal...

Estou com uma dúvida:

Tenho uma tabela e preciso retornar todos os campos porém com a maior data de evidencia.

Tenho essa tabela

IdTurmaPQ DataAula Frequencia DtCadastro DtEvidencia

11162 2011-08-01 00:00:00.000 Presente 2011-09-22 00:00:00.000 2011-09-01 11:08:53.407

11162 2011-08-01 00:00:00.000 Justificada 2011-09-22 00:00:00.000 2011-09-22 10:14:02.750

11162 2011-08-02 00:00:00.000 Presente 2011-09-21 00:00:00.000 2011-08-31 16:41:26.983

11162 2011-08-03 00:00:00.000 Presente 2011-09-21 00:00:00.000 2011-08-31 16:42:30.983

11162 2011-08-04 00:00:00.000 Presente 2011-09-22 00:00:00.000 2011-08-31 16:50:39.877

11162 2011-08-05 00:00:00.000 Ausente 2011-09-22 00:00:00.000 2011-08-31 16:53:04.077

11162 2011-08-05 00:00:00.000 Justificada 2011-09-22 00:00:00.000 2011-09-22 09:54:39.267

11162 2011-08-08 00:00:00.000 Ausente 2011-08-31 00:00:00.000 NULL

11162 2011-08-09 00:00:00.000 Ausente 2011-08-31 00:00:00.000 NULL

11162 2011-08-10 00:00:00.000 Ausente 2011-08-31 00:00:00.000 NULL

11162 2011-08-11 00:00:00.000 Presente 2011-09-22 00:00:00.000 2011-08-31 20:00:08.217

11162 2011-08-12 00:00:00.000 Ausente 2011-08-31 00:00:00.000 NULL

11162 2011-08-13 00:00:00.000 Ausente 2011-09-21 00:00:00.000 NULL

11162 2011-08-14 00:00:00.000 Justificada 2011-09-22 00:00:00.000 NULL

11162 2011-08-15 00:00:00.000 Justificada 2011-09-22 00:00:00.000 NULL

Meu retorno tem que ser exatamente esse:

IdTurmaPQ DataAula Frequencia DtCadastro DtEvidencia

11162 2011-08-01 00:00:00.000 Justificada 2011-09-22 00:00:00.000 2011-09-22 10:14:02.750

11162 2011-08-02 00:00:00.000 Presente 2011-09-21 00:00:00.000 2011-08-31 16:41:26.983

11162 2011-08-03 00:00:00.000 Presente 2011-09-21 00:00:00.000 2011-08-31 16:42:30.983

11162 2011-08-04 00:00:00.000 Presente 2011-09-22 00:00:00.000 2011-08-31 16:50:39.877

11162 2011-08-05 00:00:00.000 Justificada 2011-09-22 00:00:00.000 2011-09-22 09:54:39.267

11162 2011-08-08 00:00:00.000 Ausente 2011-08-31 00:00:00.000 NULL

11162 2011-08-09 00:00:00.000 Ausente 2011-08-31 00:00:00.000 NULL

11162 2011-08-10 00:00:00.000 Ausente 2011-08-31 00:00:00.000 NULL

11162 2011-08-11 00:00:00.000 Presente 2011-09-22 00:00:00.000 2011-08-31 20:00:08.217

11162 2011-08-12 00:00:00.000 Ausente 2011-08-31 00:00:00.000 NULL

11162 2011-08-13 00:00:00.000 Ausente 2011-09-21 00:00:00.000 NULL

11162 2011-08-14 00:00:00.000 Justificada 2011-09-22 00:00:00.000 NULL

11162 2011-08-15 00:00:00.000 Justificada 2011-09-22 00:00:00.000 NULL

Fiz um SELECT DISTINCT mas não funciona pelo fato das linhas não serem identicas...

Desde já agradeço a ajuda...

Edited September 23, 2011 by Fernandinha

[fulvio]

Boa tarde Fernandinha,

Poderá utilizar o "max" da DtEvidencia e o "group by" e "Order by" por DataAula.

[Fernandinha]

Eu utilizei o Max e o Group By, porém só me retornou a linha que contem a data maior de evidencia e tem linhas que não tem data de evidencia que eu preciso que retorne também.

[Fernandinha]

Olá, segue a resolução do meu problema, caso alguém precise...

select * from Tabela as t

where

(t.DtEvidencia is null) or

(t.DtEvidencia in

(select max(DtEvidencia) from Tabela

where

(IdTurmaPQ = t.IdTurmaPQ) and

(DataAula = t.DataAula)))

[fulvio]

Bom dia Fernandinha,

Segue exemplo:

CREATE TABLE #Teste (IdTurmaPQ INT,DataAula DATETIME,Frequencia VARCHAR(20),DtCadastro DATETIME,DtEvidencia DATETIME)

INSERT INTO #teste VALUES (11162,'2011-08-01 00:00:00.000','Presente','2011-09-22 00:00:00.000','2011-09-01 11:08:53.407')
INSERT INTO #teste VALUES (11162,'2011-08-01 00:00:00.000','Justificada','2011-09-22 00:00:00.000','2011-09-22 10:14:02.750')
INSERT INTO #teste VALUES (11162,'2011-08-02 00:00:00.000','Presente','2011-09-21 00:00:00.000','2011-08-31 16:41:26.983')
INSERT INTO #teste VALUES (11162 ,'2011-08-03 00:00:00.000','Presente','2011-09-21 00:00:00.000','2011-08-31 16:42:30.983')
INSERT INTO #teste VALUES (11162 ,'2011-08-04 00:00:00.000','Presente','2011-09-22 00:00:00.000','2011-08-31 16:50:39.877')
INSERT INTO #teste VALUES (11162 ,'2011-08-05 00:00:00.000','Ausente','2011-09-22 00:00:00.000','2011-08-31 16:53:04.077')
INSERT INTO #teste VALUES (11162 ,'2011-08-05 00:00:00.000','Justificada','2011-09-22 00:00:00.000','2011-09-22 09:54:39.267')
INSERT INTO #teste VALUES (11162 ,'2011-08-08 00:00:00.000','Ausente','2011-08-31 00:00:00.000',NULL)
INSERT INTO #teste VALUES (11162 ,'2011-08-09 00:00:00.000','Ausente','2011-08-31 00:00:00.000', NULL)
INSERT INTO #teste VALUES (11162 ,'2011-08-10 00:00:00.000','Ausente','2011-08-31 00:00:00.000', NULL)
INSERT INTO #teste VALUES (11162 ,'2011-08-11 00:00:00.000','Presente','2011-09-22 00:00:00.000','2011-08-31 20:00:08.217')
INSERT INTO #teste VALUES (11162 ,'2011-08-12 00:00:00.000','Ausente','2011-08-31 00:00:00.000',NULL)
INSERT INTO #teste VALUES (11162 ,'2011-08-13 00:00:00.000','Ausente','2011-09-21 00:00:00.000',NULL)
INSERT INTO #teste VALUES (11162 ,'2011-08-14 00:00:00.000','Justificada','2011-09-22 00:00:00.000', NULL)
INSERT INTO #teste VALUES (11162 ,'2011-08-15 00:00:00.000','Justificada','2011-09-22 00:00:00.000', NULL)


SELECT DataAula, max(DtEvidencia)
FROM #Teste GROUP BY DataAula ORDER BY DataAula