CODEWITHSUNDEEP
sqlsql-servert-sql
Luis Lara
Luis Lara

Reputation: 75

SELECT MAX DATE FROM MULTIPLE DATES

this is my case:

I have 2 tables SKU & Disco_Dates.

In both tables there is a similar field.

SKU.[MFG_PART_NUMBER] = Disco_Dates.[MATERIAL]

I need to know the max DATE_UPDATE available for each MFG_PART_NUMBER

DISCO_DATE TABLE

+-------------+-----------------------+-----------------------+
| MATERIAL    |DISCO_DATE             | DATE_UPDATE           | 
+-------------+-----------------------+-----------------------+
|T6C25AW#ABC  |NULL                   |2016-09-14 11:15:03.587|
|T6C25AW#ABC  |2016-10-28 00:00:00.000|2016-09-21 13:45:03.591| 
|T6C25AW#ABC  |2016-10-31 00:00:00.000|2016-09-30 12:38:08.990| 
+-------------+-----------------------+-----------------------+

SKU TABLE

+---------------+
|MFG_PART_NUMBER| 
+---------------+
|T6C25AW#ABC    |
|G2F32UC#ABC    |
+---------------+

SQL QUERY

SELECT
 t1.[MFG_PART_NUMBER]
,t2.[DISCO_DATE]
,MAX (t2.[DATE_UPDATE]) as DATE_UPDATE

FROM Test.dbo.SKU t1

LEFT JOIN Test.dbo.Tbl_Disco_Dates t2
ON [MFG_PART_NUMBER] = [MATERIAL]

WHERE t1.[MFG_PART_NUMBER] = 'T6C25AW#ABC'

group by 
  t1.[MFG_PART_NUMBER]
 ,t2.[DISCO_DATE]

My current result is giving me all 3 rows.

This is what I need.

+----------------+-----------------------+-----------------------+
|MFG_PART_NUMBER |DISCO_DATE             | DATE_UPDATE           |  
+----------------+-----------------------+-----------------------+
|T6C25AW#ABC     |2016-10-31 00:00:00.000|2016-09-30 12:38:08.990| 
+----------------+-----------------------+-----------------------+

Thanks in advance.

Upvotes: 0

Views: 4516

Answers (3)

Wildan Maulana Syahidillah
Wildan Maulana Syahidillah

Reputation: 914

Try this:

SELECT
 t1.[MFG_PART_NUMBER]
,t2.[DISCO_DATE]
,t2.[DATE_UPDATE] as DATE_UPDATE

FROM Test.dbo.SKU t1

LEFT JOIN Test.dbo.Tbl_Disco_Dates t2
ON [MFG_PART_NUMBER] = [MATERIAL]

WHERE t1.[MFG_PART_NUMBER] = 'T6C25AW#ABC'
      AND t2.[DATE_UPDATE] = (SELECT MAX(t2.[DATE_UPDATE] FROM Test.dbo.Tbl_Disco_Dates t2)

Upvotes: 2

this.hart
this.hart

Reputation: 328

 declare @maxdate datetime
 select @maxdate = max(t2.[DATE_UPDATE]) FROM Test.dbo.SKU
 select * from ( SELECT
  t1.[MFG_PART_NUMBER]
 ,t2.[DISCO_DATE]
  , DATE_UPDATE

  FROM Test.dbo.SKU  where DATE_UPDATE=   @maxdate)   t1 
  LEFT JOIN Test.dbo.Tbl_Disco_Dates t2
   ON t1.[MFG_PART_NUMBER] = t2.[MATERIAL]

  WHERE t1.[MFG_PART_NUMBER] = 'T6C25AW#ABC'

  group by 
 t1.[MFG_PART_NUMBER]
 ,t2.[DISCO_DATE]

Upvotes: 2

Tim Biegeleisen
Tim Biegeleisen

Reputation: 522732

Wouldn't a simple GROUP BY query work:

SELECT MATERIAL,
       MAX(DISCO_DATE) AS DISCO_DATE,
       MAX(DATE_UPDATE) AS DATE_UPDATE
FROM Test.dbo.Tbl_Disco_Dates
GROUP BY MATERIAL

Upvotes: 1

Related Questions