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20/02/2017 06:42:59
 
 
À
20/02/2017 06:24:57
Information générale
Forum:
Visual FoxPro
Catégorie:
Base de données, Tables, Vues, Index et syntaxe SQL
Titre:
Versions des environnements
Visual FoxPro:
VFP 9
OS:
Windows 7
Network:
Windows XP
Database:
Visual FoxPro
Application:
Desktop
Divers
Thread ID:
01648180
Message ID:
01648184
Vues:
49
>Sir I have these codes
>
>
>	CREATE CURSOR table1 (id int,names c(10),date d,qty int)
>	INSERT INTO table1 VALUES (1,"ADMIN",{^2017-02-19},25)
>	INSERT INTO table1 VALUES (1,"ADMIN",{^2017-02-20},21)
>	
>	INSERT INTO table1 VALUES (2,"GENERAL",{^2017-02-17},29)
>	INSERT INTO table1 VALUES (2,"GENERAL",{^2017-02-21},14)
>	
>	SELECT id,MAX(names),MAX(date),MAX(qty)from table1 GROUP BY id
>
>	brow
>
>
>it show these wrong result
>
>1 ADMIN 2/20/2017 25
>2 GENERAL 2/21/2017 29
>
>But I need this
>
>1 ADMIN 2/19/2017 25
>2 GENERAL 2/17/2017 29
>
>The date that has greater qty
>
>Later on I want to use these codes in SQLSERVER 2008
>

Thierry's given you the answer for VFP. In SQL Server 2012 and later, the OVER clause with LAST_VALUE gives you a better way to do this. I explain it in this paper: http://www.tomorrowssolutionsllc.com/Conference%20Sessions/Going%20OVER%20and%20above%20with%20SQL.pdf

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