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15/04/2016 11:53:52
 
 
À
15/04/2016 10:33:18
Lutz Scheffler
Lutz Scheffler Software Ingenieurbüro
Dresden, Allemagne
Information générale
Forum:
Visual FoxPro
Catégorie:
Codage, syntaxe et commandes
Titre:
Versions des environnements
Visual FoxPro:
VFP 9 SP2
OS:
Windows 10
Database:
Visual FoxPro
Application:
Desktop
Divers
Thread ID:
01634840
Message ID:
01634842
Vues:
59
>>Hello all,
>>
>>I have a cursor generated by a bunch of SQL subqueries. The data in that cursor is primary keys.
>>
>>I want to be able to select three records in another cursor for each primary keys that are a part of that cursor.
>>
>>So Cursor with primary keys looks like this
>>
>>12354
>>3456
>>23
>>
>>Result that I would like to have
>>
>>12354 Whatever1
>>12354 Whatever2
>>12354 Whatever3
>>3456 Something1
>>3456 Something2
>>3456 Something3
>>23 Other1
>>23 Other2
>>23 Other3
>>
>>Can this be done with a SQL construct?
>
>Hi Denis,
>
>the cheapest way without brain squeezing:
>
>create cursor curhelp (i1 I)
>append blank
>append blank
>append blank
>
>select;
> cur1.*,;
> Cur2.i1;
> from yourcursor as Cur1;
> inner join curhelp as Cur2;
>  on .t.;
> into cursor curTarget
>
>use in curhelp
>
It really looks like brain squeezing will be needed in this case :-)

Thanks for the suggestion. Interesting solution but let me tell you more. In fact I should've given you more information to begin with. My bad.

So like I said original cursor cursor contains primary keys.

From that cursor I need to search for dates that are in another cursor. I need to get the most recent dates. Let's say 3 most recent dates.

Cursor EmployeeId
Contains primary keys for the employees that need to be searched.
One field only : Primary key

Cursor WasHere
Contains all the dates the employees were here.
Field could be : EmployeeId and DateEmployeeWasHere (format for date is YMD)


Content of cursor EmployeeId
124
52

Content of cursor WasHere

124 2015/01/01
124 2014/01/01
124 2013/01/01
124 2016/01/01
52 2015/02/02
52 2014/02/02
52 2013/02/02
52 2016/02/02

The result that I want is :

124 2016/01/01
124 2015/01/01
124 2014/01/01
52 2016/02/02
52 2015/02/02
52 2014/02/02
*******************************************************
Save a tree, eat a beaver.
Denis Chassé
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