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Count probleme
Message
Information générale
Forum:
Visual FoxPro
Catégorie:
Codage, syntaxe et commandes
Titre:
Divers
Thread ID:
01237077
Message ID:
01237278
Vues:
14
This message has been marked as the solution to the initial question of the thread.
Hi Bernhart,

Your data doesn't have record order info in it which makes it impossible to achive what you want with UPDATE-SQL command. If you add column that defines data order than it becames simple
CREATE CURSOR CmdMedic ( pk I autoinc, cNom C(20) , nGroup I )
INSERT INTO CmdMedic ( cNom ) VALUES ( 'Temesta 2.5' )  	&& I want 1 For ngroup
INSERT INTO CmdMedic ( cNom ) VALUES ( 'Aspirine' ) 		&& I want 1 For ngroup
INSERT INTO CmdMedic ( cNom ) VALUES ( 'Temesta 2.5' ) 		&& I want 2 For ngroup
INSERT INTO CmdMedic ( cNom ) VALUES ( 'Fluimycyl' ) 		&& I want 1 For ngroup
INSERT INTO CmdMedic ( cNom ) VALUES ( 'Rofenid' )			&& I want 1 For ngroup
INSERT INTO CmdMedic ( cNom ) VALUES ( 'Temesta 2.5' )		&& I want 3 For ngroup

UPDATE CmdMedic SET nGroup = (SELECT COUNT(*) FROM CmdMedic cm2 ;
		WHERE cm2.cNom = CmdMedic.cNom AND cm2.pk < CmdMedic .pk) + 1
>
>I have a count probleme.
>
>
> CREATE CURSOR CmdMedic ( cNom C(20) , nGroup I )
>
>
>  INSERT INTO CmdMedic ( cNom ) VALUES ( 'Temesta 2.5' )  && I want 1 For ngroup
>  INSERT INTO CmdMedic ( cNom ) VALUES ( 'Aspirine' ) && I want 1 For ngroup
>  INSERT INTO CmdMedic ( cNom ) VALUES ( 'Temesta 2.5' ) && I want 2 For ngroup
>  INSERT INTO CmdMedic ( cNom ) VALUES ( 'Fluimycyl' ) && I want 1 For ngroup
>  INSERT INTO CmdMedic ( cNom ) VALUES ( 'Rofenid' )&& I want 1 For ngroup
>INSERT INTO CmdMedic ( cNom ) VALUES ( 'Temesta 2.5' )&& I want 3 For ngroup
>
>*-- etc...
>
>UPDATE ngroup = ???? From CmdMedic
>
>
>How find nGroup with Update Command ?
>
--sb--
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