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Level extraction
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31/10/2000 14:53:24
Christian Cote
Les Logiciels Onoma Inc.
Longueuil, Québec, Canada
 
 
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Forum:
Visual FoxPro
Catégorie:
Base de données, Tables, Vues, Index et syntaxe SQL
Titre:
Level extraction
Divers
Thread ID:
00436488
Message ID:
00436488
Vues:
51
HI, lets say I have tow tables :
Item :

Field Field Name Type Width Dec Index Collate Nulls
1 ITEM Character 50 Asc Machine No
2 COST Integer 4 No

Bom :

Field Field Name Type Width Dec Index Collate Nulls
1 ITEMPARENT Character 50 No
2 ITEM Character 50 No
3 QUANTITY Integer 4 No

I have a query definition that is working well in Access but not in VFP.
SELECT Item.Item
FROM Item LEFT JOIN BOM ON Item.Item = BOM.ItemParent
WHERE ((BOM.ItemParent) Is Null)
GROUP BY Item.Item;

In Access I get the result "E", "F" and "G". But in VFP, nothing. Why is that ?

Thank tou,
Christian
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