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Catégorie:
Base de données, Tables, Vues, Index et syntaxe SQL
Titre:
Cannot save view created in view designer
I'm using VFP 6.0
I have a household table that has a state_id field and a city_id that are related into the states table, and city table respectively.
When i create a local view by using the view designer, it works great, but when i try to save it, I get a message "SQL: column city_id is not found", I can save this view, but cannot there after edit it. If I take off one or the other related tables (either city or states table) , all's ok. This is the SQL that it generates:
SELECT DISTINCT *;
FROM gems!household INNER JOIN gems!states;
INNER JOIN gems!city ;
ON Household.city_id = City.city_id ;
ON Household.state_id = States.state_id;
ORDER BY Household.household_id
So I tried taking off the joins and creating filters, in which case it generates "where" clauses and alls ok and i can save this.... but this not does not let me take advantage of the diff joins, if i needed to.
SELECT DISTINCT *;
FROM gems!household, gems!city, gems!states;
WHERE Household.state_id = States.state_id;
AND Household.city_id = City.city_id;
ORDER BY Household.household_id
Now, I can write these SQLs and save them, but why can't I does it not work via the view designer ???
can anyone help ?????
Thanks
Preston
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