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17/04/2005 02:23:35
 
 
Information générale
Forum:
Visual FoxPro
Catégorie:
Base de données, Tables, Vues, Index et syntaxe SQL
Titre:
Divers
Thread ID:
01005535
Message ID:
01005544
Vues:
17
>VFP 9. Have a row of house sales with four columns. The fields are listed below. Sales year and month are character fields. I want all four columns returned for the most recent sale for each unique houseid.
>
>Table Fields
>houseid, sales month, sales year, sale amount,
>
>Thanks
>
>Brenda

How about???
SELECT houseid,MAX(sales_year + sales_month) AS mo;
 FROM myTable;
 GROUP BY 1;
 INTO CURSOR curTemp

SELECT myTable.*;
 FROM myTable,curTemp;
 WHERE myTable.houseid = curTemp.houseid;
   AND myTable.sales_year + myTable.sales_month = curTemp.mo
Bear in mind that if you have multiple records for a year/month combination, you will get multiple rows returned in the final result.
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