Plateforme Level Extreme
Abonnement
Profil corporatif
Produits & Services
Support
Légal
English
SQL to normalize the data!
Message
De
21/07/1999 12:57:24
 
 
À
20/07/1999 22:22:21
Information générale
Forum:
Visual FoxPro
Catégorie:
Base de données, Tables, Vues, Index et syntaxe SQL
Divers
Thread ID:
00243953
Message ID:
00244229
Vues:
20
As John said, you have more of a cross-tab than a fully normalized table. But I understand that that wasn't you point. You can do this with a query if the types of coins is fixed:

SELECT studentid, studname,
SUM(IIF(coins = '1', qty, 0)) AS 1_Dollar,
SUM(IIF(coins = '2', qty, 0)) AS 2_Dollar,
SUM(IIF(coins = '5', qty, 0)) AS 5_Dollar,
SUM(IIF(coins = '10', qty, 0)) AS 10_Dollar
FROM badtable
GROUP BY studentid, studname
ORDER BY studentid

-Mike

>One friend ask me how to convert the non-normalize dbf to standard!
>
>
>badtable:
>
>StudentID    StudName    Coins      Qty
>-----------------------------------------
>PJ00001      May         5_Dollar    10
>PJ00001      May         2_Dollar     4
>PJ00002      John        10_Dollar    6
>PJ00002      John        2_Dollar     5
>PJ00002      John        1_Dollar     3
>PJ00003      Peter       5_Dollar     7
>PJ00003      Peter       1_Dollar    15
>PJ00004      Susan       10_Dollar    2
>PJ00004      Susan       5_Dollar     1
>...
>
>
>GoodTable:
>
>StudentID    StudName    1_Dollar  2_Dollar  5_Dollar  10_Dollar
>-----------------------------------------------------------------
>PJ00001      May            0         4         10         0
>PJ00002      John           3         5          0         6
>PJ00003      Peter         15         0          7         0
>PJ00004      Susan          0         0          1         2
>........
>
>
>
>
>For Report, simply use group can do it, but how to change the table
>into this structure na!?
>
>Thanks!
Michael Levy
MCSD, MCDBA
ma_levy@hotmail.com
Précédent
Suivant
Répondre
Fil
Voir

Click here to load this message in the networking platform