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Force read of a dbf
Message
De
28/01/2016 03:29:46
Lutz Scheffler
Lutz Scheffler Software Ingenieurbüro
Dresden, Allemagne
 
 
À
28/01/2016 03:25:38
Information générale
Forum:
Visual FoxPro
Catégorie:
Base de données, Tables, Vues, Index et syntaxe SQL
Versions des environnements
Visual FoxPro:
VFP 9 SP2
OS:
Windows 8.1
Network:
SAMBA Server
Database:
Visual FoxPro
Application:
Desktop
Divers
Thread ID:
01630339
Message ID:
01630342
Vues:
74
>>How to force read of a DBF?
>>
>>I have a dbf in concurent use.
>>
>>This is, a record is changed.
>>I try to TABLEUPDATE, this fails due to a field changed. This is intended.
>>If I set the field wo the right value TABLEUPDATE still fails. A SELECT will bring right result.
>>
>>The only way to force right result right now is to close the dbf and let TABLEUPDATE reopen it.
>>
>>Any idea aside USE IN SELECT(cALIAS) to force the dbf to refresh?
>
>FLOCK() / RLOCK() should do it.
>
>My understanding is, by design, those are the ONLY ways you can be guaranteed to get the currently persisted values.

Whats more ugly:
xLOCK() or USÉ IN xx -> USE xx

IOW the locks interact with other process using the table. Will USE be better in that sense? It's a rare case, I can do with reopen it ..
Words are given to man to enable him to conceal his true feelings.
Charles Maurice de Talleyrand-Périgord

Weeks of programming can save you hours of planning.

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