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Order of retrieved records in any SQL Engine
Message
De
23/02/2005 11:25:23
 
Information générale
Forum:
Visual FoxPro
Catégorie:
Codage, syntaxe et commandes
Divers
Thread ID:
00989667
Message ID:
00989668
Vues:
33
What are you using for the Primary Key? If you use an autoinc integer, it'll give you what you need. You could also use a date/time stamp.


>We are in the process of converting our systems from VFP databases to SQL databases using VFP for the user interface. Of course we won't be limited to one SQL engine. We are debating if we need to add a sequence number to many of our tables to ensure the order of the retrieved records. It appears that when retrieving records from MySQL that the result record set, when retrieving on one identical key (such as invoice number), is in the same order that the records (such as invoice lines) were inserted. Is this a standard? Can I assume that this is true for other SQL engines or do we need to add a sequence number to be sure of the order?
>TIA
Craig Berntson
MCSD, Microsoft .Net MVP, Grape City Community Influencer
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