Level Extreme platform
Subscription
Corporate profile
Products & Services
Support
Legal
Français
Table without PK - do I need one for View?
Message
From
25/10/2001 10:53:00
Cetin Basoz
Engineerica Inc.
Izmir, Turkey
 
General information
Forum:
Visual FoxPro
Category:
Databases,Tables, Views, Indexing and SQL syntax
Miscellaneous
Thread ID:
00573010
Message ID:
00573199
Views:
28
>>Nadya,
>>
>>You don't need a PK for an updatable view. Just tag all of the compsite key fields as the key in the view designer. Of course, a PK puts less strain on the database engine and reduces the size of the WHERE clause.
>>
>>- Keith
>
>Keith,
>
>The problem is: one field in Integer and two other fields are character. Will it work? I want to discuss the possibiities with my manager. One quick related question: Append from doesn't update PK (if it has default value set), right? So, I had to re-write all code to use scan insert endscan instead, if I choose PK route...
>

You wouldn't create a concatanation just mark them as keyfields.
If PK has a defult value and you don't pass it a value it would update from default.
OTOH I couldn't understand why you ever need a view for a single table when it's local (actually never understood why someone might need it).
Cetin
Çetin Basöz

The way to Go
Flutter - For mobile, web and desktop.
World's most advanced open source relational database.
.Net for foxheads - Blog (main)
FoxSharp - Blog (mirror)
Welcome to FoxyClasses

LinqPad - C#,VB,F#,SQL,eSQL ... scratchpad
Previous
Next
Reply
Map
View

Click here to load this message in the networking platform