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How can varchar(max) cause this issue?
Message
De
04/09/2010 03:46:11
 
 
Information générale
Forum:
Visual FoxPro
Catégorie:
Autre
Versions des environnements
Visual FoxPro:
VFP 9 SP1
Divers
Thread ID:
01479846
Message ID:
01480123
Vues:
60
>Hi,
>
>I have come across the following problem, which duplicated in multiple tests.
>
>First a little background for those who have not seen my other thread. In order to update Identity column in the cursor created with a CursorAdapter I use the following method. I have the following code in the BeforeInsert method of the CA:
>
>
> cInsertCmd = cInsertCmd + ;  
>	        "; DECLARE @id int; SELECT @id = SCOPE_IDENTITY()" + ;  
>	        "; EXEC Get_identity_Value @id, ?@" + ;  
>	        this.Alias + "." + ALLTRIM(this.IDENTITY_FIELD) 
>
>
>The above code is suppose to set value of the identity column to the value of scope_identity(). And it work UNLESS one of the columns where entry is made is of type VARCHAR(MAX) NULL. That is, if I leave the editbox control empty and let SQL Server set NULL as the value in the VARCHAR(MAX) column, the above code sets the value to the identity column in the cursor to the identity value from the SQL Server. But if I make any entry into the editbox control, the value in the identity column of the cursor is 0 (zero).
>
>What could be happening here? TIA.

post LIST STRUCTURE of the vfp cursor
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