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Passing NULL and receiving a value from stored procedure
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From
18/01/2006 10:25:01
 
 
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General information
Forum:
Visual FoxPro
Category:
Client/server
Title:
Passing NULL and receiving a value from stored procedure
Environment versions
Visual FoxPro:
VFP 8 SP1
OS:
Windows XP SP2
Network:
Windows 2003 Server
Database:
MS SQL Server
Miscellaneous
Thread ID:
01087987
Message ID:
01087987
Views:
98
Hello all,

With VFP 8 and SQL Server 2005 CTP:

I need to pass a null value from VFP to call a SQL Server SP, but this parameter is declared as OUTPUT, and in fact, it must return a specific value.

Let's assume this VFP code:
lcVar = .NULL.
lnExec = SQLEXEC(lnH, 'Exec sp_test ?@lcVar')
When testing lnExec < 0, the error message is:
1526 Connectivity error Microsoft][ODBC SQL Server Driver] Invalid character value for cast specification

Is there any error in this logic? or any additional syntax required?

The argument is declared like this:
@cState char(7)=NULL OUTPUT


The stored procedured runs without errors from SQL Query analizer and it accepts the null value, but I keep receiving the error message when trying from VFP.

Thanks for any comment.

Juan C.
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