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Serious Serious
Reported By: Christian Sanggaard
Reported On: 8/26/2009
For: Version 4.28 Build 5
# 3040 BLOB Fields Can Appear Non-NULL When They Are Really NULL With Remote Sessions

I've discovered that DBISAM TBlobField.IsNull method return False, even when the field is empty.

tblEmployee.Open;
tblEmployee.Append;
tblemployeeNo.AsString := '0000000999';
tblEmployeeName.AsString := 'Test';
// Now the blob field Is Null
s := tblEmployeeComments.AsString;
// Here something happens.
// Now IsNull return false



Resolution Resolution
Fixed Problem on 9/4/2009 in version 4.29 build 1


Products Affected Products Affected
DBISAM Additional Software and Utilities
DBISAM CLX Client-Server
DBISAM CLX Client-Server with Source
DBISAM CLX Standard
DBISAM CLX Standard with Source
DBISAM ODBC Client-Server
DBISAM ODBC Client-Server with Source
DBISAM ODBC Standard
DBISAM ODBC Standard with Source
DBISAM ODBC Trial
DBISAM VCL Client-Server
DBISAM VCL Client-Server with Source
DBISAM VCL Standard
DBISAM VCL Standard with Source
DBISAM VCL Trial

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