On 25-8-2012 11:49, Mark Rotteveel wrote: > I have a question about handling NULL in XSQLVAR: > > Is it required to have sqldata set to null, or is setting sqlind to -1 > sufficient? The reason I am asking is > http://tracker.firebirdsql.org/browse/JDBC-271. > > When doing "SELECT cast(? as varchar(1)) FROM rdb$database" with the > parameter set to NULL with sqldata being non-null and sqlind = -1, the > query will return an empty string. > > If on the other hand you do > INSERT INTO single_varchar (varcharcolumn) VALUES (?) > with the same parameter data, followed by: > SELECT varcharcolumn FROM single_varchar > > you will get NULL back. > > Is Jaybird doing it wrong and/or is this a bug with parameter handling > in Firebird when the parameter is part of the select fields?
Can this be caused by http://tracker.firebirdsql.org/browse/CORE-3475? -- Mark Rotteveel ------------------------------------------------------------------------------ Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ Firebird-Devel mailing list, web interface at https://lists.sourceforge.net/lists/listinfo/firebird-devel
