Can't update a sql-table with a space

Question

Hello,
In a transaktion I'm getting some Values from a SAP-ERP System via JCO.
I update a sql-table with this values with a sql-query command.
But sometimes the values I get from SAP-ERP are empty (space) and I'm not able to update the sql-table because of a null-value exception. (The column doesn't allow null-values). It seems that MII thinks null and space are the same.
I tried to something like this when passing the value to the sql-query parameter but it didn't work:
stringif( Repeater_Result.Output{/item/SCHGT} == "X", "X", " ")
stringif( Repeater_Result.Output{/item/SCHGT} == "X", "X", " ")
this works but I don't want to have a "_"
stringif( Repeater_Result.Output{/item/SCHGT} == "X", "X", "_")
Any suggestions?
thank you.
Matthias

Answer 1

The problem is Oracle doesn't know the space function. But it knows a similar function: NVL --> replaces a null value with something else. So this statement works fine for me:
update marc set
LGort = '[Param.3]',
dispo = '[Param.4]',
schgt = NVL('[Param.5]', ' '),
dismm = '[Param.6]',
sobsl = NVL('[Param.7]',' '),
fevor = '[Param.8]'
where matnr = '[Param.1]' and werks = '[Param.2]'
If Param.5 or Param.7 is null Oracle replaces it with a space in every other case it is the parameter itself.
Christian, thank you for your hint with the space function. So I remembered the NVL-function.
Regards
Matthias