SQL DB plug-in not write NULL value

[jamesant]

How can I stop the SQL database plug-in from carrying out an SQL query if any of the values it needs to write is NULL ?

For example

 insert into ADatabaseT1
 values (:P1,:P2,:P3)   

if the value of P1 is NULL, I want the sql query to be skipped

[Arthur Grasin]

You need to do it with a filter plugin.

[jamesant]

I tried using the deadband filter, but found it didn't do what I needed

I solved it by changing the sql query.
It deletes the record if it wrote a null value into the Temp1 column.

 insert into ADatabaseT1
 values (:P1,:P2,:P3)   
 delete from ADatabaseT1
 where Temp1 is null