Kettle / Spoon: Converting string to boolean

En Kettle / Spoon hay que habilitar el soporte para boolean si queremos introducir con éxito este campo en una tabla postgresql

 

In recent Kettle versions, you would have to check the «enable boolean support» option in the database connection dialog OR convert the Boolean to an Integer data type. Usually these Boolean SQL data types are integers anyway.

 

fuente: http://forums.pentaho.com/showthread.php?74364-Converting-string-to-boolean