Lutz,

The following Format ‘yyyy-MM-dd’ should work.

Select CAST( LEFT( '20140814',4) ||'-'|| substring('20140814' from 5 for 2) ||'-'||RIGHT('20140814',2) as DATE) from RDB$DATABASE

In the past I had some obstacles converting datetime values from another source to the latest Firebird DB.

FireBird’s Dialect 1 will store the Date & Time value in one field of data type “DATE”.  Using Dialect 3, the Data Type “DATE” only stores the Date part of the value. You would need to parse it and store the Time part of the field to a field of Data Type TIME, or use the TIMESTAMP data Type which handles the Date & Time.

Thanks,

Ed Mendez