Rules for CCSIDs of host variables in SQL statements

CCSIDs must be considered when you assign one character or graphic value to another. This includes the assignment of host variables. The database manager uses a common set of system services for converting SBCS data, DBCS data, MIXED data, and graphic data.

The rules for CCSIDs are as follows:

If the CCSID of the source matches the CCSID of the target, the value is assigned without conversion.
If the sub-type for the source or target is BIT, the value is assigned without conversion.
If the value is either null or an empty string, the value is assigned without conversion.
If conversion is not defined between specific CCSIDs, the value is not assigned and an error message is issued.
If conversion is defined and needed, the source value is converted to the CCSID of the target before the assignment is performed.