The wchar_t and sqldbchar data types for graphic data in C and C++ embedded SQL applications
wchar_t data type depend on which compiler and
operating system you use.
The sqldbchar data type is defined by Db2 to
be 2 bytes in size, and is intended to be a portable way of manipulating
DBCS and UCS-2 data in the same format in which it is stored in the
database.
You can define all Db2 C
graphic host variable types with either the wchar_t or sqldbchar data
type. You must use the wchar_t data type if you build
your application with the WCHARTYPE CONVERT precompile
option.
If you build your application with the WCHARTYPE NOCONVERT precompile
option, you can use the sqldbchar data type for maximum
portability between different Db2 client
and server environments. You can use the wchar_t data
type with the WCHARTYPE NOCONVERT option, but only
on environments where the wchar_t data type is defined
as 2 bytes in length.
If you incorrectly use either a wchar_t or sqldbchar data
type in host variable declarations, an error can be returned during
the precompile process.