A special register is a storage area that is defined for an application process by
Db2 and is used to store information that
can be referenced in SQL statements. A reference to a special register is a reference to a value
provided by the current server. If the value is a string, its CCSID is a default CCSID of the
current server.
The special registers can be referenced as follows:
Notes:
1 The SQL standard uses the form with the underline.