ALLOCATE DESCRIPTOR — allocate an SQL descriptor area
ALLOCATE DESCRIPTOR name
ALLOCATE DESCRIPTOR allocates a new named SQL
descriptor area, which can be used to exchange data between the
PostgreSQL server and the host program.
Descriptor areas should be freed after use using
the DEALLOCATE DESCRIPTOR command.
name #A name of SQL descriptor, case sensitive. This can be an SQL identifier or a host variable.
EXEC SQL ALLOCATE DESCRIPTOR mydesc;
ALLOCATE DESCRIPTOR is specified in the SQL
standard.