(B)0[mmissing-value =
qqq> [4mRDB$MISSING[m qqqqqqqqqqqqqqqqq>qqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqk
lqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqq<qqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqj
x
mq> ( qwq> context-var . field-name qqqqqqqqqqqqqqqwqq> ) qqq>
tq> relation-name . field-name qqqqqqqqqqqqqu
mq> db-handle . relation-name . field-name qj
1 – Format arguments
context-var A context variable. A temporary name that
you associate with a relation. You define
a context variable in a relation clause.
For more information see the entry on
Context Variables.
field-name The name of a field in a relation. For
example, once you have defined E as
the context variable for the EMPLOYEES
relation, E.LAST_NAME is a value
expression that refers to a value from
the LAST_NAME field of EMPLOYEES.
relation-name The name of a relation in the database.
db-handle Database handle. A host variable used
to refer to a specific database you have
invoked. For more information see the
entry on the Database Handle clause.