(B)0[mmatching-clause =
qqq> value-expr qqqwqq>qqqqqqqwq> [4mMATCHING[m qqq> match-expr qqqq>
mqq> [4mNOT[m qqj
1 – Format arguments
value-expr A value expression. A symbol or a string
of symbols used to calculate a value. When
you use a value expression in a statement,
Oracle Rdb calculates the value associated
with the expression and uses that value
when executing the statement.
match-expr A match expression. An expression in
quotation marks that is used to match a
pattern. Use the double quote character
(") in C programs. Use the single quote
character (') in Pascal programs. The
match expression can include the following
special symbols (called wildcards):
o * Matches a string of zero or more
characters that maps onto its position
o % Matches a single character that maps
onto its position