5. Working with QBF Operations : QBF Retrieve Operation : Search Qualifications : Pattern-Matching Characters
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Pattern-Matching Characters
For further qualification of queries, you can perform pattern matching with wild card characters. Wild card characters are symbols that represent unspecified character values.
In QBF, the asterisk (*) and the question mark (?) are the default wild card characters. Pattern-matching characters cannot be used in fields with numeric data types.
As explained in The % and _ Pattern Matching Characters, you can specify that your system use the % and _ character in place of ? and *.