LIKE and SIMILAR TO Predicates
The LIKE predicate is a simple string pattern-matching test with the syntax:
The expression M NOT LIKE P is equivalent to NOT (M LIKE P), which follows the usual syntax pattern in SQL. There are two wildcards allowed in the <pattern> string. They are the ‘%’ and ‘_’ characters. The ‘_’ character represents a single arbitrary character; the ‘%’ character represents an arbitrary substring, possibly of length zero. Notice that there is no way to represent zero or one arbitrary character. ...
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