Find all nodes with a mixin type 'mix:title' and whose property 'jcr:title' starts with 'P%ri'.

As you see "P%rison break" contains the symbol '%'. This symbol is reserved for LIKE comparisons. So what can we do?

Within the LIKE pattern, literal instances of percent ("%") or underscore ("_") must be escaped. The SQL ESCAPE clause allows the definition of an arbitrary escape character within the context of a single LIKE statement. The following example defines the backslash ' \' as escape character:

SELECT * FROM mytype WHERE a LIKE 'foo\%' ESCAPE '\'

XPath does not have any specification for defining escape symbols, so we must use the default escape character (' \').