Databases Reference
In-Depth Information
The following screenshot shows how we ask for a search on cinema with the LIKE
%...% operator:
The LIKE operator can be used for other types of wildcard searches, for
example History% , which would search for this word at the beginning of
a title. As the expression does not start with a wildcard character, MySQL
will try to use an index if it finds one that speeds up data retrieval. For
more details about MySQL's use of indexes, please refer to http://dev.
mysql.com/doc/refman/5.1/en/mysql-indexes.html .
Using either of these methods of performing the query produces the following results:
The % and _ wildcard characters may be repeated in a search expression; for example,
histo__ (two underscores) would match history whereas histo% would match
history and historian . The MySQL manual gives more examples at http://dev.
mysql.com/doc/refman/5.1/en/string-comparison-functions.html .
 
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