Match text against wildcard expressions in database?
Given an input string, I'd like to return the rows from a (MySQL) database that contain a wildcard expression that would match the string. For example, if I have a table containing these wildcard expressions:
foo.*
foo.bar.*
erg.foo.*
and my input string is "foo.bar.baz", then I should get the rows "foo.*" and "foo.bar.*".
Any ideas on how this can be implemen开发者_JAVA百科ted? I'm hoping it can be accomplished with a query, but I might have to select all relevant rows and do the matching in the application.
SELECT *
FROM mytable
WHERE 'foo.bar.baz' RLIKE match
You are not limited to the wildcards and can use any regular expression MySQL
supports.
However, if you only want to process asterisk wildcards, you may use this syntax:
SELECT *
FROM mytable
WHERE 'foo.bar.baz' LIKE REPLACE(REPLACE(REPLACE(REPLACE('\\', '\\\\'), '.', '\\.'), '%', '\\%'), '*', '%') ESCAPE '\\'
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