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Trent’s Blog » Exploring Various SQL RegEx Syntax
This is part two of my quest to Incorporating Regex into ORM’s and Database Abstractions . My first steps to exploring the option to implement uniform regex support into my own database orm/abstraction is to compare the syntax of the more popular database systems. To do so I will build an sql query where possible to search the body of page contents for ‘bla bla bla..’ in a test database table. The REGEXP operator is a special syntax for the regexp() user function. No regexp() user function is defined by default and so use of the REGEXP operator will normally result in an error message. If a user-defined function named “regexp” is added at run-time, that function will be called in order to implement the REGEXP operator.The JRegex is compact and efficient regular expression library for Java. It provides support for full perl5.6 regex syntax and is compliant with unicode.org 's regex guidelines. Besides that, jregex supports named groups (existing in Python regexes but neither in perl nor in other java libs), and incomplete matching , which is hardly found elsewhere.
http://jregex.sourceforge.net/
JRegexpTester - Welcome
About JRegexpTester is a standalone Swing application that helps you test regular expressions with the Sun Java standard API (java.util.regex). The extracted data can be modified with formatters similar to those used by sprintf, or with standard Java date and decimal formatters. It features RegExLib library integration with more than 900 patterns.
Welcome to RegExLib.com , the Internet's first Regular Expression Library. Currently we have indexed 3373 expressions from 1973 contributors around the world. We hope you'll find this site useful and come back whenever you need help writing an expression, you're looking for an expression for a particular task, or are ready to contribute new expressions you’ve just figured out. Thanks! The Regex Coach The Regex Coach is a graphical application for Linux and Windows which can be used to experiment with (Perl-compatible) regular expressions interactively.
Regular Expression Library
A regular expression (regex or regexp for short) is a special text string for describing a search pattern. You can think of regular expressions as wildcards on steroids. You are probably familiar with wildcard notations such as *.txt to find all text files in a file manager.