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Evolution of regular expressions

Posted by sqlmdx on July 2, 2016

Frankly speaking “evoulution” is not quite proper word to title this post.
I’m going to show some extensions in regular expressions in different languages in compare to their implementation in Oracle.

Oracle supports regular expressions according to POSIX standard draft 1003.2/D11.2 and two extensions

  • matching capabilities for multilingual data
  • some commonly used PERL regular expression operators (for example, character class shortcuts and the nongreedy modifier “?”)

Let’s consider quizzes which cannot be easily resolved using built-in capabilities in Oracle.
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