Web Reference: Oracle SQL supports some commonly used PERL regular expression operators that are not included in the POSIX standard but do not conflict with it. Table 11-5 summarizes the PERL-influenced operators that Oracle SQL supports. You can read the Oracle Regular Expression Support here. Rather than trying to repeat the formal definitions, I'll present a number of problems I've been asked to look at over the years, where a solution using a regular expression has been appropriate. The 3 video provides solutions to all the questions that we discussed in the 1st video, hopefully this will clarify all your doubts related to regular expressions #regexp #regularexpression...
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