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Oracle support for regular expressions has been around since version 10g Release 1. However it's common to find developers that aren't aware of this powerful functionality.
Oracle SQL support for regular expressions lets application developers implement complex pattern-matching logic in the database, which is useful for these reasons:
By centralizing pattern-matching logic in the database, you avoid intensive string processing of SQL results sets by middle-tier applications.
By using server-side regular expressions to enforce constraints, you avoid duplicating validation logic on multiple clients.
In this session we'll talk about common used operators, pattern matching conditions and functions provided by Oracle.
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