She also manages the site and can be reached at 345.678.9999 She can be reached at (123) 456-7890 and her email address is or ' ) INSERT INTO notes (description ) VALUES ( ' John ' ' s email address is Priscilla manages the site. We'll just focus on their use in PostgreSQL, though these lessonsĬREATE TABLE notes (note_id serial primary key, description text ) The problem with regular expressions is that they are slightly different depending on what language environment you are Makes that much easier than any other DBMS we can think of.įor more details on using regular expressions in PostgreSQL, check out the manual pages Pattern Matching in PostgreSQL Embrace the power of domain languages and mix it up. When you mix the two domain languages, you can do enchanting things with a flip of a wrist that You can use them in SQL statements, domain definitions and check constraints. You have them in PostgreSQL as well where In ASP.NET validators and javascript for checking correctness of input. You see it in sed, grep, perl, PHP, Python, VB.NET, C#, Just like SQL they are embedded in many places. Regular expressions are a domain language just like SQL. Why write 20 lines of code when you can write 1. There are many places where regular expressions can be used to reduce a 20 line piece of code into aġ liner. Every programmer should embrace and use regular expressions (INCLUDING Database programmers).
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