Violating the SQL standard (IMHO) was the least disruptive of these three options. So Oracle was basically left with the options of breaking existing code, violating the SQL standard, or introducing some sort of initialization parameter that would change the functionality of potentially large number of queries. By the time that the SQL standard came around and agreed that NULL and the empty string were distinct entities, there were already Oracle users that had code that assumed the two were equivalent. all of which constitute some sense of NULL). Opinions are my own.One should NEVER treat "BLANK" and NULL as the same.īack in the olden days before there was a SQL standard, Oracle made the design decision that empty strings in VARCHAR/ VARCHAR2 columns were NULL and that there was only one sense of NULL (there are relational theorists that would differentiate between data that has never been prompted for, data where the answer exists but is not known by the user, data where there is no answer, etc. Use those practices that best benefit your needs and goals. Your particular goals and needs may vary. The majority, if not all, of the examples provided, are performed on a personal development/learning workstation-environment and should not be considered production quality or ready. They are not the utmost best solution(s). Among those, he shares a love of tabletop RPG games, reading fantasy novels, and spending time with his wife and two daughters.ĭisclaimer: The examples presented in this post are hypothetical ideas of how to achieve similar types of results. Other favorite activities find him with his nose buried in a good book, article, or the Linux command line. Josh Otwell has a passion to study and grow as a SQL Developer and blogger. To receive email notifications (Never Spam) from this blog (“Digital Owl’s Prose”) for the latest blog posts as they are published, please subscribe (of your own volition) by clicking the ‘Click To Subscribe!’ button in the sidebar on the homepage! (Feel free at any time to review the Digital Owl’s Prose Privacy Policy Page for any questions you may have about: email updates, opt-in, opt-out, contact forms, etc…)īe sure and visit the “Best Of” page for a collection of my best blog posts. Visit the Portfolio-Projects page to see blog post/technical writing I have completed for clients. Please share your findings here, with someone else you know who would get the same value out of it as well. I truly hope you discovered something interesting and enlightening. Thank you for taking the time to read this post. Like what you have read? See anything incorrect? Please comment below and thank you for reading!!! A Call To Action!
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