Click here to Skip to main content
12,500,761 members (81,482 online)

--CELKO-- - Professional Profile


Joe Celko was a member of the ANSI X3H2 Database Standards Committee from 1987 to 1997 and helped write the ANSI/ISO SQL-89 and SQL-92 standards. He is considered one of the top people in the SQL/RDBMS field and has become the spelling correction for his own name on Google. He has over 35 years of experience in IT in many fields and applications.

He has had several regular monthly or biweekly columns in the past eleven years in the computer trade and academic press. His current columns are: "CELKO" in INTELLIGENT ENTERPRISE magazine (Miller-Freeman) and a series in BMC Software's website magazine.

Mr. Celko's past columns include: "SQL Explorer" in DBMS (Miller-Freeman); "Celko on SQL" in DATABASE PROGRAMMING & DESIGN (Miller-Freeman); "WATCOM SQL Corner" in POWERBUILDER DEVELOPERS' JOURNAL (SysCon); "SQL Puzzle" in BOXES & ARROWS (Frank Sweet Publishing); "DBMS/Report" in SYSTEMS INTEGRATION (Cahner-Ziff); "Data Desk" in TECH SPECIALIST (R&D); "Data Points" in PC TECHNIQUES (Coriolis Group); "Celko on Software" in COMPUTING (VNC Publications, UK) and was editor for the "Puzzles & Problems" section of ABACUS (Springer-Verlag) and he ran the CASEFORUM section 18, "Celko on SQL", on CompuServe. He has over 750 publication credits.

He is the author of five books: SQL FOR SMARTIES (Morgan-Kaufmann, 1995, second edition 1999), INSTANT SQL (Wrox Press,1995), SQL PUZZLES & ANSWERS (Morgan-Kaufmann, 1997), DATA & DATABASES (Morgan-Kaufmann, 1999), and TREES & HIERARCHIES IN SQL (2004). He is currently doing a sixth book for O'Reilly publishers.

He has also been a regular speaker and SQL instructor for commercial and trade group seminars.


For more information on Reputation please see the FAQ.


Members need to achieve at least one of the given member levels in the given reputation categories in order to perform a given action. For example, to store personal files in your account area you will need to achieve Platinum level in either the Author or Authority category. The "If Owner" column means that owners of an item automatically have the privilege, and the given member types also gain the privilege regardless of their reputation level.

ActionAuthorAuthorityDebatorEditorEnquirerOrganiserParticipantIf OwnerMember Types
Have no restrictions on voting frequencysilversilversilversilverAdmin
Store personal files in your account areaplatinumplatinumSitebuilder, Subeditor, Supporter, Editor, Staff
Have live hyperlinks in your biographybronzebronzebronzebronzebronzebronzesilverSubeditor, Protector, Editor, Staff, Admin
Edit a Question in Q&AsilversilversilversilverYesSubeditor, Protector, Editor, Admin
Edit an Answer in Q&AsilversilversilversilverYesSubeditor, Protector, Editor, Admin
Delete a Question in Q&AYesSubeditor, Protector, Editor, Admin
Delete an Answer in Q&AYesSubeditor, Protector, Editor, Admin
Report an ArticlesilversilversilversilverSubeditor, Mentor, Protector, Editor, Staff, Admin
Approve/Disapprove a pending ArticlegoldgoldgoldgoldSubeditor, Mentor, Protector, Editor, Staff, Admin
Edit other members' articlesSubeditor, Protector, Editor, Admin
Create an article without requiring moderationplatinumSubeditor, Mentor, Protector, Editor, Staff, Admin
Approve/Disapprove a pending QuestionProtector, Admin
Approve/Disapprove a pending AnswerProtector, Admin
Report a forum messagesilversilverbronzeProtector, Editor, Admin
Approve/Disapprove a pending Forum MessageProtector, Admin
Create a new tagsilversilversilversilverAdmin
Modify a tagsilversilversilversilverAdmin

Actions with a green tick can be performed by this member.

Advertise | Privacy | Mobile
Web02 | 2.8.160919.1 | Last Updated 24 Sep 2016
Copyright © CodeProject, 1999-2016
All Rights Reserved. Terms of Service
Layout: fixed | fluid