Comments on: How Not to Create Auto Increment Columns in Oracle http://www.lifeaftercoffee.com/2006/02/17/how-not-to-create-auto-increment-columns-in-oracle/ because I don't believe in life before coffee... Wed, 28 Oct 2009 06:44:36 -0700 http://wordpress.org/?v=2.8.4 hourly 1 By: Francis F http://www.lifeaftercoffee.com/2006/02/17/how-not-to-create-auto-increment-columns-in-oracle/comment-page-1/#comment-5549 Francis F Fri, 29 Sep 2006 12:06:01 +0000 http://www.lifeaftercoffee.com/2006/02/17/how-not-to-create-auto-increment-columns-in-oracle/#comment-5549 You don't need the clumsy case statement where nvl will do nvl(max(id),0)+1 will do the trick. But you're right anyway. It will lock other users out. Thanks for the tip about currval being session bound in the other note, I always thought it was global. Sadly all of the JDBC code that allows you to do an insert and get the last ID back won't work with Oracle, to get the right effect you'd have to do a returning clause and I don't know if that's fully supported by the other databases. You don’t need the clumsy case statement where nvl will do

nvl(max(id),0)+1

will do the trick. But you’re right anyway. It will lock other users out. Thanks for the tip about currval being session bound in the other note, I always thought it was global. Sadly all of the JDBC code that allows you to do an insert and get the last ID back won’t work with Oracle, to get the right effect you’d have to do a returning clause and I don’t know if that’s fully supported by the other databases.

]]> By: BorkWeb http://www.lifeaftercoffee.com/2006/02/17/how-not-to-create-auto-increment-columns-in-oracle/comment-page-1/#comment-210 BorkWeb Mon, 20 Feb 2006 13:33:26 +0000 http://www.lifeaftercoffee.com/2006/02/17/how-not-to-create-auto-increment-columns-in-oracle/#comment-210 <strong>Oracle’s Auto Incrementing with Sequences...</strong> My previous post, titled: ‘Sequence-less/Trigger-less Oracle Auto Increment‘ was shot out of the water by my friend and DBA, Jon Emmons. Glad to see that I can be kept in line. So I have resigned to use Oracle Sequences as a safer means fo... Oracle’s Auto Incrementing with Sequences…

My previous post, titled: ‘Sequence-less/Trigger-less Oracle Auto Increment‘ was shot out of the water by my friend and DBA, Jon Emmons. Glad to see that I can be kept in line.
So I have resigned to use Oracle Sequences as a safer means fo…

]]> By: Life After Coffee » How to Create Auto Increment Columns in Oracle http://www.lifeaftercoffee.com/2006/02/17/how-not-to-create-auto-increment-columns-in-oracle/comment-page-1/#comment-206 Life After Coffee » How to Create Auto Increment Columns in Oracle Fri, 17 Feb 2006 16:28:02 +0000 http://www.lifeaftercoffee.com/2006/02/17/how-not-to-create-auto-increment-columns-in-oracle/#comment-206 [...] After pointing out how not to create auto increment columns in Oracle, I suppose I should point out how to create auto increment columns in oracle. [...] [...] After pointing out how not to create auto increment columns in Oracle, I suppose I should point out how to create auto increment columns in oracle. [...]

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