Comments on: Oracle NVL Equivalent in MySQL http://kwatog.com/blog/mysql/oracle-nvl-equivalent-in-mysql/?utm_source=rss&utm_medium=rss&utm_campaign=oracle-nvl-equivalent-in-mysql tech notes and general nonsense Wed, 09 May 2012 08:50:40 +0000 hourly 1 http://wordpress.org/?v=3.3.2 By: admin http://kwatog.com/blog/mysql/oracle-nvl-equivalent-in-mysql/#comment-30 admin Sat, 25 Dec 2010 07:51:15 +0000 http://kwatog.com/?p=204#comment-30 thanks! I'll take note of that. thanks! I’ll take note of that.

]]> By: mpapec http://kwatog.com/blog/mysql/oracle-nvl-equivalent-in-mysql/#comment-29 mpapec Thu, 23 Dec 2010 08:08:32 +0000 http://kwatog.com/?p=204#comment-29 If you want empty string to be null as well you could use: eg. update mytable set name = ifnull(nullif('newval',''), name) where id=1 ps. also, when newval are only spaces, nullif also gives null as a result If you want empty string to be null as well you could use:

eg.
update mytable set
name = ifnull(nullif(‘newval’,”), name)
where id=1

ps. also, when newval are only spaces, nullif also gives null as a result

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