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General Tech Bugs & Fixes 2 years ago
Posted on 16 Aug 2022, this text provides information on Bugs & Fixes related to General Tech. Please note that while accuracy is prioritized, the data presented might not be entirely correct or up-to-date. This information is offered for general knowledge and informational purposes only, and should not be considered as a substitute for professional advice.
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I have a table:
table votes ( id, user, email, address, primary key(id), );
Now I want to make the columns user, email, address unique (together).
How do I do this in MySql?
I have a MySQL table:
CREATE TABLE `content_html` ( `id` int(11) NOT NULL AUTO_INCREMENT, `id_box_elements` int(11) DEFAULT NULL, `id_router` int(11) DEFAULT NULL, `content` mediumtext COLLATE utf8_czech_ci NOT NULL, PRIMARY KEY (`id`), UNIQUE KEY `id_box_elements` (`id_box_elements`,`id_router`) );
and the UNIQUE KEY works just as expected, it allows multiple NULL rows of id_box_elements and id_router.
I am running MySQL 5.1.42, so probably there was some update on the issue discussed above. Fortunately it works and hopefully it will stay that way.
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