MySQL update select,update的同时select和for update语句_MySQL

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MySQL update select,update的同时select和for update语句

MySQL update && select

CREATE TABLE `testupdate` (

`id` bigint(20) NOT NULL AUTO_INCREMENT,

`val` bigint(20) NOT NULL DEFAULT '0',

PRIMARY KEY (`id`)

) ENGINE=InnoDB AUTO_INCREMENT=2 DEFAULT CHARSET=utf8

update testupdate

set val = val+1

where id = 1 and @value := val+1;

select @value;

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