sql 常用的mysql指令

Posted 2021-05-13

## Insert New Field
ALTER TABLE [table name] ADD `field` varchar(x) COLLATE utf8_bin NOT NULL;
ALTER TABLE [table name] ADD `field` varchar(x) COLLATE utf8_bin DEFAULT "";

## Create Table
CREATE TABLE `sssssss` (
        `id` bigint(18) unsigned NOT NULL AUTO_INCREMENT,
        `create_millis` bigint(18) NOT NULL,
        PRIMARY KEY (`id`),
        FOREIGN KEY (`xxxx`) REFERENCES aaaaa (`id`) 
) ENGINE=InnoDB DEFAULT CHARSET=utf8 COLLATE=utf8_bin;



update table SET a="1" where key="1";