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log_20170328 ( ?, `last_update_time` TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP COMMENT '修改时间' ) ENGINE=InnoDB DEFAULT CHARSET=utf8 ...
Attempting to rename the column will generate SQL with single quotes around 'CURRENT_TIMESTAMP', which causes it to be a static string and therefore an invalid default value for the DATETIME/TIMESTAMP ...