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I'm new to using triggers and really not sure how to proceed. I have an access table that a row is inserted whenever someone opens the website or downloads a file with the following structure: `ID` int(5) NOT NULL autoincrement, `LOG_TIME` datetime NOT NULL DEFAULT current_timestamp(), `IP_ADDRESS` int(64) unsigned COLLATE utf8_general_mysql500_ci NOT NULL, `FILENAME` varchar(50) COLLATE utf8_general_mysql500_ci DEFAULT NULL, `country` varchar(50) COLLATE utf8_general_mysql500_ci DEFAULT NULL, `area` varchar(50) COLLATE utf8_general_mysql500_ci DEFAULT NULL, `city` varchar(50) COLLATE utf8_general_mysql500_ci DEFAULT NULL ) ENGINE=InnoDB DEFAULT CHARSET=utf8 COLLATE=utf8_general_mysql500_ci; When the site is accessed, a row is inserted with only the first 3 fields are filled. When a file is downloaded another row is inserted with the first 4 fields filled. I want to create a trigger such that when a download row is inserted, the IP_ADDRESS is compared to another table to update the country, area, and city fields. I can currently do that for the whole table in mysql shell using the following code: UPDATE access t2, ip_lookup t1 SET t2.country = t1.country, t2.area = t1.area, t2.city = t1.city WHERE ((t2.IP_ADDRESS) BETWEEN (t1.start_ip) AND (t1.end_ip)) AND t2.FILENAME is not null and t2.country is null; How would I write an "after insert" trigger to update the last 3 fields based on the ip of the row that was inserted because of a download? Thanks in advance, Larry

I have a trigger, CREATE TRIGGER `TRIGGER_SOMETABLE_UID` BEFORE INSERT ON `SOMETABLE` FOR EACH ROW SET NEW.Uid = UUID( ) Now, I thought this would fire FOR EACH ROW, but if I'm doing an insert like this... insert into sometable ( col1, col2 ) ( select col1, col2 from SOME_OTHER_tABLE ) ... and that inserts two rows, the result is that Uid in both new rows is identical. This is not the desired behavior. Can you tell me how to get a unique Uid in each row?