I do a mysql query as below update table set something = something where onecolumn in ("a","b",etc); It works well when the array ("a","b",etc) after in is less than 1000, but when the array ("a","b",etc) contains more than 1000 element, it seem the command doesn't work. I am not sure whether there is a limitation for array's elements or it is a bug. Xinkun Wang Research Assistant Northampton Square Information Science Dept London,UK EC1V 0HB City University TEL: 0044-20-74778380 --------------------------------------------------------------------- Before posting, please check: http://www.mysql.com/manual.php (the manual) http://lists.mysql.com/ (the list archive) To request this thread, e-mail <[EMAIL PROTECTED]> To unsubscribe, e-mail <[EMAIL PROTECTED]> Trouble unsubscribing? Try: http://lists.mysql.com/php/unsubscribe.php