andrew, Monday, October 21, 2002, 8:53:15 PM, you wrote: aatdc> Description: aatdc> When attempting to select rows periodically (as in scheduling) the aatdc> INTERVAL function will round the parts of an expression before doing aatdc> the calculation of the expression. For example:
aatdc> now() - INTERVAL 0.1*60 MINUTE == now() aatdc> The correct result would be a difference of six minutes! While aatdc> this can be corrected if manually entering values, if the 0.1 in aatdc> the above example comes from a table column you cannot. Yes, the aatdc> system could have been designed to operate in non-fractional minutes aatdc> but hours were more convenient. aatdc> How-To-Repeat: aatdc> select now(), now() - interval (0.1*60) minute; aatdc> Fix: aatdc> Perhaps change the order of operations within the INTERVAL processing aatdc> so that a fractional formula is calculated BEFORE rounding the values aatdc> in the formula. I tested your example on 4.0.4 and it works well: mysql> select now(), now()- interval (0.1*60) minute; +---------------------+---------------------------------+ | now() | now()- interval (0.1*60) minute | +---------------------+---------------------------------+ | 2002-10-22 14:25:08 | 2002-10-22 14:19:08 | +---------------------+---------------------------------+ 1 row in set (0.00 sec) -- For technical support contracts, goto https://order.mysql.com/?ref=ensita This email is sponsored by Ensita.net http://www.ensita.net/ __ ___ ___ ____ __ / |/ /_ __/ __/ __ \/ / Victoria Reznichenko / /|_/ / // /\ \/ /_/ / /__ [EMAIL PROTECTED] /_/ /_/\_, /___/\___\_\___/ MySQL AB / Ensita.net <___/ www.mysql.com --------------------------------------------------------------------- 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
