Forgot to mention that all of my tables are of TYPE: MyISAM Thanks Sri
[EMAIL PROTECTED] wrote: > > Guys, > > I know that version 3.23.51 of MySQL does not handle deleting data from > multiple tables directly. I am in a situation where i have to delete > millions of records from a dozen tables. The delete logic is not simple, > i have to check a number of tables before i can actually delete a row > from a given table. All of my databases run in a 24x7 env. In order to > reduce my scheduled downtime here's what i am planning to do, ofcourse > this will be tested against the test env first. Please let me know your > feedback. I would surely appreciate to hear about any other better way > of accomplishing this task. > > 1) create temporary (not actually a TEMPORARY) tables for all the tables > to be purged using CREATE TABLE ... statement. The structure of the > table would be the same as the original table to be purged. I could have > used CREATE TABLE ... AS SELECT * FROM .... statement for creating a > temp table, but this statement does not create the indexes, PK, > auto_increment et al... > > 2) Load the data from the original purge table into the temp table based > upon my delete logic. > > 3) Drop the original purge table. > > 4) Rename the temp table that i have created to the name of the purge > table that i have dropped. > > Let me know if this sounds as a viable solution. I would sure like to > hear anything about the table locking and grant issues that i might > encounter. > > Thanks > Sri --------------------------------------------------------------------- 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
