New answers tagged mysql-5.1
3
Conditions with OR are harder for the optimizer than conditions with AND only.
Two or more range conditions (>, >=, <, <=, BETWEEN, LIKE 'search%') are harder than conditions with equality only or with only one range.
Your query has both the above difficulties. Noticing that it is equivalent to this rewriting:
WHERE ( languageId = 3 AND
...
0
I think you need a third table, orders, which connects the items and persons.
Tables
CREATE TABLE IF NOT EXISTS `persons` (
`person_id` int(4) NOT NULL AUTO_INCREMENT,
`name` varchar(100) NOT NULL,
PRIMARY KEY (`person_id`)
);
CREATE TABLE IF NOT EXISTS `items` (
`item_id` int(4) NOT NULL AUTO_INCREMENT,
`item_type` varchar(50) NOT NULL,
...
0
By default, pt-table-checksum displays as result all tables even if there is no error or diffs.
If you want to display just errors and diffs you can add the --quiet to the invocation of pt-table-checksum
Print only the most important information (disables --progress). Specifying this option once causes the tool to print only errors, warnings, and tables ...
0
This seems to be one of those errors that won't go away. In this case, it may be a case of human error.
First of all, here are a series of links with similar error messages on Shutdowns
http://www.webhostingtalk.com/showthread.php?t=518682
http://bugs.mysql.com/bug.php?id=7403
http://bugs.mysql.com/bug.php?id=48879
http://lists.mysql.com/mysql/206094
...
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