More than MAX_JOIN_SIZE rows error

Question

Hie Guys,
I am getting the following error message - "The SELECT would examine more than MAX_JOIN_SIZE rows; check your WHERE and use SET_BIG_SELECTS=1 or SET MAX_JOIN_SIZE=# if the SELECT is okayState", while parsing objects in UDT 4.1.
The Universe is based on derived tables from a MySQL database. I get the same error message when I Check Syntax for the derived tables. The Universe was working fine before, but all of a sudden I am getting this error. I do not get any errors in the DEV Server. Could anyone please help me identify and resolve this issue? I've attached the snapshot below.

Answer 1

Hi...
I think error is not related to BO, I suspect it’s related to SQL.
Please check the below workaround was to hardcode it in drupal core :
Mentioned in the below link :
https://drupal.org/node/361967
Go to folder /includes, and find the file : database.mysql.inc
Edit the file :Find this:
/* On MySQL 4.1 and later, force UTF-8 */
if (version_compare(mysql_get_server_info(), '4.1.0', '>=')) {
mysql_query('SET NAMES "utf8"', $connection);
return $connection;
and add mysql_query('SET SQL_BIG_SELECTS=1 '); so in the end it should look like this :
/* On MySQL 4.1 and later, force UTF-8 */
if (version_compare(mysql_get_server_info(), '4.1.0', '>=')) {
mysql_query('SET NAMES "utf8"', $connection);
mysql_query('SET SQL_BIG_SELECTS=1 ');
return $connection;
https://drupal.org/node/361967
Also please check the below links.
https://drupal.org/node/1378010
http://coderecho.com/the-select-would-examine-more-than-max_join_size-rows/
https://bugs.launchpad.net/mahara/+bug/1070046