Lets you run a query on multiple catalogs
DELIMITER $$ DROP PROCEDURE IF EXISTS `mysql`.`batchexec`$$ CREATE PROCEDURE `mysql`.`batchexec`() BEGIN DECLARE catalog varchar(255); DECLARE done INT DEFAULT 0; DECLARE curs CURSOR FOR select db from mysql.proc where `name` = "page_get_pagesbyids" limit 100; DECLARE CONTINUE HANDLER FOR SQLSTATE '02000' SET done = 1; open curs; repeat fetch curs into catalog; if not done then begin SET @sql = CONCAT( "select count(*) from `", catalog, "`.pages into @pagecount" ); PREPARE STMT FROM @sql; EXECUTE STMT; set @sql = CONCAT( "select count(*) from `", catalog, "`.users into @usercount" ); PREPARE STMT FROM @sql; EXECUTE STMT; select catalog, @pagecount, @usercount; end; end if; until done end repeat; close curs; END$$ DELIMITER ;
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