X-Git-Url: https://git.heureux-cyclage.org/?a=blobdiff_plain;f=includes%2Fapi%2FApiQueryLogEvents.php;h=962d9561300c0ff60f8c62e08cc9263e1a02516b;hb=3d1fb0c0443ee92531ca8e1aafbcf9b403879e44;hp=779868845ab8a87b649b6f86fc9ad1eea3226729;hpb=1e1c24d12c94a90442de5af89df393d1042a246a;p=lhc%2Fweb%2Fwiklou.git

diff --git a/includes/api/ApiQueryLogEvents.php b/includes/api/ApiQueryLogEvents.php
index 779868845a..962d956130 100644
--- a/includes/api/ApiQueryLogEvents.php
+++ b/includes/api/ApiQueryLogEvents.php
@@ -238,6 +238,14 @@ class ApiQueryLogEvents extends ApiQueryBase {
 			}
 		}
 
+		// T220999: MySQL/MariaDB (10.1.37) can sometimes irrationally decide that querying `actor` before
+		// `logging` and filesorting is somehow better than querying $limit+1 rows from `logging`.
+		// Tell it not to reorder the query. But not when `letag` was used, as it seems as likely
+		// to be harmed as helped in that case.
+		if ( $params['tag'] === null ) {
+			$this->addOption( 'STRAIGHT_JOIN' );
+		}
+
 		$count = 0;
 		$res = $this->select( __METHOD__ );
 		$result = $this->getResult();