improve performance of querying studygroup proposals in the according widget, fixes #6363

Closes #6363

Merge request studip/studip!4826

1 files changed, 59 insertions, 0 deletions

diff --git a/db/migrations/6.0.54_add_keys_for_studygroup_proposals.php b/db/migrations/6.0.54_add_keys_for_studygroup_proposals.php
new file mode 100644
index 0000000..11bae6f
--- /dev/null
+++ b/db/migrations/6.0.54_add_keys_for_studygroup_proposals.php
@@ -0,0 +1,59 @@
+<?php
+/**
+ * @see https://gitlab.studip.de/studip/studip/-/issues/6363
+ */
+final class AddKeysForStudygroupProposals extends Migration
+{
+    public function description()
+    {
+        return 'Add keys for the studygroup proposals query in MyStudygroupsController';
+    }
+
+    protected function up()
+    {
+        $query = "ALTER TABLE `seminare`
+                  DROP INDEX `status`,
+                  ADD INDEX `status_mkdate_seminar` (`status`, `mkdate`, `seminar_id`)";
+        DBManager::get()->exec($query);
+
+        $query = "ALTER TABLE `mvv_stg_stgteil`
+                  DROP INDEX `stgteil_id`,
+                  ADD INDEX `stgteil_studiengang` (`stgteil_id`, `studiengang_id`)";
+        DBManager::get()->exec($query);
+
+        $query = "ALTER TABLE `mvv_stgteil`
+                  DROP INDEX `fach_id`,
+                  ADD INDEX `fach_stgteil` (`fach_id`, `stgteil_id`)";
+        DBManager::get()->exec($query);
+
+        $query = "ALTER TABLE `studygroup_stgteil`
+                  DROP INDEX `studygroup_id_2`,
+                  DROP INDEX `stgteil_id`,
+                  ADD INDEX `stgteil_studygroup` (`stgteil_id`, `studygroup_id`)";
+        DBManager::get()->exec($query);
+    }
+
+    protected function down()
+    {
+        $query = "ALTER TABLE `studygroup_stgteil`
+                  DROP INDEX `stgteil_studygroup`,
+                  ADD INDEX `stgteil_id` (`stgteil_id`),
+                  ADD INDEX `studygroup_id_2` (`studygroup_id`)";
+        DBManager::get()->exec($query);
+
+        $query = "ALTER TABLE `mvv_stgteil`
+                  DROP INDEX `fach_stgteil`,
+                  ADD INDEX `fach_id` (`fach_id`)";
+        DBManager::get()->exec($query);
+
+        $query = "ALTER TABLE `mvv_stg_stgteil`
+                  DROP INDEX `stgteil_studiengang`,
+                  ADD INDEX `stgteil_id` (`stgteil_id`)";
+        DBManager::get()->exec($query);
+
+        $query = "ALTER TABLE `seminare`
+                  DROP INDEX `status_mkdate_seminar`,
+                  ADD INDEX `status` (`status`)";
+        DBManager::get()->exec($query);
+    }
+}