MM-41866: Adds index to UserGroups.DisplayName. (#19799)

db/migrations/mysql/000079_usergroups_displayname_index.down.sql

@@ -0,0 +1,14 @@
+SET @preparedStatement = (SELECT IF(
+    (
+        SELECT COUNT(*) FROM INFORMATION_SCHEMA.STATISTICS
+        WHERE table_name = 'UserGroups'
+        AND table_schema = DATABASE()
+        AND index_name = 'idx_usergroups_displayname'
+    ) > 0,
+    'DROP INDEX idx_usergroups_displayname ON UserGroups;',
+    'SELECT 1'
+));
+
+PREPARE removeIndexIfExists FROM @preparedStatement;
+EXECUTE removeIndexIfExists;
+DEALLOCATE PREPARE removeIndexIfExists;

db/migrations/mysql/000079_usergroups_displayname_index.up.sql

@@ -0,0 +1,14 @@
+SET @preparedStatement = (SELECT IF(
+    (
+        SELECT COUNT(*) FROM INFORMATION_SCHEMA.STATISTICS
+        WHERE table_name = 'UserGroups'
+        AND table_schema = DATABASE()
+        AND index_name = 'idx_usergroups_displayname'
+    ) > 0,
+    'SELECT 1',
+    'CREATE INDEX idx_usergroups_displayname ON UserGroups(DisplayName);'
+));
+
+PREPARE createIndexIfNotExists FROM @preparedStatement;
+EXECUTE createIndexIfNotExists;
+DEALLOCATE PREPARE createIndexIfNotExists;

db/migrations/postgres/000079_usergroups_displayname_index.down.sql

@@ -0,0 +1 @@
+DROP INDEX IF EXISTS idx_usergroups_displayname;

db/migrations/postgres/000079_usergroups_displayname_index.up.sql

@@ -0,0 +1 @@
+CREATE INDEX IF NOT EXISTS idx_usergroups_displayname ON usergroups(displayname);