fixes

migrations/mysql/0018_directory_username.sql

@@ -0,0 +1,3 @@
+ALTER TABLE users ADD COLUMN directory_username VARCHAR(255);
+UPDATE users SET directory_username = nickname WHERE auth_provider IS NOT NULL AND auth_provider <> 'local' AND directory_username IS NULL;
+CREATE INDEX idx_users_directory_username ON users (directory_username);

migrations/postgres/0018_directory_username.sql

@@ -0,0 +1,3 @@
+ALTER TABLE users ADD COLUMN directory_username VARCHAR(255);
+UPDATE users SET directory_username = nickname WHERE auth_provider IS NOT NULL AND auth_provider <> 'local' AND directory_username IS NULL;
+CREATE INDEX idx_users_directory_username ON users (LOWER(directory_username));

migrations/sqlite/0018_directory_username.sql

@@ -0,0 +1,3 @@
+ALTER TABLE users ADD COLUMN directory_username TEXT;
+UPDATE users SET directory_username = nickname WHERE auth_provider IS NOT NULL AND auth_provider <> 'local' AND directory_username IS NULL;
+CREATE INDEX idx_users_directory_username ON users (directory_username);