models/migrations/v1_27/v358.go

@@ -8,9 +8,17 @@ import "xorm.io/xorm"
 // DropDisplayNameColumns removes the display_name column from repo_manifest
 // and update_stream_config. Display name is now computed from extension_type + name.
 func DropDisplayNameColumns(x *xorm.Engine) error {
-	if _, err := x.Exec("ALTER TABLE repo_manifest DROP COLUMN IF EXISTS display_name"); err != nil {
-		return err
+	// MySQL 8.0.x does not support DROP COLUMN IF EXISTS — check first.
+	for _, table := range []string{"repo_manifest", "update_stream_config"} {
+		var count int
+		if _, err := x.SQL("SELECT COUNT(*) FROM information_schema.COLUMNS WHERE TABLE_SCHEMA = DATABASE() AND TABLE_NAME = ? AND COLUMN_NAME = 'display_name'", table).Get(&count); err != nil {
+			return err
+		}
+		if count > 0 {
+			if _, err := x.Exec("ALTER TABLE `" + table + "` DROP COLUMN `display_name`"); err != nil {
+				return err
+			}
+		}
 	}
-	_, err := x.Exec("ALTER TABLE update_stream_config DROP COLUMN IF EXISTS display_name")
-	return err
+	return nil
 }