Removed auttachment type index

app/src/main/java/eu/faircode/email/DB.java

@@ -60,7 +60,7 @@ import io.requery.android.database.sqlite.SQLiteDatabase;
 // https://developer.android.com/topic/libraries/architecture/room.html
 
 @Database(
-        version = 165,
+        version = 166,
         entities = {
                 EntityIdentity.class,
                 EntityAccount.class,
@@ -1634,7 +1634,12 @@ public abstract class DB extends RoomDatabase {
                     public void migrate(@NonNull SupportSQLiteDatabase db) {
                         Log.i("DB migration from version " + startVersion + " to " + endVersion);
                         db.execSQL("CREATE INDEX IF NOT EXISTS `index_attachment_message_type` ON `attachment` (`message`, `type`)");
-                        createTriggers(db);
+                    }
+                })
+                .addMigrations(new Migration(165, 166) {
+                    @Override
+                    public void migrate(@NonNull SupportSQLiteDatabase db) {
+                        db.execSQL("DROP INDEX `index_attachment_message_type`");
                     }
                 });
     }

app/src/main/java/eu/faircode/email/DaoMessage.java

@@ -310,8 +310,8 @@ public interface DaoMessage {
             " OR (:recipients AND `bcc` LIKE :find COLLATE NOCASE)" + // no index
             " OR (:subject AND `subject` LIKE :find COLLATE NOCASE)" + // unsuitable index
             " OR (:keywords AND `keywords` LIKE :find COLLATE NOCASE)" + // no index
-            " OR (:message AND `preview` LIKE :find COLLATE NOCASE)" +
+            " OR (:message AND `preview` LIKE :find COLLATE NOCASE)" + // no index
-            " OR (:attachments AND attachment.name LIKE :find COLLATE NOCASE)" +
+            " OR (:attachments AND attachment.name LIKE :find COLLATE NOCASE)" + // no index
             " OR (:attachments AND attachment.type LIKE :find COLLATE NOCASE)) AS matched" + // no index
             " FROM message" +
             " LEFT JOIN attachment ON attachment.message = message.id" +

app/src/main/java/eu/faircode/email/EntityAttachment.java

@@ -50,7 +50,6 @@ import static androidx.room.ForeignKey.CASCADE;
         indices = {
                 @Index(value = {"message"}),
                 @Index(value = {"message", "sequence"}, unique = true),
-                @Index(value = {"message", "type"}),
                 @Index(value = {"message", "cid"})
         }
 )