perf(graphql): correct GQL query performance issue

When ANS-104 support was added, the order by statements were adjusted to
not specify the stables to use for order (column numbers were used
instead). When filtering by tags and querying by stable data, this
introduced a performance regression. In that case, it's important to
sort by the height in tag tables for the best performance. This change
reintroduces sorting by table alias and field instead of column number.

src/database/standalone-sqlite.ts

@@ -1233,6 +1233,7 @@ export class StandaloneSqliteDatabaseWorker {
     let tagIndexColumn: string;
     let heightSortTableAlias: string;
     let blockTransactionIndexSortTableAlias: string;
+    let dataItemSortTableAlias: string | undefined = undefined;
     let maxDbHeight = Infinity;
 
     if (source === 'stable_txs') {
@@ -1299,6 +1300,7 @@ export class StandaloneSqliteDatabaseWorker {
           if (index === 0) {
             heightSortTableAlias = tagAlias;
             blockTransactionIndexSortTableAlias = tagAlias;
+            dataItemSortTableAlias = tagAlias;
             joinCond = {
               [`${blockTransactionIndexTableAlias}.block_transaction_index`]: `${tagAlias}.block_transaction_index`,
               [`${heightTableAlias}.height`]: `${tagAlias}.height`,
@@ -1406,7 +1408,13 @@ export class StandaloneSqliteDatabaseWorker {
           ),
         );
       }
-      query.orderBy('1 DESC, 2 DESC, 3 DESC');
+      let orderBy = `${heightSortTableAlias}.height DESC, ${blockTransactionIndexSortTableAlias}.block_transaction_index DESC`;
+      if (source === 'stable_items' && dataItemSortTableAlias !== undefined) {
+        orderBy += `, ${dataItemSortTableAlias}.data_item_id DESC`;
+      } else {
+        orderBy += `, 3 DESC`;
+      }
+      query.orderBy(orderBy);
     } else {
       if (
         cursorHeight != undefined &&
@@ -1440,7 +1448,13 @@ export class StandaloneSqliteDatabaseWorker {
           ),
         );
       }
-      query.orderBy('1 ASC, 2 ASC, 3 ASC');
+      let orderBy = `${heightSortTableAlias}.height ASC, ${blockTransactionIndexSortTableAlias}.block_transaction_index ASC`;
+      if (source === 'stable_items' && dataItemSortTableAlias !== undefined) {
+        orderBy += `, ${dataItemSortTableAlias}.data_item_id ASC`;
+      } else {
+        orderBy += `, 3 ASC`;
+      }
+      query.orderBy(orderBy);
     }
   }