Merge pull request blockscout#6511 from blockscout/np-fix-api-2-txs-1

Split ordering cases for txs

CHANGELOG.md

@@ -32,7 +32,7 @@
 - [#6473](https://github.com/blockscout/blockscout/pull/6473) - Fix state changes for contract creation transactions
 - [#6475](https://github.com/blockscout/blockscout/pull/6475) - Fix token name with unicode graphemes shortening
 - [#6420](https://github.com/blockscout/blockscout/pull/6420) - Fix address logs search
-- [#6390](https://github.com/blockscout/blockscout/pull/6390), [#6502](https://github.com/blockscout/blockscout/pull/6502) - Fix transactions responses in API v2
+- [#6390](https://github.com/blockscout/blockscout/pull/6390), [#6502](https://github.com/blockscout/blockscout/pull/6502), [#6511](https://github.com/blockscout/blockscout/pull/6511) - Fix transactions responses in API v2
 - [#6357](https://github.com/blockscout/blockscout/pull/6357), [#6409](https://github.com/blockscout/blockscout/pull/6409), [#6428](https://github.com/blockscout/blockscout/pull/6428) - Fix definitions of NETWORK_PATH, API_PATH, SOCKET_ROOT: process trailing slash
 - [#6338](https://github.com/blockscout/blockscout/pull/6338) - Fix token search with space
 - [#6329](https://github.com/blockscout/blockscout/pull/6329) - Prevent logger from truncating response from rust verifier service in case of an error

apps/explorer/lib/explorer/chain.ex

@@ -437,7 +437,7 @@ defmodule Explorer.Chain do
 
     options
     |> Keyword.get(:paging_options, @default_paging_options)
-    |> fetch_transactions(from_block, to_block)
+    |> fetch_transactions(from_block, to_block, true)
   end
 
   defp transactions_block_numbers_at_address(address_hash, options) do
@@ -3448,7 +3448,7 @@ defmodule Explorer.Chain do
     |> pending_transactions_query()
     |> apply_filter_by_method_id_to_transactions(method_id_filter)
     |> apply_filter_by_tx_type_to_transactions(type_filter)
-    |> order_by([transaction], desc: transaction.inserted_at, desc: transaction.hash)
+    |> order_by([transaction], desc: transaction.inserted_at, asc: transaction.hash)
     |> join_associations(necessity_by_association)
     |> (&if(old_ui?, do: preload(&1, [{:token_transfers, [:token, :from_address, :to_address]}]), else: &1)).()
     |> Repo.all()
@@ -4404,16 +4404,26 @@ defmodule Explorer.Chain do
     if Repo.one(query), do: true, else: false
   end
 
-  defp fetch_transactions(paging_options \\ nil, from_block \\ nil, to_block \\ nil) do
+  defp fetch_transactions(paging_options \\ nil, from_block \\ nil, to_block \\ nil, is_address? \\ false) do
     Transaction
+    |> order_for_transactions(is_address?)
+    |> where_block_number_in_period(from_block, to_block)
+    |> handle_paging_options(paging_options)
+  end
+
+  defp order_for_transactions(query, true) do
+    query
     |> order_by([transaction],
       desc: transaction.block_number,
       desc: transaction.index,
       desc: transaction.inserted_at,
-      desc: transaction.hash
+      asc: transaction.hash
     )
-    |> where_block_number_in_period(from_block, to_block)
-    |> handle_paging_options(paging_options)
+  end
+
+  defp order_for_transactions(query, _) do
+    query
+    |> order_by([transaction], desc: transaction.block_number, desc: transaction.index)
   end
 
   defp fetch_transactions_in_ascending_order_by_index(paging_options) do
@@ -4626,7 +4636,7 @@ defmodule Explorer.Chain do
       [transaction],
       (is_nil(transaction.block_number) and
          (transaction.inserted_at < ^inserted_at or
-            (transaction.inserted_at == ^inserted_at and transaction.hash < ^hash))) or
+            (transaction.inserted_at == ^inserted_at and transaction.hash > ^hash))) or
         not is_nil(transaction.block_number)
     )
   end

apps/explorer/priv/repo/migrations/20221126103223_add_txs_indexes.exs

@@ -0,0 +1,73 @@
+defmodule Explorer.Repo.Migrations.AddTxsIndexes do
+  use Ecto.Migration
+  @disable_ddl_transaction true
+  @disable_migration_lock true
+
+  def change do
+    drop_if_exists(
+      index(
+        :transactions,
+        [:from_address_hash, "block_number DESC NULLS FIRST", "index DESC NULLS FIRST", :hash],
+        name: "transactions_from_address_hash_recent_collated_index",
+        concurrently: true
+      )
+    )
+
+    drop_if_exists(
+      index(
+        :transactions,
+        [:to_address_hash, "block_number DESC NULLS FIRST", "index DESC NULLS FIRST", :hash],
+        name: "transactions_to_address_hash_recent_collated_index",
+        concurrently: true
+      )
+    )
+
+    drop_if_exists(
+      index(
+        :transactions,
+        [:created_contract_address_hash, "block_number DESC NULLS FIRST", "index DESC NULLS FIRST", :hash],
+        name: "transactions_created_contract_address_hash_recent_collated_index",
+        concurrently: true
+      )
+    )
+
+    create_if_not_exists(
+      index(
+        :transactions,
+        [
+          :from_address_hash,
+          "block_number DESC NULLS FIRST",
+          "index DESC NULLS FIRST",
+          "inserted_at DESC",
+          "hash ASC"
+        ],
+        name: "transactions_from_address_hash_with_pending_index",
+        concurrently: true
+      )
+    )
+
+    create_if_not_exists(
+      index(
+        :transactions,
+        [:to_address_hash, "block_number DESC NULLS FIRST", "index DESC NULLS FIRST", "inserted_at DESC", "hash ASC"],
+        name: "transactions_to_address_hash_with_pending_index",
+        concurrently: true
+      )
+    )
+
+    create_if_not_exists(
+      index(
+        :transactions,
+        [
+          :created_contract_address_hash,
+          "block_number DESC NULLS FIRST",
+          "index DESC NULLS FIRST",
+          "inserted_at DESC",
+          "hash ASC"
+        ],
+        name: "transactions_created_contract_address_hash_with_pending_index",
+        concurrently: true
+      )
+    )
+  end
+end