Merge pull request #2933 from poanetwork/vb-get-rid-of-deadlock-in-query-to-address_current_token_balance

Get rid of deadlock in the query to address_current_token_balance table

CHANGELOG.md

@@ -6,6 +6,7 @@
 - [#2918](https://github.com/poanetwork/blockscout/pull/2918) - Add tokenID for tokentx API action explicitly
 
 ### Fixes
+- [#2933](https://github.com/poanetwork/blockscout/pull/2933) - Get rid of deadlock in the query to address_current_token_balance table
 - [#2932](https://github.com/poanetwork/blockscout/pull/2932) - fix duplicate websocket connection
 - [#2928](https://github.com/poanetwork/blockscout/pull/2928) - Speedup pending block ops int txs to fetch query
 - [#2924](https://github.com/poanetwork/blockscout/pull/2924) - Speedup address to logs query

apps/explorer/lib/explorer/chain/import/runner/blocks.ex

@@ -119,7 +119,8 @@ defmodule Explorer.Chain.Import.Runner.Blocks do
     query =
       from(address_current_token_balance in Address.CurrentTokenBalance,
         where: address_current_token_balance.block_number in ^consensus_block_numbers,
-        select: address_current_token_balance.token_contract_address_hash
+        select: address_current_token_balance.token_contract_address_hash,
+        distinct: address_current_token_balance.token_contract_address_hash
       )
 
     contract_address_hashes = repo.all(query)