Merge pull request #6532 from blockscout/np-fix-migration

Fix index creation migration

CHANGELOG.md

@@ -28,6 +28,7 @@
 
 ### Fixes
 
+- [#6532](https://github.com/blockscout/blockscout/pull/6532) - Fix index creation migration
 - [#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

apps/explorer/priv/repo/migrations/20220919105140_add_method_id_index.exs

@@ -5,11 +5,11 @@ defmodule Explorer.Repo.Migrations.AddMethodIdIndex do
 
   def up do
     execute("""
-      CREATE INDEX CONCURRENTLY method_id ON public.transactions USING btree (substring(input for 4));
+      CREATE INDEX CONCURRENTLY IF NOT EXISTS method_id ON public.transactions USING btree (substring(input for 4));
     """)
   end
 
   def down do
-    execute("DROP INDEX method_id")
+    execute("DROP INDEX IF EXISTS method_id")
   end
 end