From a36b2ae436381d655ff8d0c6edf0757cc86e71b1 Mon Sep 17 00:00:00 2001
From: ptrus <peter@u-s.si>
Date: Wed, 18 Dec 2024 17:38:41 +0100
Subject: [PATCH] storage: rewrite RuntimeEvmVerifiedContractEvents

---
 .changelog/838.feature.md   | 4 ++++
 analyzer/queries/queries.go | 2 +-
 2 files changed, 5 insertions(+), 1 deletion(-)
 create mode 100644 .changelog/838.feature.md

diff --git a/.changelog/838.feature.md b/.changelog/838.feature.md
new file mode 100644
index 000000000..b414ec55d
--- /dev/null
+++ b/.changelog/838.feature.md
@@ -0,0 +1,4 @@
+Optimize `RuntimeEvmVerifiedContractEvents` query
+
+Optimizes the query by switching DECODE to ENCODE for address comparison 
+to leverage existing indexes on `chain.runtime_events` table.
diff --git a/analyzer/queries/queries.go b/analyzer/queries/queries.go
index fb0364b88..c999aec46 100644
--- a/analyzer/queries/queries.go
+++ b/analyzer/queries/queries.go
@@ -1143,7 +1143,7 @@ var (
     JOIN chain.runtime_events as evs ON
       evs.type = 'evm.log' AND
       evs.runtime = abi_contracts.runtime AND
-      decode(body->>'address', 'base64') = preimages.address_data
+      body->>'address' = encode(preimages.address_data, 'base64')
     WHERE
       (evs.abi_parsed_at IS NULL OR evs.abi_parsed_at < abi_contracts.verification_info_downloaded_at)
     LIMIT $2`