From b5c226ab60f83e944be4c6c12c0ebcb5c2d656cb Mon Sep 17 00:00:00 2001
From: hodlonaut <hodlonaut@github.com>
Date: Tue, 3 Dec 2024 10:36:21 +1100
Subject: [PATCH] Performance improvement rejiggling of the second CTE

---
 files/grest/rpc/assets/asset_utxos.sql | 32 ++++++++++++++++++++++----
 1 file changed, 27 insertions(+), 5 deletions(-)

diff --git a/files/grest/rpc/assets/asset_utxos.sql b/files/grest/rpc/assets/asset_utxos.sql
index 2090c80..33f8268 100644
--- a/files/grest/rpc/assets/asset_utxos.sql
+++ b/files/grest/rpc/assets/asset_utxos.sql
@@ -37,12 +37,13 @@ BEGIN
     WITH
       _txo_list AS (
         SELECT
-          txo.id
+          DISTINCT txo.id -- added DISTINCT
         FROM tx_out AS txo
         INNER JOIN ma_tx_out AS mto ON mto.tx_out_id = txo.id
         WHERE mto.ident = ANY(_asset_id_list)
           AND txo.consumed_by_tx_id IS NULL
-      ),
+      )
+      /*,
       _assets AS (
         SELECT
           txol.id,
@@ -61,6 +62,7 @@ BEGIN
         LEFT JOIN grest.asset_info_cache AS aic ON aic.asset_id = ma.id
         GROUP BY txol.id
       )
+      */
     SELECT
       ENCODE(tx.hash, 'hex')::text AS tx_hash,
       tx_out.index::smallint,
@@ -91,16 +93,36 @@ BEGIN
       END) AS reference_script,
       CASE
         WHEN _extended = false THEN NULL
-        ELSE COALESCE(assets, JSONB_BUILD_ARRAY())
+        ELSE COALESCE(
+          
+          --assets, 
+       (
+          SELECT
+          JSONB_AGG(CASE WHEN ma.policy IS NULL THEN NULL
+            ELSE JSONB_BUILD_OBJECT(
+            'policy_id', ENCODE(ma.policy, 'hex'),
+            'asset_name', ENCODE(ma.name, 'hex'),
+            'fingerprint', ma.fingerprint,
+            'decimals', aic.decimals,
+            'quantity', mto.quantity::text
+            )
+          END) as assets
+        FROM ma_tx_out AS mto
+        INNER JOIN multi_asset AS ma ON mto.tx_out_id = my_txo_list.id and ma.id = mto.ident
+        left JOIN grest.asset_info_cache AS aic ON aic.asset_id = ma.id
+        GROUP BY my_txo_list.id
+      ),
+        
+        JSONB_BUILD_ARRAY())
       END AS asset_list,
       (CASE
         WHEN tx_out.consumed_by_tx_id IS NULL THEN false
         ELSE true
       END) AS is_spent
-    FROM tx_out
+    FROM _txo_list AS my_txo_list
+    INNER JOIN tx_out on tx_out.id = my_txo_list.id
     INNER JOIN tx ON tx_out.tx_id = tx.id
     INNER JOIN address AS a ON a.id = tx_out.address_id
-    INNER JOIN _assets ON tx_out.id = _assets.id
     LEFT JOIN stake_address AS sa ON tx_out.stake_address_id = sa.id
     LEFT JOIN block AS b ON b.id = tx.block_id
     LEFT JOIN datum ON datum.id = tx_out.inline_datum_id