optimisation efforts

files/grest/rpc/assets/asset_address_list.sql

@@ -1,32 +1,26 @@
 DROP FUNCTION IF EXISTS grest.asset_address_list (text);
 
 CREATE FUNCTION grest.asset_address_list (_asset_identifier text DEFAULT NULL)
-    RETURNS TABLE (
-        address varchar,
-        quantity numeric)
-    LANGUAGE PLPGSQL
-    AS $$
+  RETURNS TABLE (
+    address varchar,
+    quantity numeric)
+  LANGUAGE PLPGSQL
+  AS $$
 BEGIN
-    RETURN QUERY
-    SELECT
-        TXO.ADDRESS,
-        sum(MTX.QUANTITY)
-    FROM
-        MA_TX_OUT MTX
-        INNER JOIN TX_OUT TXO ON TXO.ID = MTX.TX_OUT_ID
-    WHERE
-        DECODE(_asset_identifier, 'hex') = MTX.POLICY || MTX.NAME
-        AND NOT EXISTS (
-            SELECT
-                TX_OUT.ID
-            FROM
-                TX_OUT
-                INNER JOIN TX_IN ON TX_OUT.TX_ID = TX_IN.TX_OUT_ID
-                    AND TX_OUT.INDEX = TX_IN.TX_OUT_INDEX
-            WHERE
-                TXO.ID = TX_OUT.ID)
-    GROUP BY
-        TXO.ADDRESS;
+  RETURN QUERY
+  SELECT
+    TXO.ADDRESS,
+    SUM(MTX.QUANTITY)
+  FROM
+    MA_TX_OUT MTX
+    INNER JOIN TX_OUT TXO ON TXO.ID = MTX.TX_OUT_ID
+    LEFT JOIN TX_IN ON TXO.TX_ID = TX_IN.TX_OUT_ID
+      AND TXO.INDEX::smallint = TX_IN.TX_OUT_INDEX::smallint
+  WHERE
+    DECODE(_asset_identifier, 'hex') = MTX.POLICY || MTX.NAME
+    AND TX_IN.TX_IN_ID IS NULL
+  GROUP BY
+    TXO.ADDRESS;
 END;
 $$;