diff --git a/migration.sql b/migration.sql
index 7540c80..6674f62 100644
--- a/migration.sql
+++ b/migration.sql
@@ -126,11 +126,26 @@ CLUSTER banking_stage_results_2.transactions using transactions_pkey;
 
 CLUSTER banking_stage_results_2.accounts using accounts_pkey;
 
-CREATE TABLE banking_stage_results_2.accounts_map_transaction_latest(
-    acc_id BIGINT PRIMARY KEY,
-    -- sorted: oldest to latest, max 1000
-    tx_ids BIGINT[]
-);
+CREATE TABLE banking_stage_results_2.accounts_map_transaction_latest_parted(
+   acc_id BIGINT PRIMARY KEY,
+   tx_ids BIGINT[]
+) PARTITION BY HASH (acc_id);
+
+DO $$
+    DECLARE part_no integer;
+        DECLARE num_parts integer := 4;
+    BEGIN
+        for part_no in 0..num_parts-1 loop
+            EXECUTE format(
+                    '
+                    CREATE TABLE banking_stage_results_2.accounts_map_transaction_latest_part%s
+                    PARTITION OF banking_stage_results_2.accounts_map_transaction_latest_parted
+                    FOR VALUES WITH (MODULUS %s, REMAINDER %s)
+                    WITH (FILLFACTOR=80)
+                    ', part_no, num_parts, part_no);
+        end loop;
+END; $$;
+ALTER TABLE banking_stage_results_2.accounts_map_transaction_latest_parted RENAME TO accounts_map_transaction_latest;
 
 CREATE OR REPLACE FUNCTION array_dedup_append(base bigint[], append bigint[], n_limit int)
     RETURNS bigint[]