wallet contract hour merge key (#1249)

spellbook/models/transfers/ethereum/erc20/transfers_ethereum_erc20_agg_hour.sql

@@ -3,7 +3,7 @@
         materialized ='incremental',
         file_format ='delta',
         incremental_strategy='merge',
-        unique_key='unique_transfer_id'
+        unique_key='wallet_contract_hour'
         )
 }}
 
@@ -13,14 +13,18 @@ select
     tr.wallet_address,
     tr.token_address,
     t.symbol,
+    tr.wallet_address || '-' || tr.token_address || '-' || date_trunc('hour', tr.evt_block_time) as wallet_contract_hour,
     sum(tr.amount_raw) as amount_raw,
-    sum(tr.amount_raw / power(10, t.decimals)) as amount,
-    unique_tx_id || '-' || wallet_address || '-' || token_address || '-' || sum(tr.amount_raw)::string as unique_transfer_id
+    sum(tr.amount_raw / power(10, t.decimals)) as amount
 from {{ ref('transfers_ethereum_erc20') }} tr
 left join {{ ref('tokens_ethereum_erc20') }} t on t.contract_address = tr.token_address
 {% if is_incremental() %}
 -- this filter will only be applied on an incremental run
 where date_trunc('hour', tr.evt_block_time) > now() - interval 2 days
 {% endif %}
 group by
-    date_trunc('hour', tr.evt_block_time), tr.wallet_address, tr.token_address, t.symbol,unique_tx_id
+    date_trunc('hour', tr.evt_block_time),
+  tr.wallet_address,
+  tr.token_address,
+  t.symbol,
+  tr.wallet_address || '-' || tr.token_address || '-' || date_trunc('hour', tr.evt_block_time)