AN-5054/native-null-value (#302)

* native

* docs

models/doc_descriptions/dex - (imported from layer 1)/eth_dex_swaps_amount_in_usd.md

@@ -1,5 +1,5 @@
 {% docs eth_dex_swaps_amount_in_usd %}
 
-The amount of tokens put into the swap converted to USD using the price of the token.
+The value of the swapped tokens in USD at the time of the transaction, where available. If there is a variance of 75% or greater in USD swap values or one side of the swap's USD value is NULL, then both amount_in_usd and amount_out_usd will be set to NULL. This avoids falsely overstating USD swap volumes for low-liquidity token pairings or incorrectly reported prices. To get USD values in these scenarios anyway, please re-join the `price.ez_prices_hourly` table. Note, this logic does not apply for the chain's Native asset. 
 
 {% enddocs %}

models/doc_descriptions/dex - (imported from layer 1)/eth_dex_swaps_amount_out_usd.md

@@ -1,5 +1,5 @@
 {% docs eth_dex_swaps_amount_out_usd %}
 
-The amount of tokens taken out of or received from the swap converted to USD using the price of the token.
+The value of the swapped tokens in USD at the time of the transaction, where available. If there is a variance of 75% or greater in USD swap values or one side of the swap's USD value is NULL, then both amount_in_usd and amount_out_usd will be set to NULL. This avoids falsely overstating USD swap volumes for low-liquidity token pairings or incorrectly reported prices. To get USD values in these scenarios anyway, please re-join the `price.ez_prices_hourly` table. Note, this logic does not apply for the chain's Native asset. 
 
 {% enddocs %}

models/gold/defi/defi__ez_dex_swaps.sql

@@ -26,20 +26,26 @@ SELECT
   amount_in,
   ROUND(
         CASE
-            WHEN amount_out_usd IS NULL
-            OR ABS((amount_in_usd - amount_out_usd) / NULLIF(amount_out_usd, 0)) > 0.75
-            OR ABS((amount_in_usd - amount_out_usd) / NULLIF(amount_in_usd, 0)) > 0.75 THEN NULL
+            WHEN token_in <> '0x4200000000000000000000000000000000000006'
+            AND (
+                amount_out_usd IS NULL
+                OR ABS((amount_in_usd - amount_out_usd) / NULLIF(amount_out_usd, 0)) > 0.75
+                OR ABS((amount_in_usd - amount_out_usd) / NULLIF(amount_in_usd, 0)) > 0.75
+            ) THEN NULL
             ELSE amount_in_usd
         END,
         2
     ) AS amount_in_usd,
-  amount_out_unadj,
-  amount_out,
-  ROUND(
+    amount_out_unadj,
+    amount_out,
+    ROUND(
         CASE
-            WHEN amount_in_usd IS NULL
-            OR ABS((amount_out_usd - amount_in_usd) / NULLIF(amount_in_usd, 0)) > 0.75
-            OR ABS((amount_out_usd - amount_in_usd) / NULLIF(amount_out_usd, 0)) > 0.75 THEN NULL
+            WHEN token_out <> '0x4200000000000000000000000000000000000006'
+            AND (
+                amount_in_usd IS NULL
+                OR ABS((amount_out_usd - amount_in_usd) / NULLIF(amount_in_usd, 0)) > 0.75
+                OR ABS((amount_out_usd - amount_in_usd) / NULLIF(amount_out_usd, 0)) > 0.75
+            ) THEN NULL
             ELSE amount_out_usd
         END,
         2