subquery to CTE

models/staging/xero/stg_xero__bank_transactions.sql

@@ -1,5 +1,20 @@
 with
     raw_bank_transactions as (select * from {{ source("xero", "bank_transactions") }}),
+    transaction_signs as (
+        -- making this tiny CTE to be able to reference the transaction_sign col
+        -- in the main body easily and avoid plastering the case-when a 
+        -- gazillion times.
+        select
+            {{ adapter.quote("BankTransactionID") }} as id_bank_transaction,
+            case
+                when {{ adapter.quote("Type") }} like '%SPEND%'
+                then -1
+                when {{ adapter.quote("Type") }} like '%RECEIVE%'
+                then 1
+                else null
+            end as transaction_sign
+        from raw_bank_transactions
+    ),
     stg_xero__bank_transactions as (
         select
             {{ adapter.quote("BankTransactionID") }} as id_bank_transaction,
@@ -39,21 +54,7 @@ with
             {{ adapter.quote("_airbyte_extracted_at") }} as dwh_extracted_at_utc
         from raw_bank_transactions bt
         left join
-            (
+            transaction_signs ts
-                -- making this tiny subquery to be able to reference the 
-                -- transaction_sign col above easily and avoid plastering the 
-                -- case-when a gazillion times.
-                select
-                    {{ adapter.quote("BankTransactionID") }} as id_bank_transaction,
-                    case
-                        when {{ adapter.quote("Type") }} like '%SPEND%'
-                        then -1
-                        when {{ adapter.quote("Type") }} like '%RECEIVE%'
-                        then 1
-                        else null
-                    end as transaction_sign
-                from raw_bank_transactions
-            ) ts
             on bt.{{ adapter.quote("BankTransactionID") }} = ts.id_bank_transaction
     )
 select *