Remove deletion of sources table, just rename

data/db-schema/src/main/resources/net/corda/db/schema/vnode-vault/migration/ledger-utxo-creation-v5.1.xml

@@ -113,47 +113,29 @@
         <!-- Drop the created column from the utxo_transaction_component table -->
         <dropColumn columnName="created" tableName="utxo_transaction_component"/>
 
+        <!-- Drop the created and is_ref_input columns from the utxo_transaction_sources table -->
+        <dropColumn tableName="utxo_transaction_sources">
+            <column name="created"/>
+            <column name="is_ref_input"/>
+        </dropColumn>
+
+        <!-- Rename the columns in utxo_transaction_sources to avoid confusion -->
+        <renameColumn columnDataType="VARCHAR(160)"
+                      newColumnName="referenced_state_transaction_id"
+                      oldColumnName="ref_transaction_id"
+                      tableName="utxo_transaction_sources"/>
+
+        <renameColumn columnDataType="INT"
+                      newColumnName="referenced_state_index"
+                      oldColumnName="ref_leaf_idx"
+                      tableName="utxo_transaction_sources"/>
+
         <!-- Drop the utxo_transaction_cpk table -->
         <dropTable tableName="utxo_transaction_cpk"/>
 
         <!-- Drop the utxo_cpk table -->
         <dropTable tableName="utxo_cpk"/>
 
-        <!-- Add new columns: hash and index for input and reference states -->
-        <addColumn tableName="utxo_transaction_component">
-            <column name="referenced_state_transaction_id" type="VARCHAR(160)">
-                <constraints nullable="true"/>
-            </column>
-            <column name="referenced_state_index" type="INT">
-                <constraints nullable="true"/>
-            </column>
-        </addColumn>
-
-        <!--
-        Migrate data from the old utxo_transaction_sources table
-        NOTE: We can't use <update> here because both tables have the same column naming
-        (transaction_id, group_idx etc.) and the SQL statement generated will not work in
-        Postgres, and we have no way to alias the base table.
-        -->
-        <sql>
-            UPDATE utxo_transaction_component txc
-            SET
-            referenced_state_transaction_id = (
-                SELECT ref_transaction_id from utxo_transaction_sources ts
-                WHERE ts.transaction_id=txc.transaction_id
-                AND ts.group_idx=txc.group_idx
-                AND ts.leaf_idx=txc.leaf_idx
-            ),
-            referenced_state_index = (
-                SELECT ref_leaf_idx from utxo_transaction_sources ts
-                WHERE ts.transaction_id=txc.transaction_id
-                AND ts.group_idx=txc.group_idx
-                AND ts.leaf_idx=txc.leaf_idx
-            );
-        </sql>
-
-        <!-- Drop the utxo_transaction_sources table -->
-        <dropTable tableName="utxo_transaction_sources"/>
 
     </changeSet>