tests in typescript

back/db/utils/addressQueries.ts

@@ -0,0 +1,14 @@
+const queryAddress = (type: string): string => `
+    LEFT JOIN (
+        SELECT address_field.address_id, address_field.message_id
+        FROM address_field 
+        INNER JOIN field_name 
+        WHERE 
+            field_name.field_id = address_field.field_id AND
+            field_name.field_name = '${type}'
+    )
+`;
+
+export const queryFromId = queryAddress("from");
+export const queryToId = queryAddress("to");
+export const queryCcId = queryAddress("cc");