Use pgx

postgres/schema/202112021109_initial.sql

@@ -37,7 +37,7 @@ CREATE TABLE payees (
 CREATE TABLE transactions (
     id uuid DEFAULT uuid_generate_v4() PRIMARY KEY,
     date date NOT NULL,
-    memo text NULL,
+    memo text NOT NULL,
     amount decimal(12,2) NOT NULL,
     account_id uuid NOT NULL,
     payee_id uuid