you can add vendors while creating.

src/clj/auto_ap/db/vendors.clj

@@ -53,15 +53,14 @@
        :where [:= :id (if (int? id)
                         id
                         (Integer/parseInt id))])
-      execute!) 
+      execute!)
   (get-by-id (if (int? id)
                id
                (Integer/parseInt id))))
 
 (defn insert [data]
-  (let [[id] (-> (sql/build :insert-into :vendors
-                            :values [(unparse data)])
-                 execute!)]
+  
+  (let [[{:keys [id]}] (j/insert! (get-conn) :vendors (unparse data))]
     (println "inserted vendor: " data ", id " id)
     (get-by-id id)))