id
first_name
last_name
created_at
NOW()
updated_at
NOW()
create table "users" (
"id" serial primary key,
"first_name" varchar(255) null,
"last_name" varchar(255) null,
"email" varchar(255) not null,
"created_at" timestamp not null default NOW(),
"updated_at" timestamp not null default NOW()
)