为什么Postgres说列不存在？

Question

因此，我一直在使用下面的sql脚本，我似乎弄不明白为什么它总是告诉我我插入的数据位于一个不存在的列中。有没有更有Postgre经验的人可以帮我？

DROP SCHEMA pomodoro CASCADE;
CREATE SCHEMA pomodoro;
CREATE TABLE pomodoro.users
(
    uid smallint NOT NULL,
    username text NOT NULL,
    password text NOT NULL,
    weekly_goals bytea,
    CONSTRAINT users_pkey PRIMARY KEY (uid)
) WITH (OIDS=FALSE);

INSERT INTO pomodoro.users (uid, username,password)
VALUES (1,"dan","pass");

我得到的错误是：

INSERT INTO pomodoro.users (uid, username,password)
VALUES (1,"dan","pass");
psql:database-backup/start-script.sql:27: ERROR:  column "dan" does not exist
LINE 2: VALUES (1,"dan","pass");

Answer 1

双引号用于指定列名，因此可以插入如下内容：

INSERT INTO pomodoro.users (uid, username,password) VALUES (1,'dan','pass');