postgres：当从 node.js 调用时表明显存在时，关系不存在

Question

so I psql'd and created table users;

 CREATE TABLE users (
    id integer NOT NULL,
    username text
);

I am able to grab rows by doing SELECT * FROM users;

However, when I use node.js with the library module pg to make calls I get the infamous relation does not exist.

const createQuery = {text: "INSERT INTO users(id, username) VALUES($1)",values: values}
const { rows } = await db.query(createQuery);

I wasn't running into this issue before a complete server migration.

Answer 1

The most likely option is that the table was created in a different schema than the default schema that you are using from node.js.

You can search the schema your table belongs to by querying table information_schema.tables :

select table_schema from information_schema.tables where table_name = 'users';

With this information at hand, you can now qualify your table name with the proper schema name in the query that you are running from node.js. Assuming that the schema name is myschema , you would go:

INSERT INTO myschema.users(id, username) VALUES($1)

Answer 2

By default when you don't specify any schema, postgres points out to public schema. Please use schema name/ database name as along with the table name. Make sure you have provided proper configurations of the database within your code. If the configurations are proper and even you no need to provided schema alias within the query.