尝试使用 node.js 'pg' 处理 postgres 大对象时出现 postgres 错误

Question

Trying to execute SELECT lo_creat(?) using pg.Client.query() I'm getting error: 'syntax error at or near ")"'.

"node" 12.16.1, "pg" 8.0.2, "PostgreSQL" 12.0

const { Client } = require('pg'); 
...
const client = new Client({
  host: <host>,
  port: <port>,
  database: <database>,
  user: <user>,
  password: <password>,
});
await client.connect();
await client.query("SET SCHEMA '<schema>'"); // everything is fine
await client.query('SELECT lo_creat(?)', [0x00060000]); // throws thw error here
...

Tried to execute the exact same query on my manual connection via pgAdmin4 and it worked fine returning the created oid .

Would appreciate any help, thanks in advance.

Answer 1

The issue here is using wrong syntax to pass the parameters.

$1 should be used instead of ? .

await client.query('SELECT lo_creat($1)', [0x00060000]); works correct.