NodeJs PostgresQl: Supplied 2 Parameters But Prepared Statement "" Requires 0 - node.js

Question

I have the following function which I call from my controller:
async function insertUser(user_name, icon_link) {
await pool.query("DO $$BEGIN IF EXISTS (SELECT * FROM targets WHERE user_name = $1 ) THEN UPDATE targets SET icon_link = $2 , complaints = complaints + 1; ELSE INSERT INTO targets(user_name, icon_link, complaints) VALUES( $1 , $2 , 0); END IF; END; $$;", data);
}
I get the following error when I try to call it:
const message = name === 'notice' ? new messages_1.NoticeMessage(length, messageValue) : new messages_1.DatabaseError(messageValue, length, name);
^
error: bind message supplies 2 parameters, but prepared statement "" requires 0
at Parser.parseErrorMessage (/Users/user/project/node_modules/pg-protocol/dist/parser.js:287:98)
at Parser.handlePacket (/Users/user/project/node_modules/pg-protocol/dist/parser.js:126:29)
at Parser.parse (/Users/user/project/node_modules/pg-protocol/dist/parser.js:39:38)
at Socket.<anonymous> (/Users/user/project/node_modules/pg-protocol/dist/index.js:11:42)
at Socket.emit (node:events:512:28)
at addChunk (node:internal/streams/readable:324:12)
at readableAddChunk (node:internal/streams/readable:297:9)
at Readable.push (node:internal/streams/readable:234:10)
at TCP.onStreamRead (node:internal/stream_base_commons:190:23) {
This was working fine until it suddenly stopped working for some reason that I cannot understand.
I know the issue is not because of the query itself because the same issue persists on my other queries as well. Also variables are passing on fine, I have checked it while debugging.
I tried passing the parameters like this:
async function insertUser(user_name, icon_link) {
await pool.query({text: 'DO $$BEGIN IF EXISTS (SELECT * FROM targets WHERE user_name = $1 ) THEN UPDATE targets SET icon_link = $2 , complaints = complaints + 1; ELSE INSERT INTO targets(user_name, icon_link, complaints) VALUES( $1 , $2 , 0); END IF; END; $$;', values: [user_name, icon_link]});
}
It didn't work.
I also tried passing them by adding ' to the string parameters:
async function insertUser(user_name, icon_link) {
await pool.query("DO $$BEGIN IF EXISTS (SELECT * FROM targets WHERE user_name = '$1' ) THEN UPDATE targets SET icon_link = '$2' , complaints = complaints + 1; ELSE INSERT INTO targets(user_name, icon_link, complaints) VALUES( '$1' , '$2' , 0); END IF; END; $$;", data);
}
It didn't also work for obvious reasons.
Edit:
I also discovered that If I pass no variables:
const res = await client.query('DO $$ BEGIN IF EXISTS (SELECT * FROM targets WHERE user_name = $1 ) THEN UPDATE targets SET icon_link = $2 , complaints = complaints + 1; ELSE INSERT INTO targets(user_name, icon_link, complaints) VALUES( $1 , $2 , 0); END IF; END $$;');
I get:
error: there is no parameter $1

Answer 1

Formatting the query before hand solves the issue, but I think passing the parameters should be working. You must use ` instead of " for this to work.
return await pool.query(`DO $$ BEGIN IF EXISTS (SELECT * FROM targets WHERE user_name = \'${user_name}\' ) THEN UPDATE targets SET icon_link = \'${icon_link}\' , complaints = complaints + 1; ELSE INSERT INTO targets(user_name, icon_link, complaints) VALUES(\'${user_name}\' , \'${icon_link}\' , 0); END IF; END $$;`);