Cannot insert multiple commands into a prepared statement

[lroal]

When runing multiple inserts separated by semicolon, I get the error Cannot insert multiple commands into a prepared statement.
Line: /pg-native/index.js:173:26
I thought multiple statements were possible since v2 ...

[sehrope]

PostgreSQL allows for parameters only in commands with a single statement. Multi-statement commands (separated by semicolons) are not allowed to have parameters. This is a server limitation and not specific to this driver.

See the protocol docs for some more detail on this: https://www.postgresql.org/docs/current/protocol-flow.html#PROTOCOL-FLOW-EXT-QUERY

[lroal]

But I am not sending any parameters. I pass in an empty array.
This works: client.query(sql, onResult);
This does not work: client.query(sql, [], onResult);
The pure js client ('pg'), does no throw. So, it is inconsistent behaviour.

[charmander]

(See also brianc/node-postgres#2100)