:copyfrom generates incorrect column name when inserting primary keys #2133

Version

1.17.2

What happened?

I want to use :copyfrom to insert primary key values. sqlc generates an incorrect column name for the primary key field, breaking the query. I made a minimal example to reproduce this, which, when generating code to populate author.author_id results in the error:

ERROR: column "authorID" does not exist (SQLSTATE 42703)

i.e. the author_id column was incorrectly renamed to authorID.

The specific incorrect code is at line 41 in the generated example/copyfrom.go:

func (q *Queries) CreateAuthors(ctx context.Context, authorID []int32) (int64, error) {
	return q.db.CopyFrom(ctx, []string{"authors"}, []string{"authorID"}, &iteratorForCreateAuthors{rows: authorID})
}

Here the incorrect column is visible in the third argument to q.db.CopyFrom.

Relevant log output

No response

Database schema

CREATE TABLE authors (
    author_id SERIAL PRIMARY KEY
);

SQL queries

-- name: CreateAuthors :copyfrom
INSERT INTO authors (author_id) VALUES ($1);

Configuration

version: '2'
sql:
- schema:
  - 'schema.sql'
  queries:
  - 'queries.sql'
  engine: 'postgresql'
  gen:
    go:
      out: 'example'
      sql_package: 'pgx/v4'

Playground URL

https://play.sqlc.dev/p/e9e0f5f0257534acf1eb8864a3c36d3089b64f7c0b28f12264ae4494595dffb8

What operating system are you using?

Linux

What database engines are you using?

PostgreSQL

What type of code are you generating?

Go