Hacktoberfest 2026: the issues maintainers tagged for October, open and beginner-friendly. Browse Hacktoberfest issues

SELECT within COPY statement does not have parameters substituted.

Open
#1,295 0 comments 0 reactions 0 assignees View on GitHub

Nobody has claimed this yet.

Assessment

Difficulty
3/5
Estimated time
1-2 days
Newbie friendliness
45/100
Issue type
Bug
Clarity
Mostly clear
Activity status
Stale
Tech stack
postgresql, python
Domain
databases

Research direction

Start by reproducing the provided COPY FROM (SELECT ...) example against PostgreSQL and trace how parameters are handled in that statement. Done means the $1 placeholder inside the SELECT is recognized and substituted as expected.

Written by the indexing model from the issue text.

Description

In the following:

COPY FROM ( SELECT a FROM t WHERE id>$1) TO '/dev/null'

The $1 won't be considered a parameter, which it should be.

Dominant language
Python
Stars
8.1k
Forks
469
Avg merge
2d 20h
Merged PRs (30d)
9

Contributor guide

No contributing guide indexed for this repository

First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

More from MagicStack/asyncpg

All issues in MagicStack/asyncpg

Similar issues

More Python issues

Get new issues in your inbox

A short digest of beginner-friendly GitHub issues.