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PostgreSQL Limits: maximum number of columns in SELECT result

Vladimir Sitnikov <sitnikov.vladimir@gmail.com>

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From: Vladimir Sitnikov <sitnikov.vladimir@gmail.com>
To: PostgreSQL Hackers <pgsql-hackers@lists.postgresql.org>
Date: 2022-05-31T07:16:35Z
Lists: pgsql-hackers 
Hi,

Today I hit "ERROR: target lists can have at most 1664 entries", and I was
surprised the limit was not documented.

I suggest that the limit of "1664 columns per tuple" (or whatever is the
right term) should be added
to the list at https://www.postgresql.org/docs/current/limits.html e.g.
after "columns per table".

Could someone please commit that 1-2 line doc improvement or do you need a
patch for it?

Vladimir

Commits

Same data as JSON: GET /api/v1/messages/:b64id/commits the thread's linked commits as JSON, with link sources. API reference →

  1. Doc: mention limitation of the number of resultset columns