SELECT without columns fails

[FranckPachot]

Describe the bug

A SELECT without columns fails on an internal error:

syntax error at or near ")"
LINE 1: SELECT "oid", "typname" FROM "pg_type" WHERE "oid" IN ()
^

To Reproduce

select from pg_class;

Expected behavior

On psql it displays the number of rows:

postgres=> select from pg_class;
--
(419 rows)

VS Code version

Version: 1.126.0 (user setup)
Commit: 7e7950df89d055b5a378379db9ee14290772148a
Date: 2026-06-23T01:46:13Z
Electron: 42.2.0
ElectronBuildId: 14159160
Chromium: 148.0.7778.97
Node.js: 24.15.0
V8: 14.8.178.14-electron.0
OS: Windows_NT arm64 10.0.26200

[mmcfarland]

Thanks @FranckPachot I was actually unaware of this syntax. We'll look into supporting it, but also investigate why/how an internal appears to leak during the failure.