Thread

BUG #19342: ERROR: function gcd(smallint, smallint) is not unique

PG Bug reporting form <noreply@postgresql.org> — 2025-12-02T13:02:53Z

The following bug has been logged on the website:

Bug reference:      19342
Logged by:          Jason Smith
Email address:      dqetool@126.com
PostgreSQL version: 18.0
Operating system:   Ubuntu 22.04
Description:        

Run the following statements, where the error may be not expected.
```sql
CREATE TABLE t1 (c1 SMALLINT);
SELECT (gcd(c1, c1)) FROM t1; -- ERROR: function gcd(smallint, smallint) is
not unique
```