Re: [GENERAL] Puzzled by UNION with unknown types

Thanks Tom! -- AGENCY Software A Free Software data system By and for non-profits *http://agency-software.org/ * *https://agency-software.org/demo/client * ken.tan...@agency-software.org (253) 245-3801 Subscribe to the mailing

Re: [GENERAL] Puzzled by UNION with unknown types

Ken Tanzer writes: > Hi. I've solved my practical problems, and I know unknown types are > just bad, but am still curious about why some of these cause errors, > and others don't. > ag_consulting=> SELECT * FROM (SELECT '1'::unknown) foo UNION ALL > SELECT * FROM (SELECT '1'::unknown) bar; > ERR