Muris Pucic wrote:
> -- The query below works, even though there is no column "first_name" in
> TABLE2. This should return an error but it does not, it returns all rows
> from TABLE1. This query should not evaluate correctly even when aliases are
> not used because it can be misleading.
>
> SELECT * FROM TABLE1 WHERE first_name IN (SELECT first_name FROM TABLE2)
This is per spec -- first_name inside the subselect refers to the outer
TABLE1. Misleading, yes.
--
Alvaro Herrera http://www.CommandPrompt.com/
The PostgreSQL Company - Command Prompt, Inc.
