Re: BUG #14089: ON CONFLICT allows function variables in index expressions

On Friday, April 15, 2016, Alex Bolenok  wrote:

> The function should not even compile, as the INSERT query before it does
> not:
>
> test=# INSERT INTO test (value) SELECT * FROM (VALUES (1)) q (n) ON
> CONFLICT
> (value, (n)) DO NOTHING;
> ERROR:  column "n" does not exist
>
> The parser should only allow the target table's column names and constants
> in the index expression, as it does when creating the index. A variable
> name is neither.
>
>
The parsed insert never see the letter "n".  Once you comprehend that fact
your statement is true - because of the word "constant".  That constant is
why it compiles.

David J.