Обсуждение: Explicit or implicit?

The following documentation comment has been logged on the website:

Page: https://www.postgresql.org/docs/13/textsearch-intro.html
Description:

https://www.postgresql.org/docs/13/textsearch-intro.html

"The @@ operator also supports text input, allowing explicit conversion of a
text string to tsvector or tsquery to be skipped in simple cases."I believe
that the text is saying implicit, but uses the word "explicit" instead. Is
this a typo? Thanks.

PG Doc comments form <noreply@postgresql.org> writes:
> "The @@ operator also supports text input, allowing explicit conversion of a
> text string to tsvector or tsquery to be skipped in simple cases."I believe
> that the text is saying implicit, but uses the word "explicit" instead. Is
> this a typo? Thanks.

I think it's intended.  The point is that instead of, say,

    tsvector_column @@ 'query here'::tsquery

you could just write

    tsvector_column @@ 'query here'

            regards, tom lane

On Sun, 2021-11-21 at 12:50 -0500, Tom Lane wrote:
> PG Doc comments form <noreply@postgresql.org> writes:
> > "The @@ operator also supports text input, allowing explicit conversion of a
> > text string to tsvector or tsquery to be skipped in simple cases."I believe
> > that the text is saying implicit, but uses the word "explicit" instead. Is
> > this a typo? Thanks.
> 
> I think it's intended.  The point is that instead of, say,
> 
>         tsvector_column @@ 'query here'::tsquery
> 
> you could just write
> 
>         tsvector_column @@ 'query here'

Right.  You can skip the explicit conversion of adding a type cast.

Yours,
Laurenz Albe