Обсуждение: Example numeric constants aren't valid?
The following documentation comment has been logged on the website: Page: https://www.postgresql.org/docs/16/sql-syntax-lexical.html Description: Hi, Re. Docs page: https://www.postgresql.org/docs/current/sql-syntax-lexical.html#SQL-SYNTAX-CONSTANTS-NUMERIC I noticed that the following are specified as valid numeric constants: 1_500_000_000 0b10001000_00000000 0o_1_755 0xFFFF_FFFF 1.618_034 So I'd expect something like: SELECT 1.618_034; ...to return 1.618034? But instead I get 1.618. And: SELECT 1_500_000_000::text; ...results in a: ERROR: syntax error at or near "::" Which seems at odds to what the docs say: "For visual grouping, underscores can be inserted between digits. These have no further effect on the value of the constant." I'm left not really understanding how to use _ in numerical constants? Tim
On 10/6/23 20:49, PG Doc comments form wrote: > > I'm left not really understanding how to use _ in numerical constants? You are reading the documentation for 16, but you are using 14 or lower. If you want this functionality, you need to upgrade your server. -- Vik Fearing
Oh goodness, sorry Vik.
On Mon, Oct 9, 2023 at 11:37 AM Vik Fearing <vik@postgresfriends.org> wrote:
On 10/6/23 20:49, PG Doc comments form wrote:
>
> I'm left not really understanding how to use _ in numerical constants?
You are reading the documentation for 16, but you are using 14 or lower.
If you want this functionality, you need to upgrade your server.
--
Vik Fearing