Re: Some questions about the array.
| От | YUriy Zhuravlev |
|---|---|
| Тема | Re: Some questions about the array. |
| Дата | |
| Msg-id | 2140159.HH0D5mDkSl@dinodell обсуждение исходный текст |
| Ответ на | Re: Some questions about the array. (Robert Haas <robertmhaas@gmail.com>) |
| Ответы |
Re: Some questions about the array.
|
| Список | pgsql-hackers |
On Sunday 08 November 2015 16:49:20 you wrote:
> I'm not necessarily objecting to that, but it's not impossible that it
> could break something for some existing user. We can decide not to
> care about that, though.
We had an idea. You can use ~ to convert the index to the array which always
starts with 0. Then we can use negative indexes, and you can always find the
beginning of the array.
Example:
we have array [-3:3]={1,2,3,4,5,6,7}
array[~0] == 1
array[~-1] == 7
array[~2:~-2] == {3,4,5,6}
What do you think?
--
YUriy Zhuravlev
Postgres Professional: http://www.postgrespro.com
The Russian Postgres Company
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