opposite of chr(int)

Поиск
Список
Период
Сортировка
От Henry Drexler
Тема opposite of chr(int)
Дата
Msg-id CAAtgU9RKaT9WQhhZAcMoqJG0rxL-gudB=CwUUOnxORmwuWub=w@mail.gmail.com
обсуждение исходный текст
Ответы Re: opposite of chr(int)
Re: opposite of chr(int)
Список pgsql-novice
Looking at the string functions on:

I only see chr(int) and not something like int(chr).

reading through the others on that page i do not see a int(chr)

the goal is to tell whether or not a character in a string is an integer or not

my current workaround is this:

select
case
when substring('wallawa9kl',8,1) = '0' then 'true'
when substring('wallawa9kl',8,1) = '1' then 'true'
when substring('wallawa9kl',8,1) = '2' then 'true'
when substring('wallawa9kl',8,1) = '3' then 'true'
when substring('wallawa9kl',8,1) = '4' then 'true'
when substring('wallawa9kl',8,1) = '5' then 'true'
when substring('wallawa9kl',8,1) = '6' then 'true'
when substring('wallawa9kl',8,1) = '7' then 'true'
when substring('wallawa9kl',8,1) = '8' then 'true'
when substring('wallawa9kl',8,1) = '9' then 'true'
else 'false'
end


just wondering if there is something more compact or if this is an okay workaround solution.

В списке pgsql-novice по дате отправления:

Предыдущее
От: Tony Theodore
Дата:
Сообщение: Re: Using regoper type with OPERATOR()
Следующее
От: Gary Chambers
Дата:
Сообщение: Re: opposite of chr(int)