Re: BUG #18510: jsonpath does not support trailing backslash at the end of the query
| От | Lex Vorona |
|---|---|
| Тема | Re: BUG #18510: jsonpath does not support trailing backslash at the end of the query |
| Дата | |
| Msg-id | CAL_Jc-GS93kStpeJhuuWrpWZx=v85SDorVvNH+OO9vMfS9bFmQ@mail.gmail.com обсуждение исходный текст |
| Ответ на | Re: BUG #18510: jsonpath does not support trailing backslash at the end of the query ("David G. Johnston" <david.g.johnston@gmail.com>) |
| Список | pgsql-bugs |
Thank you. The bug can be closed then and I will make sure I have enough slashes coming through. The query originates in a Java string, meaning it will be eight trailing slashes to match.
Thanks again for a quick response.
-- Lex
On Fri, Jun 14, 2024 at 1:32 PM David G. Johnston <david.g.johnston@gmail.com> wrote:
On Fri, Jun 14, 2024 at 1:24 PM PG Bug reporting form <noreply@postgresql.org> wrote:The following bug has been logged on the website:
Bug reference: 18510
Logged by: Lex Vorona
Email address: voronaam@gmail.com
PostgreSQL version: 16.3
Operating system: Linux (Ubuntu)
Description:
postgres=# select '$.field ? (@ like_regex "a\\")'::jsonpath; -- does not
work
ERROR: invalid regular expression: invalid escape \ sequence
LINE 1: select '$.field ? (@ like_regex "a\\")'::jsonpath;It is working just fine. It sees both the regex and the backslash character and then helpfully tells you that the regex you wrote is bogus since the backslash you wrote isn't escaping anything.If you need a literal backslash in a jsonpath string literal you need to write four of them. Each pair leaves one \ in the regex and then \\ in a regex is just a literally matched character.David J.
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