Обсуждение: BUG #15317: Sort order error
The following bug has been logged on the website: Bug reference: 15317 Logged by: sumit pahwa Email address: pahwa.sumit@gmail.com PostgreSQL version: 10.3 Operating system: Linux Description: Version of Postgres deployed PostgreSQL 10.3 on x86_64-pc-linux-gnu, compiled by gcc (GCC) 4.8.5 20150623 (Red Hat 4.8.5-16), 64-bit When I execute a query select 'ALEX DARGAY' > 'ALEXANDER'; It should return false as output because ascii value of space is lower than ascii value of 'A'. But the output is true, which is incorrect. In a bigger picture, It gives a corrupted sorted order. However, this works fine on PostgreSQL 10.4, compiled by Visual C++ build 1800, 64-bit Please suggest. Thanks
On 08/08/18 09:53, PG Bug reporting form wrote: > When I execute a query > select 'ALEX DARGAY' > 'ALEXANDER'; > It should return false as output because ascii value of space is lower than > ascii value of 'A'. > But the output is true, which is incorrect. The correct answer to that query depends on the current locale. You seem to be assuming that POSIX / C locale is used. You can check the current locale's collation order with "show lc_collate;". The locale support is provided by the Operating System, so even if the locale is nominally the same, e.g. "UK English", it might behave slightly differently on different systems. See the user manual, sections 23.1 Locale Support and 23.2 Collation Support for more information: https://www.postgresql.org/docs/10/static/locale.html https://www.postgresql.org/docs/10/static/collation.html - Heikki