Native cloud deployment on Azure is not available for this version of Exasol, but you can install Exasol as a Linux application on Azure instances. For more information, see Installation.

Native cloud deployment on Google Cloud is not available for this version of Exasol, but you can install Exasol as a Linux application on Google Cloud instances. For more information, see Installation.

Update of regular expression library

Details

Detail name	Value
Changelog Number	20854
Type	Improvement
Status	Resolved
Fix Versions	Exasol 2025.1.0
Resolution Date	2025-07-08

Background

Exasol database relies on library with implementation of compiling of regular expressions and matching strings against these patterns (see also Regular expressions).

Improvement

Upgraded the regular expression library from PCRE to PCRE2 10.44.

Impact

This update affects the following functions within the Exasol database:

REGEXP_INSTR
REGEXP_REPLACE
REGEXP_SUBSTR
[NOT] REGEXP_LIKE

Changed Behavior

As Exasol relies on library with implementation of compiling of regular expressions and matching string against these patterns, there might be changed behavior. For details refer to documentation on the PCRE2 syntax and PCRE syntax pages.

Changed behavior

Regular expression library was upgraded from PCRE to PCRE2 10.44., so there might be changed behavior. For details refer to documentation on the PCRE2 syntax: http://pcre.org/current/doc/html/pcre2syntax.html and PCRE syntax: http://pcre.org/original/doc/html/pcresyntax.html.