postgresql/doc
Tom Lane b9cf94c8c2 Doc: improve documentation around jsonpath regular expressions.
Provide some documentation about the differences between XQuery
regular expressions and those supported by Spencer's regex engine.
Since SQL now exposes XQuery regexps with the LIKE_REGEX operator,
I made this a standalone section designed to help somebody who
has to translate a LIKE_REGEX query to Postgres.  (Eventually we might
extend Spencer's engine to allow precise implementation of XQuery,
but not today.)

Reference that in the jsonpath docs, provide definitions of the
XQuery flag letters, and add a description of the JavaScript-inspired
string literal syntax used within jsonpath.  Also point out explicitly
that backslashes used within like_regex patterns will need to be doubled.

This also syncs the docs with the decision implemented in commit
d5b90cd64 to desupport XQuery's 'x' flag for now.

Jonathan Katz and Tom Lane

Discussion: https://postgr.es/m/CAPpHfdvDci4iqNF9fhRkTqhe-5_8HmzeLt56drH%2B_Rv2rNRqfg@mail.gmail.com
2019-09-19 11:22:21 -04:00
..
src Doc: improve documentation around jsonpath regular expressions. 2019-09-19 11:22:21 -04:00
KNOWN_BUGS
Makefile Remove maintainer-check target, fold into normal build 2013-10-10 20:11:56 -04:00
MISSING_FEATURES Remove extra newlines at end and beginning of files, add missing newlines 2010-08-19 05:57:36 +00:00
TODO Change documentation references to PG website to use https: not http: 2017-05-20 21:50:47 -04:00