rdelaage
/
postgresql
mirror of https://git.postgresql.org/git/postgresql.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

Improve documentation example for jsonpath like_regex operator 

Make sample like_regex match string values of the root object instead of the
whole document.  The corrected example seems to represent a more relevant
use case.

Backpatch to 12, when jsonpath was introduced.

Discussion: https://postgr.es/m/13440f8b-4c1f-5875-c8e3-f3f65606af2f%40xs4all.nl
Author: Erik Rijkers
Reviewed-by: Michael Paquier, Alexander Korotkov
Backpatch-through: 12
This commit is contained in:
Alexander Korotkov 2021-05-13 16:10:21 +03:00
parent a784859f44
commit 9b7286c2b3
1 changed files with 3 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
doc/src/sgml/func.sgml
View File

@ -17130,9 +17130,10 @@ $[*] ? (@ like_regex "^[aeiou]" flag "i")
is a JSON path string literal, written according to the rules given in is a JSON path string literal, written according to the rules given in
<xref linkend="datatype-jsonpath"/>. This means in particular that any <xref linkend="datatype-jsonpath"/>. This means in particular that any
backslashes you want to use in the regular expression must be doubled. backslashes you want to use in the regular expression must be doubled.
For example, to match strings that contain only digits: For example, to match string values of the root document that contain
only digits:
<programlisting> <programlisting>
$ ? (@ like_regex "^\\d+$") $.* ? (@ like_regex "^\\d+$")
</programlisting> </programlisting>
</para> </para>
</sect3> </sect3>