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| author | Alexander Korotkov <akorotkov@postgresql.org> | 2021-05-13 16:10:21 +0300 |
|---|---|---|
| committer | Alexander Korotkov <akorotkov@postgresql.org> | 2021-05-13 16:21:59 +0300 |
| commit | f0d20e5973a26207c0e8efbb09e0b1cf7c27cc64 (patch) | |
| tree | 319a2f3664a5e9b27f0775f8b1ecb6671b4417a0 /doc/src | |
| parent | 6e9723cde5c672bb55ed803fc42720d0a46ce03c (diff) | |
| download | postgresql-f0d20e5973a26207c0e8efbb09e0b1cf7c27cc64.tar.gz postgresql-f0d20e5973a26207c0e8efbb09e0b1cf7c27cc64.zip | |
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
Diffstat (limited to 'doc/src')
| -rw-r--r-- | doc/src/sgml/func.sgml | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/doc/src/sgml/func.sgml b/doc/src/sgml/func.sgml index bdc2ab54845..038744a27fc 100644 --- a/doc/src/sgml/func.sgml +++ b/doc/src/sgml/func.sgml @@ -13238,9 +13238,10 @@ strict $.**.HR is a JSON path string literal, written according to the rules given in <xref linkend="datatype-jsonpath"/>. This means in particular that any backslashes you want to use in the regular expression must be doubled. - For example, to match strings that contain only digits: + For example, to match string values of the root document that contain + only digits: <programlisting> -'$ ? (@ like_regex "^\\d+$")' +$.* ? (@ like_regex "^\\d+$") </programlisting> </para> |