diff options
| author | Alexander Korotkov | 2025-07-29 07:41:13 +0000 |
|---|---|---|
| committer | Alexander Korotkov | 2025-07-29 07:41:13 +0000 |
| commit | c2c2c7e225669e81f83a5db3f0f57131cdaa4a2d (patch) | |
| tree | 2ba219f3c81d4b59a6e0619ff9a030fa58705a0a | |
| parent | 4bc62b86849065939a6b85273fece6b92d6e97bf (diff) | |
Clarify documentation for the initcap function
This commit documents differences in the definition of word separators for
the initcap function between libc and ICU locale providers.
Backpatch to all supported branches.
Discussion: https://postgr.es/m/804cc10ef95d4d3b298e76b181fd9437%40postgrespro.ru
Author: Oleg Tselebrovskiy <o.tselebrovskiy@postgrespro.ru>
Backpatch-through: 13
| -rw-r--r-- | doc/src/sgml/func.sgml | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/doc/src/sgml/func.sgml b/doc/src/sgml/func.sgml index de5b5929ee0..74a16af04ad 100644 --- a/doc/src/sgml/func.sgml +++ b/doc/src/sgml/func.sgml @@ -3148,8 +3148,11 @@ SELECT NOT(ROW(table.*) IS NOT NULL) FROM TABLE; -- detect at least one null in </para> <para> Converts the first letter of each word to upper case and the - rest to lower case. Words are sequences of alphanumeric - characters separated by non-alphanumeric characters. + rest to lower case. When using the <literal>libc</literal> locale + provider, words are sequences of alphanumeric characters separated + by non-alphanumeric characters; when using the ICU locale provider, + words are separated according to + <ulink url="https://www.unicode.org/reports/tr29/#Word_Boundaries">Unicode Standard Annex #29</ulink>. </para> <para> <literal>initcap('hi THOMAS')</literal> |