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Documentation improvement for pg_trgm

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Documentation of word_similarity() and strict_word_similarity() functions
contains some vague wordings which could confuse users.  This patch makes
those wordings more clear.  word_similarity() was introduced in PostgreSQL 9.6,
and corresponding part of documentation needs to be backpatched.

Author: Bruce Momjian, Alexander Korotkov
Discussion: https://postgr.es/m/20180526165648.GB12510%40momjian.us
Backpatch: 9.6, where word_similarity() was introduced
This commit is contained in:
Alexander Korotkov 2018-06-13 18:31:18 +03:00
parent 2ce64caaf7
commit 476ba1ec98
1 changed files with 2 additions and 2 deletions
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4
doc/src/sgml/pgtrgm.sgml
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@ -153,8 +153,8 @@
This function returns a value that can be approximately understood as the
greatest similarity between the first string and any substring of the second
string. However, this function does not add padding to the boundaries of
the extent. Thus, a whole word match gets a higher score than a match with
a part of the word.
the extent. Thus, the number of additional characters present in the
second string is not considered, except for the mismatched word boundry.
</para>
<table id="pgtrgm-op-table">