huaxingao commented on a change in pull request #28428:
URL: https://github.com/apache/spark/pull/28428#discussion_r418437023
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File path: docs/sql-ref-syntax-aux-show-functions.md
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@@ -60,11 +60,12 @@ SHOW [ function_kind ] FUNCTIONS ( [ LIKE ] function_name |
regex_pattern )
<dd>
Specifies a regular expression pattern that is used to filter the results
of the
statement.
- <ul>
- <li>Only <code>*</code> and <code>|</code> are allowed as wildcard
pattern.</li>
- <li>Excluding <code>*</code> and <code>|</code>, the remaining pattern
follows the regular expression semantics.</li>
- <li>The leading and trailing blanks are trimmed in the input pattern
before processing. The pattern match is case-insensitive.</li>
- </ul>
+ <ul>
+ <li>Except for <code>*</code> and <code>|</code> character, the pattern
works like a regular expression.</li>
+ <li><code>*</code> alone matches 0 or more characters and
<code>|</code> is used to separate multiple different regular expressions,
+ any of which can match. </li>
+ <li>The leading and trailing blanks are trimmed in the input pattern
before processing. The pattern match is case-insensitive.</li>
+ </ul>
Review comment:
Change to the same description of ```regex_pattern``` as the one used
in SHOW TABLE EXTENDED, SHOW TABLES, SHOW VIEWS.
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