srowen commented on a change in pull request #25561: [SPARK-28810][DOC][SQL]
Document SHOW TABLES in SQL Reference.
URL: https://github.com/apache/spark/pull/25561#discussion_r332978989
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File path: docs/sql-ref-syntax-aux-show-tables.md
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@@ -38,10 +38,13 @@ SHOW TABLES [{FROM|IN} database_name] [LIKE
'regex_pattern']
</dd>
<dt><code><em>LIKE 'regex_pattern'</em></code></dt>
<dd>
- Specifies the regex pattern that is used to filter out unwanted tables.
- <br> - The pattern is a regex except `*` and `|`characters
- <br> - `*` matches 0 or more characters and `|` used to provide more
than one regex with OR condition
- <br> - The leading and trailing blanks are trimmed in the input pattern
before processing.
+ Specifies the regular expression pattern that is used to filter out
unwanted tables.
+ <ul>
+ <li> Except `*` and `|` characters remaining characters will follow
the regular expression convention.</li>
+ <li> `*` matches 0 or more characters and `|` used to provide more
than one regex with OR condition. </li>
Review comment:
"`*` alone matches 0 or more characters, and `|` is used to separate
multiple different regexes, any of which can match"
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