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manual.texi fix tutorial examples that become incorrect when

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manual.texi	REGEXP became case insensitive.
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paul@central.snake.net 2001-02-01 19:09:37 -06:00
parent 2165d185b7
commit dec736400a
1 changed files with 21 additions and 5 deletions
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Docs/manual.texi
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@ -24782,10 +24782,10 @@ To demonstrate how extended regular expressions work, the @code{LIKE} queries
shown above are rewritten below to use @code{REGEXP}.
To find names beginning with @samp{b}, use @samp{^} to match the beginning of
the name and @samp{[bB]} to match either lowercase or uppercase @samp{b}:
the name:
@example
mysql> SELECT * FROM pet WHERE name REGEXP "^[bB]";
mysql> SELECT * FROM pet WHERE name REGEXP "^b";
+--------+--------+---------+------+------------+------------+
| name | owner | species | sex | birth | death |
+--------+--------+---------+------+------------+------------+
@ -24794,6 +24794,23 @@ mysql> SELECT * FROM pet WHERE name REGEXP "^[bB]";
+--------+--------+---------+------+------------+------------+
@end example
Prior to MySQL 3.23.4, @code{REGEXP} is case sensitive, and the previous
query will return no rows. To match either lowercase or uppercase @samp{b},
use this query instead:
@example
mysql> SELECT * FROM pet WHERE name REGEXP "^[bB]";
@end example
From MySQL 3.23.4 on, to force a @code{REGEXP} comparison to be case
sensitive, use the @code{BINARY} keyword to make one of the strings a
binary string. This query will match only lowercase @samp{b} at the
beginning of a name:
@example
mysql> SELECT * FROM pet WHERE name REGEXP BINARY "^b";
@end example
To find names ending with @samp{fy}, use @samp{$} to match the end of the
name:
@ -24807,11 +24824,10 @@ mysql> SELECT * FROM pet WHERE name REGEXP "fy$";
+--------+--------+---------+------+------------+-------+
@end example
To find names containing a @samp{w}, use
@samp{[wW]} to match either lowercase or uppercase @samp{w}:
To find names containing a lowercase or uppercase @samp{w}, use this query:
@example
mysql> SELECT * FROM pet WHERE name REGEXP "[wW]";
mysql> SELECT * FROM pet WHERE name REGEXP "w";
+----------+-------+---------+------+------------+------------+
| name | owner | species | sex | birth | death |
+----------+-------+---------+------+------------+------------+