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		<title>MySQL Tutorial/Procedure Function/DETERMINISTIC - История изменений</title>
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		<updated>2026-05-24T03:20:16Z</updated>
		<subtitle>История изменений этой страницы в вики</subtitle>
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		<id>http://www.sqle.ru/index.php?title=MySQL_Tutorial/Procedure_Function/DETERMINISTIC&amp;diff=742&amp;oldid=prev</id>
		<title> в 13:44, 26 мая 2010</title>
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				<updated>2010-05-26T13:44:56Z</updated>
		
		<summary type="html">&lt;p&gt;&lt;/p&gt;
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				&lt;td colspan=&quot;1&quot; style=&quot;background-color: white; color:black; text-align: center;&quot;&gt;Версия 13:44, 26 мая 2010&lt;/td&gt;
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	<entry>
		<id>http://www.sqle.ru/index.php?title=MySQL_Tutorial/Procedure_Function/DETERMINISTIC&amp;diff=743&amp;oldid=prev</id>
		<title>Admin: 1 версия</title>
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				<updated>2010-05-26T09:53:36Z</updated>
		
		<summary type="html">&lt;p&gt;1 версия&lt;/p&gt;
&lt;p&gt;&lt;b&gt;Новая страница&lt;/b&gt;&lt;/p&gt;&lt;div&gt;== DETERMINISTIC function==&lt;br /&gt;
&lt;br /&gt;
&lt;br /&gt;
&lt;br /&gt;
   &lt;br /&gt;
  &amp;lt;!-- start source code --&amp;gt;&lt;br /&gt;
   &lt;br /&gt;
    &amp;lt;source lang=&amp;quot;sql&amp;quot;&amp;gt;&lt;br /&gt;
mysql&amp;gt;&lt;br /&gt;
mysql&amp;gt; delimiter $$&lt;br /&gt;
mysql&amp;gt;&lt;br /&gt;
mysql&amp;gt; CREATE FUNCTION count_strings&lt;br /&gt;
    -&amp;gt;       (in_string VARCHAR(256),in_substr VARCHAR(128))&lt;br /&gt;
    -&amp;gt;   RETURNS INT&lt;br /&gt;
    -&amp;gt;   DETERMINISTIC&lt;br /&gt;
    -&amp;gt; BEGIN&lt;br /&gt;
    -&amp;gt;   DECLARE l_count INT DEFAULT 0;&lt;br /&gt;
    -&amp;gt;   DECLARE l_start INT DEFAULT 1;&lt;br /&gt;
    -&amp;gt;   DECLARE l_pos   INT;&lt;br /&gt;
    -&amp;gt;&lt;br /&gt;
    -&amp;gt;   MainLoop:&lt;br /&gt;
    -&amp;gt;   LOOP&lt;br /&gt;
    -&amp;gt;     SET l_pos=LOCATE(in_substr,in_string,l_start);&lt;br /&gt;
    -&amp;gt;     IF l_pos=0 THEN&lt;br /&gt;
    -&amp;gt;        LEAVE MainLoop;&lt;br /&gt;
    -&amp;gt;     ELSE&lt;br /&gt;
    -&amp;gt;       SET l_count=l_count+1;&lt;br /&gt;
    -&amp;gt;       SET l_start=l_pos+1;&lt;br /&gt;
    -&amp;gt;     END IF;&lt;br /&gt;
    -&amp;gt;&lt;br /&gt;
    -&amp;gt;   END LOOP;&lt;br /&gt;
    -&amp;gt;   RETURN(l_count);&lt;br /&gt;
    -&amp;gt; END$$&lt;br /&gt;
Query OK, 0 rows affected (0.00 sec)&lt;br /&gt;
mysql&amp;gt;&lt;br /&gt;
mysql&amp;gt; delimiter ;&lt;br /&gt;
mysql&amp;gt; select count_strings(&amp;quot;asdf,asdfasdff,asdf,asdfasdf,&amp;quot;,&amp;quot;asd&amp;quot;);&lt;br /&gt;
+------------------------------------------------------+&lt;br /&gt;
| count_strings(&amp;quot;asdf,asdfasdff,asdf,asdfasdf,&amp;quot;,&amp;quot;asd&amp;quot;) |&lt;br /&gt;
+------------------------------------------------------+&lt;br /&gt;
|                                                    6 |&lt;br /&gt;
+------------------------------------------------------+&lt;br /&gt;
1 row in set (0.02 sec)&lt;br /&gt;
mysql&amp;gt; drop function count_strings;&lt;br /&gt;
Query OK, 0 rows affected (0.00 sec)&lt;br /&gt;
mysql&amp;gt;&lt;br /&gt;
mysql&amp;gt;&amp;lt;/source&amp;gt;&lt;/div&gt;</summary>
		<author><name>Admin</name></author>	</entry>

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