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create procedure getInfor2()
BEGIN
declare _abc varchar(200);
declare stopFlag int;
DECLARE cursor_name CURSOR
FOR
select zhuanyuan from server;
DECLARE CONTINUE HANDLER FOR NOT FOUND set stopFlag=1;
OPEN cursor_name;
REPEAT
FETCH cursor_name INTO _abc;
begin
if _abc='root'
then
insert t(s1) values(3333);
end if;
end;
UNTIL stopFlag = 1
END REPEAT;
CLOSE cursor_name;
END;


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mysql״̬ status

http://blog.163.com/mysqldba@126/blog/static/1315356342009931103834396/
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http://dev.mysql.com/doc/refman/5.1/en/server-status-variables.html
mysql> show status;
Com_xxx
Óï¾ä¼ÆÊý±äÁ¿±íʾÿ¸öxxx ......

EJB3+JBOSS4+mySQL²¿Êð·½Ê½

1¡¢Ð½¨Êý¾ÝÔ´Îļþmysql-ds.xml,ÎļþÄÚÈÝÈçÏ£º
<?xml version="1.0" encoding="UTF-8"?>
<datasources>
  <local-tx-datasource>
    <jndi-name>MySqlDS</jndi-name>
    <connection-url>jdbc:mysql://localhost:3306/mydatabase?useUnico ......

MYSQL×Ô´ø¹¤¾ßQuery ProfilerʹÓÃ

Query ProfilerÊÇMYSQL×Ô´øµÄÒ»ÖÖqueryÕï¶Ï·ÖÎö¹¤¾ß£¬Í¨¹ýËü¿ÉÒÔ·ÖÎö³öÒ»ÌõSQLÓï¾äµÄÐÔÄÜÆ¿¾±ÔÚʲôµØ·½¡£Í¨³£ÎÒÃÇÊÇʹÓõÄexplain,ÒÔ¼°slow query log¶¼ÎÞ·¨×öµ½¾«È··ÖÎö£¬µ«ÊÇQuery ProfilerÈ´¿ÉÒÔ¶¨Î»³öÒ»ÌõSQLÓï¾äÖ´Ðеĸ÷ÖÖ×ÊÔ´ÏûºÄÇé¿ö£¬±ÈÈçCPU£¬IOµÈ£¬ÒÔ¼°¸ÃSQLÖ´ÐÐËùºÄ·ÑµÄʱ¼äµÈ¡£²»¹ý¸Ã¹¤¾ßÖ»ÓÐÔÚMYSQL 5.0.37ÒÔ ......

MySQLѧϰ(3) ÊÓͼ£¬Óα꣬Óï¾ä¿é¶ù

1.MySQL´´½¨ÊÓͼµÄ¼òµ¥Óï¾äΪ£ºCREATE VIEW view_name  AS SELECT * from TABLE_NAME;
²»ÄܶԴ¥·¢Æ÷´´½¨ÊÓͼ(VIEW)¡£µ«ÊÇÔÚ5.1.4ÖÐÊÇÕâÑùÃèÊöµÄ£¬A view can be created from many kinds of SELECT statements. It can refer to base tables or other views. It can use joins, UNION, and subqueries¡£´óÖÂÒâ˼ÊÇÊÓÍ ......

mysql errno: 150 ´íÎó Íâ¼ü

ERROR 1005 (HY000): Can't create table '  ****.frm' (errno: 150)
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4¡¢×Ö¶ÎÀàÐÍ£¨ËµÃ÷£©ÒªÒ»Ñù`itemId` varchar( ......
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