mysql ÀÛ¼ÓÔËËã - ÆäËûÊý¾Ý¿â¿ª·¢ / MySQL/Postgresql
sp ³ÌÐò
delimiter //
create procedure ma()
begin
declare i int default 0;
while i<11 do
set i=i+1;
select i;
end while;
end //
delimiter ;
1+2+...+9+10
ΪʲôÕâ¸ö³ÌÐòÎÞ·¨ÊµÏÖÀÛ¼ÓЧ¹û
//Çë˵Ã÷Õâ¸ö³ÌÐòµÄȱÏݺ͸Ľø·½·¨¡£¡£Ð»Ð»¸÷λ´ó¸ç
SQL code:
mysql> call ma();
+------+
| j |
+------+
| 55 |
+------+
1 row in set (0.00 sec)
Query OK, 0 rows affected (0.00 sec)
˳±ãÎÊÒ»ÏÂ
SQL code:
delimiter //
create procedure test07()
begin
declare i int ;
set i=1; --Õâ¸öµØ·½ÉèÖóÉi=1 ¿ÉÒÔÊäÈëµã¶«Î÷¡£¡£µ«ÊÇi=0ΪʲôÊÇÎÞÏÞÑ»·£¿
while i<10 do
set i=i+1;
select i;
end while;
end //
delimiter ;
º¹£¬Äã±¾ÉíµÄ³ÌÐòÊÇÍù±äÁ¿IÒ»Ö±ÀÛ¼Ó1¡£ ×Ðϸ¿´Ï¾ÍÃ÷°×ÁË¡£
Ïà¹ØÎÊ´ð£º
ÇëÎÊÏÂÄܲ»ÄÜÔÙwindows϶¨ÆÚÇå¿ÕmysqlÒ»¸ö±íÖеÄÈ«²¿Êý¾Ý£¬ÓÃPHPʵÏÖ£¡
лл¸÷λÁË
¾Í±ÈÈçÒ»¸öÐÇÆÚÇå¿ÕÒ»´Î
±ÈÈçÿ¸öÐÇÆÚÁùÁãµãÇå¿ÕÒ»´Î£¡
ллÁË
¼Æ»®ÈÎÎñ...php....sql...truncate....OK
Äã¾ÍÕâ½ÓÔÚҳà ......
ÎÒÓõÄÊÇÁ¬½Ó³Ø×öµÄ£¬ÅäÁ¬½Ó³ØµÄ·½·¨Ó¦¸ÃûÓÐ´í£¬ÎªÊ²¾ÍÊdzöÏÖÕâÖÖÎÊÌâ
javax.servlet.ServletException: javax.naming.NameNotFoundException: No object bound to name java:comp/env/test
ÇëÎÊ´óÏÀÃÇÕâÊÇÔ ......
¸÷λÐÖµÜÇë½Ì Ï£¬ÔÚmysqlÖÐÄܲ»ÄÜʵÏÖÕâÑùÒ»¸ö¹¦ÄÜ£¬
Ò»¸ö×Ö¶ÎAÊÇ´¢´æÒ»´ó¶ÎÎÄ×ÖÄÚÈݵģ¬ÊÇÓ¢ÎÄ£¬Äܲ»ÄÜͨ¹ýMYSQLµÄ²éѯ֮ÀàµÄ¹¦ÄÜ£¬À´»ñµÃÕâ¸ö×Ö¶ÎÖÐ ³öÏÖƵÂÊ×î¸ßµÄÊ®¸öµ¥´Ê£¬²¢½«ÕâÊ®¸öµ¥´Ê×öΪеÄ×ֶδ¢´æ
a ......
3̨µçÄÔ£¬ÆäÖÐһ̨×÷ΪMYSQL·þÎñÆ÷£¬ÁíÍâ2̨ΪTOMCAT·þÎñÆ÷¡£
MYSQL·þÎñÆ÷ÀïÓÐÒ»Ìõ¼Ç¼£¬ IDΪ10.
ÏÖÔÚ2̨TOMCATͬʱ£¨100%£©·¢ÆðÐÞ¸ÄMYSQLÀïIDΪ10µÄÄÇÌõ¼Ç¼£¬±ÈÈçÐ޸ĴËID¼Ç¼ÀïijһÏîµÄÄÚÈÝ¡£ ±ÈÈçTOMCAT 1Ò ......
Java code:
com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: The last packet successfully received from the server was51093 seconds ago.The last packet sent successfully to the server was 5 ......