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mysql 5.0´æ´¢¹ý³Ìѧϰ×ܽá

mysql 5.0´æ´¢¹ý³Ìѧϰ×ܽá
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1.»ù±¾Óï·¨£º
create procedure sp_name()
begin
………
end
2.²ÎÊý´«µÝ
¶þ.µ÷Óô洢¹ý³Ì
1.»ù±¾Óï·¨£ºcall sp_name()
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1.»ù±¾Óï·¨£º
drop procedure sp_name//
2.×¢ÒâÊÂÏî
(1)²»ÄÜÔÚÒ»¸ö´æ´¢¹ý³ÌÖÐɾ³ýÁíÒ»¸ö´æ´¢¹ý³Ì£¬Ö»Äܵ÷ÓÃÁíÒ»¸ö´æ´¢¹ý³Ì
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1.Çø¿é¶¨Ò壬³£ÓÃ
begin
……
end;
Ò²¿ÉÒÔ¸øÇø¿éÆð±ðÃû£¬È磺
lable:begin
………..
end lable;
¿ÉÒÔÓÃleave lable;Ìø³öÇø¿é£¬Ö´ÐÐÇø¿éÒÔºóµÄ´úÂë
2.Ìõ¼þÓï¾ä
if Ìõ¼þ then
statement
else
statement
end if;
3.Ñ­»·Óï¾ä
(1).whileÑ­»·
[label:] WHILE expression DO

statements

END WHILE [label] ;
(2).loopÑ­»·
[label:] LOOP

statements

END LOOP [label];
(3).repeat untilÑ­»·
[label:] REPEAT

statements

UNTIL expression

END REPEAT [label] ;
Îå.ÆäËû³£ÓÃÃüÁî
1.show procedure status
ÏÔʾÊý¾Ý¿âÖÐËùÓд洢µÄ´æ´¢¹ý³Ì»ù±¾ÐÅÏ¢£¬°üÀ¨ËùÊôÊý¾Ý¿â£¬´æ´¢¹ý³ÌÃû³Æ£¬´´½¨Ê±¼äµÈ
2.show create procedure sp_name
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mysql´æ´¢¹ý³ÌÖÐÒªÓõ½µÄÔËËã·û
mysql´æ´¢¹ý³Ìѧϰ×ܽᣭ²Ù×÷·û
ËãÊõÔËËã·û
+     ¼Ó   SET var1=2+2;       4
-     ¼õ   SET var2=3-2;       1
*     ³Ë   SET var3=3*2;       6
/     ³ý   SET var4=10/3;      3.3333
DIV   Õû³ý SET var5=10 DIV 3;  3
%     ȡģ SET var6=10%3 ;     1
±È½ÏÔËËã·û
>            ´óÓÚ 1>2 False
<            СÓÚ 2<1 False
<=           СÓÚµÈÓÚ 2<=2 True
>= &nb


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DBHOST="127.0.0.1"
DBPWD="pwd"
DBUSER="root"
MYSQLBIN="/usr/local/mysql/bin/mysql"
for((dbindex = 0;dbindex < 100;dbindex++))
do
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   do
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ɾ³ýMYSQl BIN LOG ÈÕÖ¾

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mysql> show binary logs;
+----------------+-----------+
| Log_name | File_size |
+----------------+-----------+
| ablelee.000001 | 150462942 |
| ablelee.000002 | 125 |
| ablelee.000003 | 106 |
+----------------+-----------+
2.ɾ³ýbin-log(ɾ³ýablelee.000003֮ǰµÄ¶øÃ»Óаüº¬ablel ......

mysqlÖÐINSTRº¯ÊýµÄÓ÷¨

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INSTR(×Ö¶ÎÃû, ×Ö·û´®)
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SELECT * from tblTopic ORDER BY INSTR( topicTitle, 'ha' ) > 0 DESC
SELECT INSTR( topicTitle, 'ha' ) from tblTopic
mysqlÖÐʹÓÃinstrÅäºÏINÅÅÐò
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1£º ASCII(str) ¡¡·µ»Ø×Ö·û´®strµÄµÚÒ»¸ö×Ö·ûµÄASCIIÖµ(strÊǿմ®Ê±·µ»Ø0) mysql> select ASCII('2'); ¡¡¡¡-> 50 mysql> select ASCII(2); ¡¡¡¡-> 50 mysql> select ASCII('dete'); ¡¡¡¡-> 100
2£ºORD(str) ¡¡Èç¹û×Ö·û´®str¾äÊ×Êǵ¥×Ö½Ú·µ»ØÓëASCII()º¯Êý·µ»ØµÄÏàֵͬ¡£¡¡Èç¹ûÊÇÒ»¸ö¶à×Ö½Ú×Ö·û,ÒÔ¸ñʽ·µ ......

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