Ò׽ؽØÍ¼Èí¼þ¡¢µ¥Îļþ¡¢Ãâ°²×°¡¢´¿ÂÌÉ«¡¢½ö160KB

mysql °¢À­²®Êý×Öת»»ÖÐÎĺ¯Êý

CREATE DEFINER=`root`@`%` FUNCTION `sp_cn`(n_LowerMoney  decimal(15,2)) RETURNS varchar(200) CHARSET utf8
begin
Declare v_LowerStr  VARCHAR(200) ;
Declare v_UpperPart VARCHAR(200) ;
Declare v_UpperStr VARCHAR(200) ;
Declare i_I int ;
set v_LowerStr = LTRIM(RTRIM(ROUND(n_LowerMoney,2 ) ) ) ;
set i_I = 1 ;
set v_UpperStr = '' ;
while ( i_I <=char_length(v_LowerStr ) )  do
set v_UpperPart = CONCAT( case substring(v_LowerStr,char_length(v_LowerStr) - i_I + 1,1 )
WHEN '.' THEN 'Ôª'
WHEN '0' THEN 'Áã'
WHEN '1' THEN 'Ò¼'
WHEN '2' THEN '·¡'
WHEN '3' THEN 'Èþ'
WHEN '4' THEN 'ËÁ'
WHEN '5' THEN 'Îé'
WHEN '6' THEN '½'
WHEN '7' THEN 'Æâ'
WHEN '8' THEN '°Æ'
WHEN '9' THEN '¾Á'
END,
case i_I
WHEN 1 THEN '·Ö'
WHEN 2 THEN '½Ç'
WHEN 3 THEN ''
WHEN 4 THEN ''
WHEN 5 THEN 'ʰ'
WHEN 6 THEN '°Û'
WHEN 7 THEN 'Ǫ'
WHEN 8 THEN 'Íò'
WHEN 9 THEN 'ʰ'
WHEN 10 THEN '°Û'
WHEN 11 THEN 'Ǫ'
WHEN 12 THEN 'ÒÚ'
WHEN 13 THEN 'ʰ'
WHEN 14 THEN '°Û'
WHEN 15 THEN 'Ǫ'
WHEN 16 THEN 'Íò'
ELSE ''
END );
set v_UpperStr =CONCAT( v_UpperPart , v_UpperStr) ;
set i_I = i_I + 1 ;
end while;
set v_UpperStr = REPLACE(v_UpperStr,'Áãʰ','Áã') ;
set v_UpperStr = REPLACE(v_UpperStr,'Áã°Û','Áã') ;
set v_UpperStr = REPLACE(v_UpperStr,'ÁãǪ','Áã') ;
set v_UpperStr = REPLACE(v_UpperStr,'ÁãÁãÁã','Áã') ;
set v_UpperStr = REPLACE(v_UpperStr,'ÁãÁã','Áã') ;
set v_UpperStr = REPLACE(v_UpperStr,'Áã½ÇÁã·Ö','Õû') ;
set v_UpperStr = REPLACE(v_UpperStr,'Áã·Ö','Õû') ;
set v_UpperStr = REPLACE(v_UpperStr,'Áã½Ç','Áã') ;
set v_UpperStr = REPLACE(v_UpperStr,'ÁãÒÚÁãÍòÁãÔª','ÒÚÔª') ;
set v_UpperStr = REPLACE(v_UpperStr,'ÒÚÁãÍòÁãÔª','ÒÚÔª') ;
set v_UpperStr = REPLACE(v_UpperStr,'ÁãÒÚÁãÍò','ÒÚ') ;
set v_UpperStr = REPLACE(v_UpperStr,'ÁãÍòÁãÔª','ÍòÔª') ;
set v_UpperStr = REPLACE(v_UpperStr,'ÍòÁãÔª','ÍòÔª') ;
set v_UpperStr = REPLACE(v_UpperStr,'ÁãÒÚ','ÒÚ') ;
set v_UpperStr = REPLACE(v_UpperStr,'ÁãÍò','Íò') ;
set v_UpperStr = REPLACE(v_UpperStr,'ÁãÔª','Ôª') ;
set v_Up


Ïà¹ØÎĵµ£º

Ö§³ÖMySqlÒ»°Ñ

ÒÔÏÂת×Ô Osss.cn Óʼþ£¬ÇëʹÓùý¡¢ÕýÔÚʹÓûòÕßÖ§³Ö¿ªÔ´µÄÅóÓÑÖ§³ÖÒ»ÏÂMySql£¬Ð»Ð»¡£

ҲϣÍû½ÌÓý²¿¡¢¿Æ¼¼²¿¸øÓèÖ±½ÓÖ§³Ö£¡


´ó¼ÒºÃ£º½ñÌì¿´µ½ÕâÔòÐÂÎÅ£¬Óë´ó¼Ò¹²Ïíһϣ¬MySQL´´Ê¼ÈËÏ£ÍûÖйúÉÌÎñ²¿ÄܽéÈëOracle&SunÊÕ¹º°¸£¬ºÃÏñ²¢Ã»ÓÐʵÖʽøÕ¹¡£¶ø¶íÂÞ˹Áª°î·´Â¢¶Ï»ú¹¹ÔÚÉÏÖÜÕ¹¿ªµ÷²é¡£Èç¹ûÐèÒªÉÌÎñ² ......

Memcache VS MySQL Query Cache.

¼ÇµÃǰÌìÓÐÈËÎÊÎÒ£¬ Memcache ºÍ MySQL ×Ô¼ºµÄ Query Cache ÓÐÉ¶Çø±ð? ÎÒÕâÑù»Ø´ðµÄ£¬Ç°ÕßÊÇɽկÖеÄÕ½¶·»ú£¬ºóÕßÊǹٷ½µÄÕ½¶·»ú¡£
ÐÂÊֻشðÎÊÌ⣬´íÁËι֡£¹þ¹þ¹þ¡£
ºÃÏñϸ½ÚÉϵIJî±ð»¹ÊÇÓеġ£
MemcacheÓŵãÈçÏ£º
  1. ÀíÂÛÉÏ¿ÉÒÔÖ§³ÅÎÞÏÞ²¢·¢ÒµÎñ²Ù×÷¡£
  2. ¿ÉÒÔÆôÓõ¥¶ÀµÄʵÀýÀ´»º´æ¾Þ¶àµÄÊý¾Ý¡££¨µ± ......

MySQLÓÅ»¯×ܽá


±íÉè¼Æ·½Ã棺
1¡¢×Ö¶ÎÃû¾¡Á¿¼ò»¯£¬²»Òª³¬¹ý18¸ö×Ö·û
2¡¢Ê¹Óþ¡Á¿Ð¡µÄÊý¾ÝÀàÐÍ£¬ÀýÈ磺MEDIUMINT±ÈINTÉÙÕ¼ÓÃ25%¿Õ¼ä
3¡¢×Ö¶ÎÀàÐÍÓ¦¾¡Á¿±ÜÃâÉèÖóɿɱ䳤¶È£¬È磺VARCHAR¡¢BLOB¡¢TEXT
4¡¢ÓÃÓڱȽϵIJ»Í¬×ֶΣ¬Ó¦ÉèÖÃÏàͬµÄÀàÐͼ°³¤¶È
5¡¢¾¡¿ÉÄܽ«×Ö¶ÎÉùÃ÷ΪNOT NULL£¬²¢Ö¸¶¨DEFAULT
6¡¢Ö÷Ë÷Òý¾¡¿ÉÄܶÌ
7¡¢½ö´´½¨ÕæÕý ......

mysqlÊý¾Ý¿âº¯Êý

²éѯÓï¾ä:
SELECT ×Ö¶ÎÃû from ±íÃû.
ÅÅÐò order by ÒªÅÅÐòµÄ×Ö¶ÎÃû desc :ÒÔµ¹Ðò²éѯ.
limit ´ÓµÚ¼¸¸ö¿ªÊ¼ ²éÕÒ¶àÉÙ¸ö :²éÕÒÖ¸¶¨¸öÊý.
ͬʱ²éѯ¶à¸ö×Ö¶ÎÓÃ","¸ô¿ª.
Èç²éѯ±íÀïÃæµÄËùÓÐÊý¾ÝÔÚ×Ö¶ÎÃû´¦Ìî"*".
ÈçÖ»ÏëÏÔʾij×ֶεÄǰ¼¸Î»×Ö·û¿ÉÒÔʹÓÃLEFTº¯Êý.
SELECT ×Ö¶ÎÃû,LEFT(×Ö¶ÎÃû,λÊý),×Ö¶ÎÃû from ±íÃû.
COU ......
© 2009 ej38.com All Rights Reserved. ¹ØÓÚE½¡ÍøÁªÏµÎÒÃÇ | Õ¾µãµØÍ¼ | ¸ÓICP±¸09004571ºÅ