Mysql±àÒë°²×°²ÎÊýÓÅ»¯
1. -static 13%
--with-client-ldflags=-all-static
--with-mysqld-ldflags=-all-static
¾²Ì¬Á´½ÓÌá¸ß13%ÐÔÄÜ
2. -pgcc 1%
CFLAGS="-O3 -mpentiumpro -mstack-align-double" CXX=gcc \
CXXFLAGS="-O3 -mpentiumpro -mstack-align-double \
-felide-constructors -fno-exceptions -fno-rtti"
Èç¹ûÊÇInter´¦ÀíÆ÷£¬Ê¹ÓÃpgccÌá¸ß1%ÐÔÄÜ
3. Unix Socket 7.5%
--with-unix-socket-path=/usr/local/mysql/tmp/mysql.sock
ʹÓÃunixÌ×½Ó×ÖÁ´½ÓÌá¸ß7.5%ÐÔÄÜ£¬ËùÒÔÔÚwindowsÏÂmysqlÐÔÄܿ϶¨²»ÈçunixÏÂÃæ
4. --enable-assembler
ÔÊÐíʹÓûã±àģʽ(ÓÅ»¯ÐÔÄÜ)
ÏÂÃæÊÇ×ÜÌåµÄ±àÒëÎļþ
±àÒë´úÂë
CFLAGS="-O3" CXX=gcc CXXFLAGS="-O3 -felide-constructors \
-fno-exceptions -fno-rtti -fomit-frame-pointer -ffixed-ebp"
./configure \
--prefix=/usr/local/mysql --enable-assembler \
--with-mysqld-ldflags=-all-static
--with-client-ldflags=-all-static
--with-unix-socket-path=/usr/local/mysql/tmp/mysql.sock
--with-charset=utf8
--with-collation=utf8_general_ci
--with-extra-charsets=all
Ïà¹ØÎĵµ£º
È¡mysql±íºÍ×Ö¶Î×¢Ê͵ÄÓï¾ä
1¡¢È¡×Ö¶Î×¢ÊÍ
Select COLUMN_NAME ÁÐÃû, DATA_TYPE ×Ö¶ÎÀàÐÍ, COLUMN_COMMENT ×Ö¶Î×¢ÊÍ
from INFORMATION_SCHEMA.COLUMNS
Where table_name = 'companies'##±íÃû
AND table_schema = 'testhuicard'##Êý¾Ý¿âÃû
AND column_name LIKE 'c_name'##×Ö¶ÎÃû
2¡¢È¡µÃ±í×¢ÊÍ
Select tab ......
select id from message where author_id in (select followed_id from Relation where follower_id=1) order by id desc ºÍ ·Ö±ðÖ´ÐÐ $userlist = select followed_id from Relation where follower_id=1 ÔÙ select id from message where author_id in ($userlist) order by id desc ¾¹È»ÓÐÁ½¸öÊýÁ ......
Mysql Öж¨Òå×ֶκóµÄÊý¾ÝµÄÓô¦£º
int(1)ºÍint(10)ËÆºõûÓÐʲô²î±ð£¬¶¼±íʾ×î´óËĸö×Ö½ÚµÄÕûÐÍÊý¾Ý¡£
ÀýÈ綨ÒåÒ»¸öÃû×ÖΪtestµÄ±í:
DROP TABLE IF EXISTS `test`;
CREATE TABLE `test` (
`id` int(1) NOT NULL,
`ids` int(10) default NULL,
`c` char(1) default NULL,
`cs` ......
ÓÐʱºònginx£¬apache£¬mysql£¬php±àÒëÍêÁËÏë¿´¿´±àÒë²ÎÊý¿ÉÒÔÓÃÒÔÏ·½·¨
nginx±àÒë²ÎÊý£º
#/usr/local/nginx/sbin/nginx -V
CODE:
nginx version: nginx/0.6.32
built by gcc 4.1.2 20071124 (Red Hat 4.1.2-42)
configure arguments: --user=www --group=www --prefix=/usr/local/nginx/ --with-http_stub_status_mo ......
MySQL 5.1 ÖУ¬ÔÚ¸´ÖÆ·½ÃæµÄ¸Ä½ø¾ÍÊÇÒý½øÁËеĸ´ÖƼ¼Êõ£º»ùÓÚÐеĸ´ÖÆ¡£
MYSQL¸´ÖƵļ¸ÖÖģʽ
MySQL 5.1 ÖУ¬ÔÚ¸´ÖÆ·½ÃæµÄ¸Ä½ø¾ÍÊÇÒý½øÁËеĸ´ÖƼ¼Êõ£º»ùÓÚÐеĸ´ÖÆ¡£
¼òÑÔÖ®£¬ÕâÖÖм¼Êõ¾ÍÊǹØ×¢±íÖз¢Éú±ä»¯µÄ¼Ç¼£¬¶ø·ÇÒÔǰµÄÕÕ³ binlog ģʽ¡£
´Ó MySQL 5.1.12 ¿ªÊ¼£¬¿ÉÒÔÓÃÒÔÏÂÈýÖÖģʽÀ´ÊµÏÖ£º
-- »ùÓÚ ......