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diff of mysql

page id: 1356, 8063 hits, unlocked, unhidden, current: v22
v21:2011-10-07 16:26:32(4,388), v22:2011-10-07 16:26:55(4,329)
diff v21:210.98.181.115 v22:210.98.181.115

=
= !! php
= * __mysql_num_rows()__ = Äõ¸®ÀÇ °¹¼ö
= * __mysql_insert_id()__ = Äõ¸®ÀÇ ¾ÆÀ̵ð
=
= !! varcharÇü ¼ýÀÚ Á¤·Ä
= * order by CAST(Çʵå¸í AS UNSIGNED) varchar ¼ýÀÚ Á¤·Ä½Ã
=
= !! mysql
= * __set names euckr__ = mysql Äɸ¯ÅͼÂÀ» Çѱ۷Î
= * __truncate__ table = Å׺ñºí ÃʱâÈ­
=
= !! Å×ÀÌºí º¹»ç
= * insert into ab2 select * from ab
= * select * into ab2 from ab
=
= !! mysql ¿ÜºÎ Á¢¼Ó½Ã ÁÖ¼®Ã³¸®
= {{{
= #bind-address=127.0.0.1
= }}}
=
- !!! mysql ¿ÜºÎ Á¢¼Ó½Ã ÁÖ¼®Ã³¸®
- #bind-address=127.0.0.1
-
-
-
= !! mysql replace ¿¹Á¦
= {{{
= update <table> set content=replace(content,"<br />", "");
= }}}
=
= !! mysql primary key »èÁ¦½Ã
= {{{
= alter table Å×À̺í¸í drop primary key
= }}}
=
= !! Äɸ¯ÅÍ ¼Â º¯°æ½Ã
= {{{
= alter table [Å×À̺í¸í] convert to character set [Äɸ¯ÅͼÂ] collate [ÄÝ·º¼ÇÀ̸§];
= convert to character set utf8 collate utf8_general_ci;
=
= ALTER DATABASE db_name DEFAULT CHARACTER SET charset;
= ALTER TABLE table_name DEFAULT CHARACTER SET charset
=
= }}}
=
= !! Å×ÀÌºí ¸¸µé¶§.
= {{{
= 5.0 ÀÌ»óÀÏ ¶§.. µ¥ÀÌŸ º£À̽º
=
= CREATE DATABASE DB¸í DEFAULT CHARACTER SET euckr COLLATE euckr_korean_ci;
= CREATE DATABASE DB¸í DEFAULT CHARACTER SET utf8 COLLATE utf8_general_ci;
= }}}
=
= !! MySQL5.x ¿¡¼­ MySQL4.x ¿¡ Áý¾î ³ÖÀ» ´ýÇÁ¸¦ ¹ÞÀ»½Ã
= {{{
= mysqldump -u »ç¿ëÀÚ -p --default--character-set=euckr --compatible=mysql40 µðºñ¸í > ÆÄÀϸí.sql
= }}}
=
=
=
= !! Å×ÀÌºí º¹±¸
= {{{
= mysql> analyze table table_name;
= +--------------------------+---------+----------+-----------------------------+
= | Table | Op | Msg_type | Msg_text |
= +--------------------------+---------+----------+-----------------------------+
= | xxxxxxxxxx_db.table_name | analyze | status | Table is already up to date |
= +--------------------------+---------+----------+-----------------------------+
=
= mysql> repair table table_name;
= +--------------------------+--------+----------+-----------------------------+
= | Table | Op | Msg_type | Msg_text |
= +--------------------------+--------+----------+-----------------------------+
= | xxxxxxxxxx_db.table_name | repair | status | Table is already up to date |
= +--------------------------+--------+----------+-----------------------------+
=
= Å×ÀÌºí¿¡ ´ëÇÑ º¸°í¼­¿Í º¹±¸¸¦ ½ÃµµÇصµ ¾ÈµÉ°æ¿ì...
=
= # myisamchk -r table_name
= - recovering (with sort) MyISAM-table '/home/mysql/xxxxxxxxxx/table_name'
= Data records: 1650
= - Fixing index 1
= Key 1 - Found wrong stored record at 822660
= - Fixing index 2
= - Fixing index 3
= - Fixing index 4
= Data records: 1637
=
= ¸í·É¾î¸¦ ÅëÇؼ­ ¼öÁ¤ÇÒ ¼ö ÀÖÀ½.. %%%
= ^^ ¬ž¿À~
=
= }}}
=
= !! ³¯ÀÚÇÔ¼ö
= {{{
= mysql> SELECT DATE_ADD('1998-01-02', INTERVAL 31 DAY);
= -> '1998-02-02'
= mysql> SELECT ADDDATE('1998-01-02', INTERVAL 31 DAY);
= -> '1998-02-02'
=
= mysql> SELECT ADDDATE('1998-01-02', 31);
= -> '1998-02-02'
=
= ADDTIME(expr1,expr2)
= ADDTIME() adds expr2 to expr1 and returns the result. expr1 is a time or datetime expression, and expr2 is a time expression.
=
= mysql> SELECT ADDTIME('1997-12-31 23:59:59.999999',
= -> '1 1:1:1.000002');
= -> '1998-01-02 01:01:01.000001'
= mysql> SELECT ADDTIME('01:00:00.999999', '02:00:00.999998');
= -> '03:00:01.999997'
=
= }}}
=
= !! µðºñ Àüü ¹é¾÷
= {{{
= mysqldump --all-databases > sample.sql
= }}}
=
=
= !! ·£´ýÇÏ°Ô »Ì´Â Äõ¸®
= {{{
=
= ÀÏ´Ü ±×³É »óÀ§ 5°³¸¸ »Ì´Â °Í
=
= MS-SQL¿¡¼­´Â
= SELECT TOP 5 * FROM tTag
=
= mysql¿¡¼­´Â
= SELECT * FROM tTag Limit 5
=
= -------------------------------------------
=
= RandomÇÏ°Ô »óÀ§ 5°³¸¦ »Ì´Â °Í
=
= MS-SQL¿¡¼­´Â
= SELECT TOP 5 * FROM tTag ORDER BY NEWID()
=
= mysql¿¡¼­´Â
= SELECT * FROM tTag ORDER BY RAND() Limit 5
=
= }}}
=
= latin1 -> euckr
= {{{
= 1. ¹é¾÷Çϱâ
= mysqldump -u{username} -p{password} {dbname} --default-character-set latin1 > {dump}.sql
= ¿©±â¼­ Á¦ÀÏ Áß¿äÇÑ °ÍÀÌ --default-character-set latin1 ÀÔ´Ï´Ù.
= ÀÌ°ÍÀÌ ¾øÀ¸¸é ¿ÂÀüÇÏ°Ô ¹é¾÷ÀÌ µÇÁö ¾ÊÀ¸´Ï ¿©·¯°¡Áö·Î ¾î·Æ½À´Ï´Ù.
=
= 2. ¹®Àڼ º¯È¯Çϱâ
= (¹®Á¦°¡ µÇ´Â °ÍÀÌ º¸Åë ÀÌ °úÁ¤¿¡¼­ ¸Þ¸ðÀåÀ̳ª ¿¡µñÅ͸¦ ÀÌ¿ëÇÏ°Ô µÇ¸é ±úÁ®¼­ º¹¿øÀ» ÇÒ¶§ ¿¡·¯°¡ ¹ß»ýÇÕ´Ï´Ù.)
= utf8·Î º¯È¯ ÇÒ¶§
= iconv -c -f cp949 -t utf-8 ¿øº»ÆÄÀϸí > º¯È¯µÉ ÆÄÀϸí.sql
= euckr À̶ó¸é º¯È¯ ÇÒ¶§
= iconv -c -f cp949 -t euckr ¿øº»ÆÄÀϸí > º¯È¯µÉ ÆÄÀϸí.sql
= }}}
=
= * http://blog.naver.com/seuis398?Redirect=Log&logNo=70066657549
=
= !! Á¶°Ç½ÄÀ» Á־ sum °ªÀ» °¡Á®¿À´Â ¹æ½Ä
= {{{
= SUM(B.CLASS_PAY) AS CLASS_PAY,
=
=
= SUM(
= CASE B.GRADE
= WHEN '11' THEN B.CLASS_PAY
= END
= )AS CLASS_PAY2,
= }}}
=

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