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mysqlÖÐINSTRº¯ÊýµÄÓ÷¨
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
½«instr½á¹û×÷ΪһÁУ¬°´ÆäÅÅÐò
select id,1 from world_guide where id = 32
union
select * from
(select id, instr('30,35,31,',id+',') as d from
world_blog where id in (30,35,31) order by d) as t;
Êä³ö
+----+---+
| id | 1 |
+----+---+
| 32 | 1 |
| 30 | 1 |
| 35 | 4 |
| 31 | 7 |
+----+---+
4 rows in set, 6 warnings (0.02 sec)
±íA
×Ö¶Î:ÐÕÃû name
ÕÅÈý
ÍõÎå
±íB
×Ö¶Î:±êÌâ title
ÐÅÏ¢Ò» ÕÅÈý·¢²¼
ÐÅÏ¢¶þ ÍõÎå·¢²¼
ÐÅÏ¢Èý ÕÅÈý·¢²¼
ÅÅÐаñ£¬°´±íAµÄÐÕÃû like %‘name’% Æ¥Åä ±íBµÄ title µÄÌõÊý½øÐÐÅÅÐò,
ÅÅÐаñÑùÀý
ÕÅÈý 2
ÍõÎå 1
select ÐÕÃû,count(b.title) from a inner join b on instr(b.title,a.ÐÕÃû)>0
group by ÐÕÃû
order by count(b.title)
select name,(select count(*) from ±íB where instr(title,±íA.name)
from ±íA
order by 2 desc
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rpm·½Ê½
rpm -ivf MySQL*
tar·½Ê½
tar xzvf mysql-x.xx.tar.gz
cd mysqlp-x.xx Éú³Émakefile
./congigure
make ±àÒë
make install
mysql_install_db
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select (sum(data_length) + sum(index_length))/(1024*1024) from INFORMATION_SCHEMA.`TABLES` where table_schema = 'your_table_schema' and table_name like 'your_table_name';
£¨2£©show table status like '';
try {
Class.forName("com.mysql.jdbc.Driver");
......
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USE dxdb;
DELIMITER //
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DROP PROCEDURE IF EXISTS get_sid;
CREATE PROCEDURE get_sid(para_domain VARCHAR(20), out para_sid BIGINT UNSIGNED)
BEGIN
START TRANSACTION;
UPDATE t_sid SET sID=sID+1 WHERE cDomain=para_domain;
SELECT sID INTO para_sid from t_sid WHERE cDomain=para_domain;
......