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

mysql ³£Óú¯Êý

Ò»¡¢³£ÓÃ×Ö·û´®º¯Êý
1.CONCAT(str1,str2,...)
mysql> ? concat;
mysql> SELECT CONCAT('My', 'S', 'QL');
+-------------------------+
| CONCAT('My', 'S', 'QL') |
+-------------------------+
| MySQL                   |
+-------------------------+
2.INSERT(str,pos,len,newstr)
mysql> ? insert function;
mysql> SELECT INSERT('Quadratic', 3, 4, 'What');
+-----------------------------------+
| INSERT('Quadratic', 3, 4, 'What') |
+-----------------------------------+
| QuWhattic                         |
+-----------------------------------+
3.LOWER(str)
mysql> ? lower
mysql> SELECT LOWER('QUADRATICALLY');
+------------------------+
| LOWER('QUADRATICALLY') |
+------------------------+
| quadratically          |
+------------------------+
4.UPPER(str)
mysql> ? upper
mysql> SELECT UPPER('Hej');
+--------------+
| UPPER('Hej') |
+--------------+
| HEJ          |
+--------------+
5.LEFT(str,len)
mysql> ? left
mysql> SELECT LEFT('foobarbar', 5);
+----------------------+
| LEFT('foobarbar', 5) |
+----------------------+
| fooba                |
+----------------------+
6.RIGHT(str,len)
mysql> ? right
mysql> SELECT RIGHT('foobarbar', 4);
+-----------------------+
| RIGHT('foobarbar', 4) |
+-----------------------+
| rbar  &


Ïà¹ØÎĵµ£º

HibernateµÄÓ³ÉäÀàÐÍ hibernate mysqlÓ³ÉäÀàÐÍ

1¡¢HibernateµÄÓ³ÉäÀàÐÍ hibernate mysqlÓ³ÉäÀàÐÍ
Hibernate Ó³ÉäÀàÐÍ
Java ÀàÐÍ
±ê×¼ SQL ÀàÐÍ
´óСºÍȡֵ·¶Î§
integer »òÕß int
int »òÕß java.lang.Integer
INTEGER
4 ×Ö½Ú
long
long  Long
BIGINT
8 ×Ö½Ú
short
short  Short
SMALLINT
2 ×Ö½Ú
byte
byte  Byte
TINYINT
1 ×Ö½Ú
floa ......

Mysql³£ÓÃÃüÁîÐдóÈ«

µÚÒ»ÕС¢mysql·þÎñµÄÆô¶¯ºÍÍ£Ö¹
net stop mysql
net start mysql
µÚ¶þÕС¢µÇ½mysql
Óï·¨ÈçÏ£º mysql -uÓû§Ãû -pÓû§ÃÜÂë
¼üÈëÃüÁîmysql -uroot -p£¬ »Ø³µºóÌáʾÄãÊäÈëÃÜÂ룬ÊäÈë12345£¬È»ºó»Ø³µ¼´¿É½øÈëµ½mysqlÖÐÁË£¬mysqlµÄÌáʾ·ûÊÇ£º
mysql>
×¢Ò⣬Èç¹ûÊÇÁ¬½Óµ½ÁíÍâµÄ»úÆ÷ÉÏ£¬ÔòÐèÒª¼ÓÈëÒ»¸ö²ÎÊý-h»úÆ÷IP
µ ......

MySQL partition·ÖÇøI

Ò»¡¢        ·ÖÇøµÄ¸ÅÄî
¶þ¡¢        ÎªÊ²Ã´Ê¹Ó÷ÖÇø£¿£¨Óŵ㣩
Èý¡¢        ·ÖÇøÀàÐÍ
ËÄ¡¢        ×Ó·ÖÇø
Îå¡¢        ¶Ô·ÖÇø½øÐÐÐ޸ģ¨Ôö¼Ó¡¢É¾³ý¡¢·Ö½â¡¢ ......

oracleÏòmysqlÒÆÖ²

ÓÐһЩûÓÐʹÓÃÊý¾Ý¿âÖмä¼þµÄÈí¼þ¿ÉÄÜ»áÅöµ½ÔÚ²»Í¬µÄÓ¦Óó¡¾°ÐèÒªÓò»Í¬µÄÊý¾Ý¿â£¬ÕâÑù¿ÉÄܾÍÐèÒª½«Êý¾Ý¿â´úÂë×öÒÆÖ²£¬ÎÒÕâÀïÕûÀíÁËһЩ´Óoracleµ½mysqlµÄÒÆÖ²¹ý³ÌÖеÄ×¢ÒâÊÂÏ
1¡£sequenceÉú³É
¿ÉÒÔÓÃÀàËÆµÄ¶«Î÷À´×ö,ÈçÏ£º  
  create   table   myseq   ( &nb ......

Apache+php+mysqlÔÚwindowsϵݲװÓëÅäÖÃͼ½â

ÏÈ×¼±¸ºÃÈí¼þ£º
·Ö±ðÔÚApache¹Ù·½¡¢php¹Ù·½¡¢mysql¹Ù·½ÏÂÔØ×îлòÎȶ¨°æ±¾
Ò»¡¢°²×°Apache£¬ÅäÖóɹ¦Ò»¸öÆÕÍ¨ÍøÕ¾·þÎñÆ÷
ÔËÐÐÏÂÔØºÃµÄ“apache_2.0.55-win32-x86-no_ssl.msi”£¬³öÏÖÈçϽçÃæ£º
 
 
³öÏÖApache HTTP Server 2.0.55µÄ°²×°Ïòµ¼½çÃæ£¬µã“Next”¼ÌÐø
 
 
È·È ......
© 2009 ej38.com All Rights Reserved. ¹ØÓÚE½¡ÍøÁªÏµÎÒÃÇ | Õ¾µãµØÍ¼ | ¸ÓICP±¸09004571ºÅ