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

¾¡Á¿±ÜÃâÔÚSQLÓï¾äÖÐʹÓÃOR

----start
    ÔÚSQLÓï¾äÖÐÓ¦¸Ã¾¡Á¿±ÜÃâʹÓÃOR£¬ÒòΪÕâÑù×ö»áÓ°ÏìSQLÓï¾äµÄÐÔÄÜ¡£¿¼ÂÇÏÂÃæµÄÇé¿ö£º
CREATE TABLE USER
(
NAME VARCHAR(20) NOT NULL,---ÐÕÃû
BIRTHDAY DATE---ÉúÈÕ
); 
ÏÖÔÚÓÐÕâÑùÒ»¸öÎÊÌ⣺ÈÃÄã²éÕÒÒ»ÏÂÉúÈÕÊÇ1949-10-1£¨¹²ºÍ¹úͬÁäÈË£©»ò1978-12-18£¨Ê®Ò»½ìÈýÖÐÈ«»áÕÙ¿ªÊ±¼ä£©µÄÈË£¬Ôõô°ì£¿
ÎÒÃǺÜ×ÔÈ»¾Í»á°ÑÕâ¾ä»°·­Òë³ÉÈçÏÂSQLÓï¾ä£º
SELECT * from USER WHERE BIRTHDAY='1949-10-1' OR BIRTHDAY='1978-12-18' 
ÕâÑù×öÍêÈ«ÕýÈ·£¬¿ÉÊÇÐÔÄܲ»ºÃ£¬ÄãµÄ˼Ïë±»Õâ¸öÎÊÌâÊø¸¿ÁË£¬ÎÒÃÇ»¹¿ÉÒÔÕâôд£º
SELECT * from USER WHERE BIRTHDAY IN ('1949-10-1','1978-12-18'); 
ÓÐʱºò£¬ÎÒÃDz»Òª°Ñ×Ô¼ºÊø¸¿ÔÚÎÊÌâÀïÃæ¡£
---¸ü¶à²Î¼û£ºDB2 SQL ¾«Òª
----ÉùÃ÷£º×ªÔØÇë×¢Ã÷³ö´¦¡£
----last update at 2009.9.24
----write by wave at 2009.9.24
----end


Ïà¹ØÎĵµ£º

SQLÖÐûÓü¯ºÏµÄminus,ÓÃunionʵÏÖ

ÁгöTableAÖÐÓеĶøTableBÖÐûÓÐ, ÒÔ¼°BÖÐÓжøAÖÐûÓеļǼ£º
ÆäÖÐÁ½¸ö±íµÄ½á¹¹Ïàͬ£¬Ñ¡ÔñµÄKey¿ÉÒÔ¶à¸ö
Select Key from
( select * from TableA
Union select * from TableB
)
group by Key
having count(Key)=1

ÁгöTableAÖÐÓеĶøTableBÖÐûÓеļǼ£º
Select Key from
( (select * from TableA
Un ......

ÐÞ¸Äsql server µÄÁ¬½ÓÊý

 ÈçºÎÐÞ¸ÄSQL ServerµÄÁ¬½ÓÊý
ÎÒ°ÑSQL   Server   7.0µÄÓû§Á¬½ÓÊýÉèΪ1ºó£¬Êý¾Ý¿â¾ÍÔÙÒ²Á¬²»ÉÏÁË£¬ËùÒÔҲû°ì·¨ÐÞ¸ÄÁ¬½ÓÊý  
  ÇëÎÊÓÐʲô°ì·¨ÄÜÐÞ¸ÄÁ¬½ÓÊý£¿
ÔÚserver   µÄÊôÐÔÀïÃæÓиöconnetctions     µÄ  
   
  maximun     concurr ......

sqlÓï¾ä»ù±¾²Ù×÷

1.½¨±íÓï¾ä£ºcreate table
Ó÷¨: create table ±íµÄÃû×Ö (×Ö¶Î1, ×Ö¶Î2,¡£¡£¡£¡£)
¾ÙÀý£ºÀýÈç´´½¨Ò»¸öѧÉú³É¼¨±í£¬°üº¬µÄ×Ö¶ÎÓУ¬Ñ§Éúid£¬ÐÕÃû£¬ÐԱ𣬰༶£¬³É¼¨create table score(
create table score(
 sid nvarchar(10) primary key,
 sname nvarchar(10) not null,
 sex nvarchar(2),
 sc ......

mysqlµ¼ÈësqlÎļþ:Mysqlµ¼Èëµ¼³ö.sqlÎļþ

mysqlµ¼ÈësqlÎļþ:Mysqlµ¼Èëµ¼³ö.sqlÎļþ
²½ÖèÈçÏ£º
Ò».MYSQLµÄÃüÁîÐÐģʽµÄÉèÖãº
×ÀÃæ->ÎҵĵçÄÔ->ÊôÐÔ->»·¾³±äÁ¿->н¨->
PATH=“£»path\mysql\bin;”ÆäÖÐpathΪMYSQLµÄ°²×°Â·¾¶¡£
¶þ.¼òµ¥µÄ½éÉÜÒ»ÏÂÃüÁîÐнøÈëMYSQLµÄ·½·¨£º
1.C:\>mysql -h hostname -u username -p
°´ENTER ......

SQLÓïÑԵIJ¼¾ÖºÍIllegalArgumentException

ºÍjava.lang.IllegalArgumentException: org.hibernate.QueryException: JPA-style positional param was not an integral ordinalÕ½¶·Á˰ëÌ죬º¹°¡£¡
ʹÓÃjpa + strut+ hibernate ¾Í±¨org.hibernate.QueryException: JPA-style positional param was not an integral ordinal
Ò»°ã°ÑhqlÓï¾äдÔÚÒ»ÐУ¬»áºÜ³¤£¬ÔÚideÖÐÐèÒ ......
© 2009 ej38.com All Rights Reserved. ¹ØÓÚE½¡ÍøÁªÏµÎÒÃÇ | Õ¾µãµØÍ¼ | ¸ÓICP±¸09004571ºÅ