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sql 2005±íµÄ¸´ÖÆÓÐÁ½ÖÖ£ºÒ»ÖÖ¾ÍÊǰÑÕû¸ö±í¸´ÖƹýÈ¥£¬¾ÍºÃÏñ¸´ÖÆÎļþ²¢ÇÒÖØÃüÃû¡£±ðÍâÒ»ÖÖ¾ÍÊǰѱíµÄÄÚÈݸ´Öƹý³ö.
select * into newtable form oldtable;°Ñoldtabel¸´ÖƵ½newtableÇÒnewtable²»´æÔÚ,·ñÔò³ö´í.;
insert into newtable select * from oldtable°ÑoldtableµÄÄÚÈݲåÈëµ½newtable, newtableÒ»¶¨Òª´æÔÚ,²Å¿ÉÒÔ¸´ÖÆ.
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create table tb(id varchar(3) , pid varchar(3) , name varchar(10))
insert into tb values('001' , null , '¹ã¶«Ê¡')
insert into tb values('002' , '001' , '¹ãÖÝÊÐ')
insert i ......
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1£® ÄÚÁª½Ó¡£
2£® ÍâÁª½Ó¡£
3£® ½»²æÁª½Ó¡£
ÄÇôÎÒÃÇÒ»ÆðÀ´¿´Ò»ÏÂÈçºÎʹÓö ......
ÕÒ³öTABLE1ÖÐ
Column1 Âú×ãvalue1
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Column2 Âú×ãvalue2
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Column3 Âú×ãvalue3
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SELECT top 10 * from TABLE1
WHERE
CASE WHEN COLUMN1='value1' THEN 1
ELSE
(CASE WHEN COLUMN2='value2' THEN 1
ELSE
(CASE WHEN COLUMN3=value3 THEN 1 ELSE 0 END)
END)
END =1 ......
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T_Student ±í
Stud_ID
Name
1
Tom
2
Jack
T_Course ±í
Course_ID
Course
1
Chinese
2
English
T_Stud_Course ±í
ID
Stud_ID
Course_ID
1
1
1
2
1
2
3
2
2
ÏÖÔÚÎÒÃÇ¿ÉÒÔÏÂÃæµÄ´æ´¢¹ý³ÌÀ ......