ÔÚsql serverÖйØÓÚÓαêcursorµÄʹÓÃ
--´Ë´¦Ê¹ÓÃpubs¿â
declare @myname varchar(50)
declare @fname varchar(20)
declare @lname varchar(20)
declare my_cursor cursor for
select fname,lname from employee order by emp_id
open my_cursor
fetch next from my_cursor into @fname,@lname
while @@fetch_status=0
begin
set @myname=@fname+@lname
fetch next from my_cursor into @fname,@lname
end
close my_cursor
deallocate my_cursor
Ïà¹ØÎĵµ£º
1.Ñ¡Ôñ×îÓÐЧÂʵıíÃû˳Ðò(Ö»ÔÚ»ùÓÚ¹æÔòµÄÓÅ»¯Æ÷ÖÐÓÐЧ)¡¡¡¡
¡¡¡¡ SQLSERVERµÄ½âÎöÆ÷°´ÕÕ´ÓÓÒµ½×óµÄ˳Ðò´¦Àífrom×Ó¾äÖеıíÃû£¬Òò´Ëfrom×Ó¾äÖÐдÔÚ×îºóµÄ±í£¨»ù´¡±ídriving table£©½«±»×îÏÈ´¦Àí£¬ÔÚfrom×Ó¾äÖаüº¬¶à¸ö±íµÄÇé¿öÏ£¬±ØÐëÑ¡Ôñ¼Ç¼ÌõÊý×îÉٵıí×÷Ϊ»ù´¡±í£¬µ±SQLSERVER´¦Àí¶à¸ö±íʱ£¬»áÔËÓÃÅÅÐò¼°ºÏ²¢µÄ·½Ê½Á ......
Èç¹ûÄã¾³£Óöµ½ÏÂÃæµÄÎÊÌ⣬Äã¾ÍÒª¿¼ÂÇʹÓÃSQL ServerµÄÄ£°åÀ´Ð´¹æ·¶µÄSQLÓï¾äÁË£º
SQL³õѧÕß¡£
¾³£Íü¼Ç³£ÓõÄDML»òÊÇDDL SQL Óï¾ä¡£
ÔÚ¶àÈË¿ª·¢Î¬»¤µÄSQLÖУ¬Ã¿¸öÈ˶¼ÓÐ×Ô¼ºµÄSQLϰ¹ß£¬Ã»ÓÐÒ»Ì×ͳһµÄ¹æ·¶¡£
ÔÚSQL Server Management StudioÖУ¬ÒѾ¸ø´ó¼ÒÌṩÁ˺ܶೣÓõÄÏÖ³ÉSQL¹æ·¶Ä£°å¡£
SQL Server Management ......
ÕâÁ½Ì춼ûÓкúÃѧϰ£¬½ñÌìÖÕÓÚËãͶÈëÁËЩ£¬ÓÉÓڿγ̵ĹØÏµ£¬ÎÒµÄsqlÒ²ÊÇͬvbÒ»ÆðѧϰµÄ¡£ËäȻ֪µÀ̰¶à½À²»À㬿ÉÊǰ´ÕÕʵ¼ÊÇé¿ö£¬ÎÒÍêȫûÓÐÀíÓÉÅׯúsqlµÄ¡£
×î½ü¶¼°Ñʱ¼äͶÈëµ½vbºÍÃæÏò¶ÔÏóÖУ¬sql½ñÌìºÃºÃ¸´Ï°ÁËÏ£¬´Ócreate database ¿ªÊ¼£¬create table£¬alter table £¬ add constraint …&h ......
ÒÔÏÂΪ±¾ÈËÕ⼸ÌìÖØÐÂѧϰSQLSERVER2000µÄѧϰ±Ê¼Ç£¬Ä¿µÄÊÇÖØÐÂÈÏʶ¼°¹®¹Ì֪ʶµã£º
Ò»¡¢¼òµ¥µÄSELECTÓï¾äµÄÓï·¨ÈçÏ£º
SELECT |ALL|DISTINCT| <Ä¿±ê±í´ïʽ>|,<Ä¿±ê±í´ïʽ>|...
from<±í»òÊÓͼÃû>|,<±í»òÊÓͼÃû>|
[WHERE<Ìõ¼þ±í´ïʽ>]
[GROUP BY <ÁÐÃû1>|HAVING<Ìõ¼þ±í´ïʽ>| ......