sqlÖ´ÐÐ˳Ðò
±ê×¼µÄ sql µÄ½âÎö˳ÐòΪ: (1).from ×Ó¾ä ×é×°À´×Ô²»Í¬Êý¾ÝÔ´µÄÊý¾Ý
(2).where ×Ó¾ä »ùÓÚÖ¸¶¨µÄÌõ¼þ¶Ô¼Ç¼½øÐÐɸѡ
(3).group by ×Ó¾ä ½«Êý¾Ý»®·ÖΪ¶à¸ö·Ö×é
(4).ʹÓþۺϺ¯Êý½øÐмÆËã
(5).ʹÓà having ×Ó¾äɸѡ·Ö×é
(6).¼ÆËãËùÓеıí´ïʽ
(7).ʹÓà order by ¶Ô½á¹û¼¯½øÐÐÅÅÐò
Ïà¹ØÎĵµ£º
insert into OPENROWSET('MICROSOFT.JET.OLEDB.4.0'
,'Excel 8.0;HDR=YES;DATABASE=c:\test.xls',sheet1$)
select * from ±íÃû
Èç¹ûÊÇÉú³Éexcel時ÓÃbcp
--µ¼³ö²éѯµÄÇé¿ö
EXEC master..xp_cmdshell 'bcp "SELECT au_fname, au_lname from pubs..authors ORDER BY au_lname" queryout "c:\test.xls" /c -/S"·þÎ ......
SQL²éѯÓï¾ä¾«»ªÊ¹ÓüòÒª
¡¡¡¡¼òµ¥µÄTransact-SQL²éѯֻ°üÀ¨Ñ¡ÔñÁÐ±í¡¢from×Ó¾äºÍWHERE×Ӿ䡣ËüÃÇ·Ö±ð˵Ã÷Ëù²éѯÁС¢²éѯµÄ±í»òÊÓͼ¡¢ÒÔ¼°ËÑË÷Ìõ¼þµÈ¡£
¡¡¡¡ÀýÈ磬ÏÂÃæµÄÓï¾ä²éѯtesttable±íÖÐÐÕÃûΪ“ÕÅÈý”µÄnickname×ֶκÍemail×ֶΡ£
¡¡¡¡SELECT nickname,email
¡¡¡¡[1] from testtable
¡¡¡¡WHERE nam ......
inner join(µÈÖµÁ¬½Ó) Ö»·µ»ØÁ½¸ö±íÖÐÁª½á×Ö¶ÎÏàµÈµÄÐÐ
left join(×óÁª½Ó) ·µ»Ø°üÀ¨×ó±íÖеÄËùÓмǼºÍÓÒ±íÖÐÁª½á×Ö¶ÎÏàµÈµÄ¼Ç¼
right join(ÓÒÁª½Ó) ·µ»Ø°üÀ¨ÓÒ±íÖеÄËùÓмǼºÍ×ó±íÖÐÁª½á×Ö¶ÎÏàµÈµÄ¼Ç¼
INNER JOIN Óï·¨£º
INNER JOIN Á¬½ÓÁ½¸öÊý¾Ý±íµÄÓ÷¨£º
SELECT * from ±í1 INNER JOIN ±í2 ON ±í1.×ֶκÅ=±í2 ......
ÔÚÍøÂçÉÏ·¢ËÍÊý¾Ý¶¼»á·¢ÉúһЩÑÏÖØµÄ°²È«ÎÊÌâ£¬ÍøÂç×î´óµÄµ£ÓÇÔÚÓÚÓÐÈË¿ÉÒÔ²¶»ñÊý¾Ý£¬sqlserverÖ§³Ö²ÉÓÃÖ¤ÊéÀ´¼ÓÃÜ
1£®´´½¨Ö¤Êé
create master key encryption by
password = 'administrator123'
--ÓÃÃÜÂëadmini--
create certificate c1
encryption by password = 'administrator123'
with subject = 'c1 certific ......
¹¦ÄÜ£ºÐ¡Ð´½ð¶îת»»³É´óд
²ÎÊý£º@LowerMoney Сд½ð¶î ¼ÓÉÏСÊýµã×¿ÉÒÔ±£Áô38λ
Êä³ö£º´óд½ð¶î
¼ò½é£ºSQL°æ Сд½ð¶îת»»³É´óд½ð¶î£¨×î¶à¿ÉÒÔ¾«È·µ½Ð¡ÊýµãËÄ룩
×¢£º Decimal Êý¾ÝÀàÐÍ×î¶à¿É´æ´¢ 38 ¸öÊý×Ö
×ªÔØ£ºÇë±£ÁôÒÔÉÏÐÅÏ¢,лл£¡£¡£¡
********************************* ......