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

SQL Óï¾äÁ·Ï°


–1¡¢²éÕÒÔ±¹¤µÄ±àºÅ¡¢ÐÕÃû¡¢²¿ÃźͳöÉúÈÕÆÚ£¬Èç¹û³öÉúÈÕÆÚΪ¿ÕÖµ£¬ÏÔʾÈÕÆÚ²»Ïê,²¢°´²¿ÃÅÅÅÐòÊä³ö,ÈÕÆÚ¸ñʽΪyyyy-mm-dd¡£
select emp_no,emp_name,dept,isnull(convert(char(10),birthday,120),’ÈÕÆÚ²»Ïê’) birthday
from employee
order by dept
–2¡¢²éÕÒÓëÓ÷×ÔÇ¿ÔÚͬһ¸öµ¥Î»µÄÔ±¹¤ÐÕÃû¡¢ÐԱ𡢲¿ÃźÍÖ°³Æ
select emp_no,emp_name,dept,title
from employee
where emp_name<>’Ó÷×ÔÇ¿’ and dept in
(select dept from employee
where emp_name=’Ó÷×ÔÇ¿’)
–3¡¢°´²¿ÃŽøÐлã×Ü£¬Í³¼ÆÃ¿¸ö²¿ÃŵÄ×ܹ¤×Ê
select dept,sum(salary)
from employee
group by dept
–4¡¢²éÕÒÉÌÆ·Ãû³ÆÎª14´çÏÔʾÆ÷ÉÌÆ·µÄÏúÊÛÇé¿ö£¬ÏÔʾ¸ÃÉÌÆ·µÄ±àºÅ¡¢ÏúÊÛÊýÁ¿¡¢µ¥¼ÛºÍ½ð¶î
select a.prod_id,qty,unit_price,unit_price*qty totprice
from sale_item a,product b
where a.prod_id=b.prod_id and prod_name=’14´çÏÔʾÆ÷’
–5¡¢ÔÚÏúÊÛÃ÷ϸ±íÖа´²úÆ·±àºÅ½øÐлã×Ü£¬Í³¼ÆÃ¿ÖÖ²úÆ·µÄÏúÊÛÊýÁ¿ºÍ½ð¶î
select prod_id,sum(qty) totqty,sum(qty*unit_price) totprice
from sale_item
group by prod_id
–6¡¢Ê¹ÓÃconvertº¯Êý°´¿Í»§±àºÅͳ¼ÆÃ¿¸ö¿Í»§1996ÄêµÄ¶©µ¥×ܽð¶î
select cust_id,sum(tot_amt) totprice
from sales
where convert(char(4),order_date,120)=’1996′
group by cust_id
–7¡¢²éÕÒÓÐÏúÊۼǼµÄ¿Í»§±àºÅ¡¢Ãû³ÆºÍ¶©µ¥×ܶî
select a.cust_id,cust_name,sum(tot_amt) totprice
from customer a,sales b
where a.cust_id=b.cust_id
group by a.cust_id,cust_name
–8¡¢²éÕÒÔÚ1997ÄêÖÐÓÐÏúÊۼǼµÄ¿Í»§±àºÅ¡¢Ãû³ÆºÍ¶©µ¥×ܶî
select a.cust_id,cust_name,sum(tot_amt) totprice
from customer a,sales b
where a.cust_id=b.cust_id and convert(char(4),order_date,120)=’1997′
group by a.cust_id,cust_name
–9¡¢²éÕÒÒ»´ÎÏúÊÛ×î´óµÄÏúÊۼǼ
select order_no,cust_id,sale_id,tot_amt
from sales
where tot_amt=
(select max(tot_amt)
from sales)
–10¡¢²éÕÒÖÁÉÙÓÐ3´ÎÏúÊÛµÄÒµÎñÔ±Ãûµ¥ºÍÏúÊÛÈÕÆÚ
select emp_name,order_date
from employee a,sales b
where emp_no=sale_id and a.emp_no in
(select sale_id
from sales
group by sale_id
having count(*)>=3)
order by emp_na


Ïà¹ØÎĵµ£º

Oracle Sql ÓÅ»¯


»ù±¾µÄSql±àдעÒâÊÂÏî
¾¡Á¿ÉÙÓÃIN²Ù×÷·û£¬»ù±¾ÉÏËùÓеÄIN²Ù×÷·û¶¼¿ÉÒÔÓÃEXISTS´úÌæ¡£
²»ÓÃNOT IN²Ù×÷·û£¬¿ÉÒÔÓÃNOT EXISTS»òÕßÍâÁ¬½Ó+Ìæ´ú¡£
OracleÔÚÖ´ÐÐIN×Ó²éѯʱ£¬Ê×ÏÈÖ´ÐÐ×Ó²éѯ£¬½«²éѯ½á¹û·ÅÈëÁÙʱ±íÔÙÖ´ÐÐÖ÷²éѯ¡£¶øEXISTÔòÊÇÊ×Ïȼì²éÖ÷²éѯ£¬È»ºóÔËÐÐ×Ó²éѯֱµ½ÕÒµ½
µÚÒ»¸öÆ¥ÅäÏî¡£NOT EXISTS±ÈNOT INЧÂÊÉ ......

SQL Server 2008¼¸ÏîÐÂÌØÐÔ¸ÅÊö

¼Æ»®ÓÚ2008ÄêµÚÒ»¼¾¶È·¢²¼µÄSQL Server 2008²»½ö¶ÔÔ­ÓÐÐÔÄܽøÐÐÁ˸Ľø£¬»¹Ìí¼ÓÁËÐí¶àÐÂÌØÐÔ£¬±ÈÈçÐÂÌíÁËÊý¾Ý¼¯³É¹¦ÄÜ£¬¸Ä½øÁË·ÖÎö·þÎñ£¬±¨¸æ·þÎñ£¬ÒÔ¼°Office¼¯³ÉµÈµÈ¡£
¡¡¡¡SQL Server¼¯³É·þÎñ
¡¡¡¡SSIS(SQL Server¼¯³É·þÎñ)ÊÇÒ»¸öǶÈëʽӦÓóÌÐò£¬ÓÃÓÚ¿ª·¢ºÍÖ´ÐÐETL(½âѹËõ¡¢×ª»»ºÍ¼ÓÔØ)°ü¡£SSIS´úÌæÁËSQL 2000µÄDTS¡£Õ ......

Windows Azureƽ̨¼ò½é(ËÄ)£ºSQL AzureÒÔ¼°ÆäËû·þÎñ


¹«¸æ£º±¾²©¿ÍΪ΢ÈíÔÆ¼ÆËãÖÐÎIJ©¿ÍµÄ¾µÏñ²©¿Í£¬²¢²»±£Ö¤Á´½Ó¿ÉÓÃÐÔ£¬ÎªÁ˱£Ö¤ÔĶÁÌåÑ飬Çë·ÃÎÊhttp://blogs.msdn.com/azchina¡£
 
 
SQL AzureÊÇÒ»¸ö²¿ÊðÔÚÔÆ¶ËµÄ¹ØÏµÐÍÊý¾Ý¿âÒýÇæ£¬ËüÖ§³ÖSQL ServerÖоø´ó¶àÊýºÍ¿ª·¢ÓйصŦÄÜ¡£×÷Ϊһ¸ö²¿ÊðÔÚÔÆ¶ËµÄÊý¾Ý¿âÒýÇæ£¬¾ø´ó¶àÊýµÄ¹ÜÀí¹¤×÷¶¼ÓÉ΢ÈíΪÄãÍê³É£¬Òò´Ë ......

sqlÖÐ in ¡¢not in ¡¢exists¡¢not exists Ó÷¨ºÍ²î±ð


exists £¨sql ·µ»Ø½á¹û¼¯ÎªÕ棩 
not exists (sql ²»·µ»Ø½á¹û¼¯ÎªÕ棩 
ÈçÏ£º 
±íA 
ID NAME 
1    A1 
2    A2 
3  A3 
±íB 
ID AID NAME 
1    1 B1 
2  & ......
© 2009 ej38.com All Rights Reserved. ¹ØÓÚE½¡ÍøÁªÏµÎÒÃÇ | Õ¾µãµØÍ¼ | ¸ÓICP±¸09004571ºÅ