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 ......

SQL ÖеÄÃüÁî´óÈ«

--Óï ¾ä ¹¦ ÄÜ 
--Êý¾Ý²Ù×÷ 
SELECT --´ÓÊý¾Ý¿â±íÖмìË÷Êý¾ÝÐкÍÁР
INSERT --ÏòÊý¾Ý¿â±íÌí¼ÓÐÂÊý¾ÝÐР
DELETE --´ÓÊý¾Ý¿â±íÖÐɾ³ýÊý¾ÝÐР
UPDATE --¸üÐÂÊý¾Ý¿â±íÖеÄÊý¾Ý 
--Êý¾Ý¶¨Òå 
CREATE TABLE --´´½¨Ò»¸öÊý¾Ý¿â±í 
DROP TABLE --´ÓÊý¾Ý¿âÖÐɾ³ý±í 
......

asp.netÁ¬½ÓSQL ºÍACCESSÊý¾Ý¿â

ASP.NETÈçºÎÁ¬½ÓAccess»òSQL ServerÊý¾Ý¿â 
Ê×ÏÈ¿´Ò»¸öÀý×Ó´úÂëÆ¬¶Ï:
³ÌÐò´úÂë: 
--------------------------------------------------------------------------------
using System.Data;
using System.Data.OleDb;
......
string strConnection="Provider=Microsoft.Jet.OleDb.4.0;";
strConnection+ ......

Microsoft SQL Azure ³£¼ûÎÊÌâ½â´ð

¹«¸æ£º±¾²©¿ÍΪ΢ÈíÔÆ¼ÆËãÖÐÎIJ©¿ÍµÄ¾µÏñ²©¿Í£¬²¢²»±£Ö¤Á´½Ó¿ÉÓÃÐÔ£¬ÎªÁ˱£Ö¤ÔĶÁÌåÑ飬Çë·ÃÎÊhttp://blogs.msdn.com/azchina¡£
 
 
October CTPµÄ SQL Azure DatabaseµÄ¹Ø¼ü¹«¸æÊÇʲô£¿
    October CTPµÄSQL Azure database¶ÔÓÚPDC2009À´Ëµ»ù±¾¹¦ÄÜÒѾ­Íê³ÉÁË¡£ October CTP&nbs ......
© 2009 ej38.com All Rights Reserved. ¹ØÓÚE½¡ÍøÁªÏµÎÒÃÇ | Õ¾µãµØÍ¼ | ¸ÓICP±¸09004571ºÅ