SQLÖÐCONVERTת»¯º¯ÊýµÄÓ÷¨
¸ñʽ:
CONVERT(data_type,expression[,style])
˵Ã÷:
´ËÑùʽһ°ãÔÚʱ¼äÀàÐÍ(datetime,smalldatetime)Óë×Ö·û´®ÀàÐÍ(nchar,nvarchar,char,varchar)
Ï໥ת»»µÄʱºò²ÅÓõ½.
Àý×Ó:
SELECT CONVERT(varchar(30),getdate(),101) now
½á¹ûΪ:
now
---------------------------------------
|09/15/2001
===================================================================
styleÊý×ÖÔÚת»»Ê±¼äʱµÄº¬ÒåÈçÏÂ:
------------------------------------------------------------------------------------------------------------
Style(2λ±íʾÄê·Ý) | Style(4λ±íʾÄê·Ý) | ÊäÈëÊä³ö¸ñʽ
------------------------------------------------------------------------------------------------------------
0 | 100 | mon dd yyyy hh:miAM(»òPM)
------------------------------------------------------------------------------------------------------------
1 | 101 ÃÀ¹ú | mm/dd/yy &nb
Ïà¹ØÎĵµ£º
--
SQL Server£º
Select
TOP
N
*
from
TABLE
Order
By
NewID
()
--
Access£º
Select
TOP
N
*
from
TABLE
Order
By
Rnd(ID)
Rnd(ID) ÆäÖеÄID ......
·þÎñÆ÷¶Ë×Ö·û¼¯NLS_LANG=SIMPLIFIED CHINESE_CHINA.ZHS16GBK
¿ØÖÆÎļþctl:
LOAD DATA
CHARACTERSET ZHS16GBK
INFILE 'c:\test.csv'
APPEND INTO TABLE stk_al_version
FIELDS TERMINATED BY ","
(org_no,stk_c,version,name)
¼ÓÈëºìÉ«Õâ¶ÎÎÄ×Ö ......
¿Í»§Ãû³Æ
´óÁ¬Ä³ÍøÂçÓÎÏ··þÎñÆ÷ £¨SQL SERVER 2008£© ÐÞ¸´³É¹¦
Êý¾Ý¿â°æ±¾
SQL SERVER 2008
Îļþ´óС
5G
¹ÊÕÏÃèÊö
¿Í»§µÄÓÎÏ··þ ......
tempdb¶ÔSQL ServerÊý¾Ý¿âÐÔÄÜÓкÎÓ°Ïì
±¾ÎĹؼü´Ê£ºSQL Server ÍøÂç
Ïà·´Èç¹û·ÃÎʺÜƵ·±,loading¾Í»á¼ÓÖØ,tempdbµÄÐÔÄܾͻá¶ÔÕû¸öDB²úÉúÖØÒªµÄÓ°Ïì.ÓÅ»¯tempdbµÄÐÔÄܱäµÄºÜÖØÒªµÄ,ÓÈÆä¶ÔÓÚ´óÐÍÊý¾Ý¿â.Èç¹ûʹÓÃÁÙʱ±í´¢´æ´óÁ¿µÄÊý¾ÝÇÒƵ·±·ÃÎÊ,¿¼ÂÇÌí¼ÓindexÒÔÔö¼Ó²éѯЧÂÊ.
¡¡ 1.SQL ServerϵͳÊý¾Ý¿â½é ......
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 ......