sql 2005 ·ÖÒ³£¬ÅÅÃûº¯Êý
WITH V AS(SELECT ROW_NUMBER() OVER(order by fcustid desc) AS RN,* from ts_dict AS SourceView)
SELECT * from V WHERE RN BETWEEN 1 AND 10
×ªÔØµØÖ·£ºhttp://www.cnblogs.com/nokiaguy/archive/2009/02/05/1384860.html
ÅÅÃûº¯ÊýÊÇSQL Server2005мӵŦÄÜ¡£ÔÚSQL Server2005ÖÐÓÐÈçÏÂËĸöÅÅÃûº¯Êý£º
1. row_number
2. rank
3. dense_rank
4. ntile
ÏÂÃæ·Ö±ð½éÉÜÒ»ÏÂÕâËĸöÅÅÃûº¯ÊýµÄ¹¦Äܼ°Ó÷¨¡£ÔÚ½éÉÜ֮ǰ¼ÙÉèÓÐÒ»¸öt_table±í£¬±í½á¹¹Óë±íÖеÄÊý¾ÝÈçͼ1Ëùʾ£º
ͼ1
ÆäÖÐfield1×ֶεÄÀàÐÍÊÇint£¬field2×ֶεÄÀàÐÍÊÇvarchar
Ò»¡¢row_number
row_numberº¯ÊýµÄÓÃ;ÊǷdz£¹ã·º£¬Õâ¸öº¯ÊýµÄ¹¦ÄÜÊÇΪ²éѯ³öÀ´µÄÿһÐмǼÉú³ÉÒ»¸öÐòºÅ¡£row_numberº¯ÊýµÄÓ÷¨ÈçÏÂÃæµÄSQLÓï¾äËùʾ£º
select row_number() over(order by field1) as row_number,* from t_table
ÉÏÃæµÄSQLÓï¾äµÄ²éѯ½á¹ûÈçͼ2Ëùʾ¡£
ͼ2
ÆäÖÐrow_numberÁÐÊÇÓÉrow_numberº¯ÊýÉú³ÉµÄÐòºÅÁС£ÔÚʹÓÃrow_numberº¯ÊýÊÇҪʹÓÃover×Ó¾äÑ¡Ôñ¶ÔijһÁнøÐÐÅÅÐò£¬È»ºó²ÅÄÜÉú³ÉÐòºÅ¡£
ʵ¼ÊÉÏ£¬row_numberº¯ÊýÉú³ÉÐòºÅµÄ»ù±¾ÔÀíÊÇÏÈʹÓÃover×Ó¾äÖеÄÅÅÐòÓï¾ä¶Ô¼Ç¼½øÐÐÅÅÐò£¬È»ºó°´×ÅÕâ¸ö˳ÐòÉú³ÉÐòºÅ¡£over×Ó¾äÖеÄorder by×Ó¾äÓëSQLÓï¾äÖеÄorder by×Ó¾äûÓÐÈκιØÏµ£¬ÕâÁ½´¦µÄorder by ¿ÉÒÔÍêÈ«²»Í¬£¬ÈçÏÂÃæµÄSQLÓï¾äËùʾ£º
select row_number() over(order by field2 desc) as row_number,* from t_table order by field1 desc
ÉÏÃæµÄSQLÓï¾äµÄ²éѯ½á¹ûÈçͼ3Ëùʾ¡£
ͼ3
ÎÒÃÇ¿ÉÒÔʹÓÃrow_numberº¯ÊýÀ´ÊµÏÖ²éѯ±íÖÐÖ¸¶¨·¶Î§µÄ¼Ç¼£¬Ò»°ã½«ÆäÓ¦Óõ½WebÓ¦ÓóÌÐòµÄ·ÖÒ³¹¦ÄÜÉÏ¡£ÏÂÃæµÄSQLÓï¾ä¿ÉÒÔ²éѯt_table±íÖеÚ2ÌõºÍµÚ3Ìõ¼Ç¼£º
with t_rowtable
as
(
select row_number() over(order by field1) as row_number,* from t_table
)
select * from t_rowtable where row_number>1 and row_number < 4 order by f
Ïà¹ØÎĵµ£º
ÏÂÃæÊÇÎÒËѼ¯µÄһЩ¾«ÃîµÄSQLÓï¾ä¡£
˵Ã÷£º¸´ÖƱí(Ö»¸´Öƽṹ,Ô´±íÃû£ºa бíÃû£ºb)
SQL: select * into b from a where 1<>1
˵Ã÷£º¿½±´±í(¿½±´Êý¾Ý,Ô´±íÃû£ºa Ä¿±ê±íÃû£ºb)
SQL: insert into b(a, b, c) select d,e,f from b;
˵Ã÷£ºÏÔʾÎÄÕ¡¢Ìá½»È˺Í×îºó»Ø¸´Ê±¼ä
SQL: select a.title,a.username,b.adddat ......
»ùÓÚSQL Server ·ÖÒ³´æ´¢¹ý³ÌµÄÑݽø ÊÕ²Ø
Õë¶ÔÊý¾Ý¿âÊý¾ÝÔÚUI½çÃæÉϵķÖÒ³ÊÇÀÏÉú³£Ì¸µÄÎÊÌâÁË£¬ÍøÉϺÜÈÝÒ×ÕÒµ½¸÷Ö֓ͨÓô洢¹ý³Ì”´úÂ룬¶øÇÒÓÐЩ»¹¶¨ÖƲéѯÌõ¼þ£¬¿´ÉÏȥʹÓúܷ½±ã¡£±ÊÕß´òËãͨ¹ý±¾ÎÄÒ²À´¼òµ¥Ì¸Ò»Ï»ùÓÚSQL SERVER 2000µÄ·ÖÒ³´æ´¢¹ý³Ì£¬Í¬Ê±Ì¸Ì¸SQL SERVER 2005Ï·ÖÒ³´æ´¢¹ý³ÌµÄÑ ......
½ñÌìÔÚÏîÄ¿ÖÐÓÐÒ»ÎÊÌ⣬ÔÚÍøÉϲéѯÁËcaseµÄÓ÷¨£¬Ìû³öÀ´ºÍ´ó¼Ò·ÖÏíÏ¡£
ÎÊÌâÃèÊö£ºÔÚÒ»ÕűíÖÐÓÐÒ»×Ö¶ÎbitÀàÐÍ£¬±íʾ´ËÌõÊý¾ÝÊÇ·ñ±»Ëø¶¨£¬ÔÚÒ³ÃæÉÏÓÐÒ»°´Å¥ÊǶԴËÌõÊý¾Ý½øÐÐËø¶¨ºÍ½âËøµÄ£¬Ñ¡ÔñÒ³ÃæÖеÄÊý¾Ý£¬µã»÷Õâ¸ö°´Å¥£¬Èç¹ûÕâÌõÊý¾ÝÊÇËø¶¨µÄ£¬¾Í½âËø£»Èç¹ûÊÇδ˵¶¨µÄ¾ÍËø¶¨£¬ÕâÑù¾ÍÓÃÒ»ÌõÓï¾äÀ´ÊµÏÖ¡£ºóÀ´Ï ......
--»ùÓÚʱ¼äSQLº¯Êý--
getdate() --·µ»Øµ±Ç°ÏµÍ³ÈÕÆÚºÍʱ¼ä¡£
DateAdd --ÔÚÏòÖ¸¶¨ÈÕÆÚ¼ÓÉÏÒ»¶Îʱ¼äµÄ»ù´¡ÉÏ£¬·µ»ØÐ嵀 datetime Öµ¡£
DATEADD ( datepart , number, date )
--Àý£ºÏòµ±ÌìµÄʱ¼äÔö¼Ó5Ìì
select dateadd(dd,5,getdate())
datediff --·µ»Ø¿çÁ½¸öÖ¸¶¨ÈÕÆÚµÄÈÕÆÚºÍʱ¼ä±ß½çÊý¡£]
---ÀýÈç
& ......
1.¶Á³ö±íÖеÄ×Ö¶ÎÃû
ResultSet rs = test.selectSql("SELECT * from datainfo");
java.sql.ResultSetMetaData md=rs.getMetaData(); //¶Á³öÊý¾Ý¿âµÄ×Ö¶ÎÃû
int nColumn=md.getColumnCount(); //×Ö¶Î×ÜÊý
for(int i=0;i<nColumn;i++)
& ......