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

sqlÊý×ÖתӢÎÄ

create function decodehundred(@hundredstring varchar(300) )
returns  varchar(1000)
as
begin
declare  @tmp varchar(1000),@decodehundred varchar(1000)
set @decodehundred = ''
declare @strno1 varchar(1000)
select  @strno1 = 'One       Two       Three     Four      Five      ' +
                  'Six       Seven     Eight     Nine      Ten       ' +
                  'Eleven    Twelve    Thirteen  Fourteen  Fifteen   '+
                  'Sixteen   Seventeen Eighteen  Nineteen  '
declare @strtens1 varchar(1000)
set @strtens1 =   'Ten       Twenty    Thirty    Forty     Fifty     ' +
                  'Sixty     Seventy   Eighty    Ninety    '
declare @unit4  varchar(10)
set @unit4 = 'Hundred'
if len(@hundredstring) > 0 and len(@hundredstring) <= 3 
begin    
    if len(@hundredstring) = 1
    begin
        set @tmp = cast(@hundredstring as int)
        if @tmp <> 0 
            set @decodehundred =
 &


Ïà¹ØÎĵµ£º

SQL Serverº¯Êý´óÈ«

--¾ÛºÏº¯Êý
use pubs
go
select avg(distinct price)  --ËãÆ½¾ùÊý
from titles
where type='business'
go 
use pubs
go
select max(ytd_sales)  --×î´óÊý
from titles
go 
use pubs
go
select min(ytd_sales) --×îÐ¡Ê ......

SQL round()Ïê½â


SQLÖÐround£¨£©º¯ÊýÓ÷¨
SQL round()Ïê½â
roundÓÐÁ½¸öÖØÔØ,Ò»¸öÓдøÓÐÁ½¸ö²ÎÊýµÄ,Ò»¸öÊÇ´øÓÐÈý¸ö²ÎÊýµÄ,
ÿһ¸ö²ÎÊý¶¼ÏàͬÊÇÒª´¦ÀíµÄÊý,
1.´øÓÐÁ½¸ö²ÎÊý.ÿ¶þ¸ö²ÎÊýÊÇСÊýµãµÄ×ó±ßµÚ¼¸Î»»òÓұߵڼ¸Î»,·Ö±ðÓÃÕý¸º±íʾ.×ó±ßΪ¸º,ÓÒ±ßΪ¸º.ΪËÄÉáÎåÈë.
select round(748.585929,-1) 750.000000
select round(748.58592 ......

SQL UnionºÍUnion AllµÄʹÓ÷½·¨

¡¡UNIONÖ¸ÁîµÄÄ¿µÄÊǽ«Á½¸öSQLÓï¾äµÄ½á¹ûºÏ²¢ÆðÀ´¡£´ÓÕâ¸ö½Ç¶ÈÀ´¿´£¬ ÎÒÃÇ»á²úÉúÕâÑùµÄ¸Ð¾õ£¬UNION¸úJOINËÆºõÓÐЩÐíÀàËÆ£¬ÒòΪÕâÁ½¸öÖ¸Áî¶¼¿ÉÒÔÓɶà¸ö±í¸ñÖÐߢȡ×ÊÁÏ¡£ UNIONµÄÒ»¸öÏÞÖÆÊÇÁ½¸ö SQL Óï¾äËù²úÉúµÄÀ¸Î»ÐèÒªÊÇͬÑùµÄ×ÊÁÏÖÖÀà¡£ÁíÍ⣬µ±ÎÒÃÇÓà UNIONÕâ¸öÖ¸Áîʱ£¬ÎÒÃÇÖ»»á¿´µ½²»Í¬µÄ×ÊÁÏÖµ (ÀàËÆ SELECT DISTINCT) ......

C#Á¬½ÓACESSʱ£¬sqlÓï¾äÓдí

ÔÚдsqlÓï¾äʱ£¬Ò»°ã¶¼ÊÇÒ»¾ä½â¾ö£¬´ÓÀ´Ã»Ïë¹ý˵£¬°ÑsqlÓï¾ä²ð¿ªÀ´Ð´¡£
ÀýÈçÏÂÃæÕâ¾ä£º  string readstring = "select * from ʵÀý where ʵÀýID='"+eid+"'";
È»ºóÖ´ÐÐ Myconnection();
        DataSet ds = new DataSet();
        OleD ......
© 2009 ej38.com All Rights Reserved. ¹ØÓÚE½¡ÍøÁªÏµÎÒÃÇ | Õ¾µãµØÍ¼ | ¸ÓICP±¸09004571ºÅ