SQL ¶àÐкϲ¢Îª1ÐÐ ÐèҪдº¯Êý
select * from formtable_main_20
sp_help formtable_main_20
--drop view zcountQJ01
create view zcountQJ01
as
select appman ,year(startdata) as zyear,jb,cast(sum(num) as decimal(4,1) ) as num
from formtable_main_20
where year(getdate()) = year(startdata)
group by appman,jb,year(startdata)
select * from zcountQJ01
--drop function fn_str
--´´½¨º¯Êý
CREATE function dbo.fn_strqj(@var_appman int)
returns varchar(100)
as
begin
declare @var varchar(100)
set @var=''
select @var=@var+
-- cast(jb as varchar(10))
case jb
when 0 then 'ʼÙ'
when 1 then '²¡¼Ù'
when 2 then '»é¼Ù'
when 3 then 'É¥¼Ù'
when 4 then '²¸Èé¼Ù'
when 5 then '̽Ç×¼Ù'
when 6 then '¹«ÐݼÙ'
when 7 then 'Äê¼Ù'
when 8 then 'ÆäËû'
when 8 then '»¤Àí¼Ù'
end
+':'+cast(num as
Ïà¹ØÎĵµ£º
sql DATEPARTº¯ÊýʹÓÃ(Õª³)
sql DATEPARTº¯ÊýʹÓÃ
DATEPART
·µ»Ø´ú±íÖ¸¶¨ÈÕÆÚµÄÖ¸¶¨ÈÕÆÚ²¿·ÖµÄÕûÊý¡£
Óï·¨
DATEPART ( datepart ,date )
²ÎÊý
datepart
ÊÇÖ¸¶¨Ó¦·µ»ØµÄÈÕÆÚ²¿·ÖµÄ²ÎÊý¡£Ï±íÁгöÁË Microsoft® SQL Server™ ʶ±ðµÄÈÕÆÚ²¿·ÖºÍËõд¡£
ÈÕÆÚ²¿·ÖËõд
year
yy, yyyy
quarter
qq, q
mont ......
Ò»¡¢ÄÚ²¿º¯Êý
1¡¢ÄÚ²¿ºÏ¼Æº¯Êý
1£©COUNT£¨*£© ·µ»ØÐÐÊý
2£©COUNT£¨DISTINCT COLNAME£©·µ»ØÖ¸¶¨ÁÐÖÐΨһֵµÄ¸öÊý
3£©SUM£¨COLNAME/EXPRESSION£©·µ»ØÖ¸¶¨Áлò±í´ïʽµÄÊýÖµºÍ£»
4£©SUM£¨DISTINCT COLNAME£© ·µ»ØÖ¸¶¨ÁÐÖÐΨһֵµÄºÍ
5£©AVG£¨COLNAME/EXPRESSION£©·µ»ØÖ¸¶¨Áлò±í´ïʽÖеÄÊýֵƽ¾ùÖµ
6£©AV ......
SQL´¥·¢Æ÷ʵÀý½²½â
2008-10-31 21:06
SQL´¥·¢Æ÷ʵÀý1
¶¨Ò壺 ºÎΪ´¥·¢Æ÷£¿ÔÚSQL ServerÀïÃæÒ²¾ÍÊǶÔijһ¸ö±íµÄÒ»¶¨µÄ²Ù×÷£¬´¥·¢Ä³ÖÖÌõ¼þ£¬´Ó¶øÖ´ÐеÄÒ»¶Î³ÌÐò¡£´¥·¢Æ÷ÊÇÒ»¸öÌØÊâµÄ´æ´¢¹ý³Ì¡£
³£¼ûµÄ´¥·¢Æ÷ÓÐÈýÖÖ£º·Ö±ðÓ¦ÓÃÓÚInsert , Update , Delete ʼþ¡£
&nbs ......
Êý¾Ý²ã´ÎµÄ¸ÅÄî:
Êý¾Ý²ã´ÎÊDZí´ïÊý¾ÝµÄÒ»ÖÖÖØÒª¹ØÏµ£¬ÔÚÊý¾Ý¿âµÄÉè¼ÆÖУ¬È磺×éÖ¯½á¹¹·Ö½â¡¢¹¤×÷ÈÎÎñ·Ö½â¡¢ÐÐÕþÇø»®µÄ·Ö½âµÈ¶¼ÊDzã´Î¹ØÏµÊý¾ÝµÄµäÐÍʵÀý¡£
±í´ï²ã´Î¹ØÏµµÄÊý¾ÝÒ»°ãÐèҪʵÏÖÈçÏÂÊôÐÔ£º
1.²ã´ÎµÄ×î´ó¼¶Áª²ã´ÎÊý¡£È磺Öйú£>ºþÄÏÊ¡->³¤É³ÊÐ->Óê»¨Çø£¬¾ÍÊÇ4²ã¡£
2.ÄÜ·´Ó³Í¬Ò»² ......
¶ÔÈÕ³£¹¤×÷ÖÐÓõ½µÄ¸Ð¾õÓÐÓõÄsqlÓï¾ä×ö¸ö¹éÄÉ£¬ÓÃÓÚ½ñºóιÊ֪С£
*¸´ÖÆ±í£º
create table tablename as select * from table_src;
create table tablename as select * from table_src where 1 <> 1; --Ö»¸´ÖƱí½á¹¹ ......