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match_expression [ NOT ] LIKE pattern [ ESCAPE escape_character ]
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match_expression
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pattern
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WHERE title LIKE '%computer%' ½«²éÕÒ´¦ÓÚÊéÃûÈÎÒâλÖõİüº¬µ¥´Ê computer µÄËùÓÐÊéÃû¡£
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WHERE au_fname LIKE '_ean' ½«²éÕÒÒÔ ean ½áβµÄËùÓÐ 4 ¸ö×ÖĸµÄÃû×Ö£¨Dean¡¢Sean µÈ£©¡£
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WHERE au_lname LIKE '[C-P]arsen' ½«²éÕÒÒÔarsen ½áβÇÒÒÔ½éÓÚ C Óë P Ö®¼äµÄÈκε¥¸ö×Ö·û¿ªÊ¼µÄ×÷ÕßÐÕÊÏ£¬ÀýÈ磬Carsen¡¢Larsen¡¢Karsen µÈ¡£
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WHERE au_lname LIKE 'de[^l]%' ½«²éÕÒÒÔ de ¿ªÊ¼ÇÒÆäºóµÄ×Öĸ²»Îª l µÄËùÓÐ×÷ÕßµÄÐÕÊÏ¡£
 
escape_character
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1.bzscs(ɳ³æ ÎÒ°®Ð¡ÃÀ)Óú¯數µÄºÃ辦·¨:
CREATE    function [dbo].[calc_date](@time smalldatetime,@now smalldatetime)
returns nvarchar(10)
as
begin
declare @year int,@month int,@day int
select @year = datediff(yy,@time,@now)
if  (month(@now)=month(@time)) and (day ......

SQL·ÖÒ³²éѯ

/*µÚ¼¸Ò³±ØÐë´óÓÚ1
select top ÿҳÊýÁ¿ * id
 from @t a
 where id not in
 (select top (µÚ¼¸Ò³-1)*ÿҳÊýÁ¿ id
  from @t b
 )
*/
declare @lcSqlCommand nvarchar(100)
declare @t table (id int IDENTITY,orderDate datetime)
insert into @t
 select orderDate
&nb ......

Ö´ÐÐSQLÎÄ£¬Éú³ÉEXCEL

''' <summary>
''' SQLÎÄ執ÐÐ結¹û¤ÎEXCEL³öÁ¦
''' </summary>
''' <param name="connString">OLEDB½Ó続ÎÄ×ÖÁÐ</param>
''' <param name="sqlString">SQLÎÄ</param>
''' <param name="savePath">³öÁ¦¥Õ¥¡¥¤¥ë¥Ñ¥¹</param> ......

SQL select

--desc ±íÃû ÃèÊö±íµÄÄÚÈÝ  
desc emp;
--¼ÓÉÏÊýѧ±í´ïʽºÍÁÐÃû  ""±£³Ö¸ñʽ
select ename "name space", sal*12 year_sal from emp;   
select 2*3 from dual;
select sysdate from dual;
--¿ÕÖµµÄÊýѧ±í´ïʽ ½á¹û¶¼ÊÇ¿ÕÖµ
select ename, sal*12 + comm from emp;  
- ......

SQl SERVER 2000 ±éÀú±íÖÐÊý¾ÝµÄ·½·¨

·½·¨Ò»£ºÊ¹ÓÃÓαê
declare @ProductName nvarchar(50)
declare pcurr cursor for select ProductName from Products
open pcurr
fetch next from pcurr into @ProductName
while (@@fetch_status = 0)
begin
print (@ProductName)
fetch next from pcurr into @ProductName
end
close pcurr
deallocate pcurr ......
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