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LINQ to SQL ѧϰreference

http://weblogs.asp.net/scottgu/archive/2007/09/07/linq-to-sql-part-9-using-a-custom-linq-expression-with-the-lt-asp-linqdatasource-gt-control.aspx
1-9 parts are the most useful knowledge for you so far.


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select
emp_no,emp_name,dept,isnull(convert(char(10),birthday,120),'ÈÕÆÚ²»Ïê') birthday
from employee
order by dept
 
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SQL Server 2005 CTEµÄÓ÷¨

if object_id('[tb]') is not null
drop table [tb] 
go
create table [tb]([id] int,[col1] varchar(8),[col2] int) 
insert [tb] 
select 1,'ºÓ±±Ê¡',0 union all
 select 2,'ÐĮ̈ÊÐ',1 union all
 select 3,'ʯ¼ÒׯÊÐ',1 union all
 select 4,'ÕżҿÚÊÐ',1 union all
&n ......

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1.oracle
 sql   = "SELECT column_name, data_type, data_length, nullable";
 sql += " from user_tab_columns ";
 sql += " where table_name='";
 sql += $tableName;
 sql += "'";
 select * from user_tab_comments & ......
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