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/*******  µ¼³öµ½excel
EXEC master..xp_cmdshell ’bcp SettleDB.dbo.shanghu out c:\temp1.xls -c -q -S"GNETDATA/GNETDATA" -U"sa" -P""’
/***********  µ¼ÈëExcel
SELECT *
from OpenDataSource( ’Microsoft.Jet.OLEDB.4.0’,
  ’Data Source="c:\test.xls";User ID=Admin;Password=;Extended properties=Excel 5.0’)...xactions
SELECT cast(cast(¿ÆÄ¿±àºÅ as numeric(10,2)) as nvarchar(255))+’¡¡’ ת»»ºóµÄ±ðÃû
from OpenDataSource( ’Microsoft.Jet.OLEDB.4.0’,
  ’Data Source="c:\test.xls";User ID=Admin;Password=;Extended properties=Excel 5.0’)...xactions
/** µ¼ÈëÎı¾Îļþ
EXEC master..xp_cmdshell ’bcp "dbname..tablename" in c:\DT.txt -c -Sservername -Usa -Ppassword’
/** µ¼³öÎı¾Îļþ
EXEC master..xp_cmdshell ’bcp "dbname..tablename" out c:\DT.txt -c -Sservername -Usa -Ppassword’
»ò
EXEC master..xp_cmdshell ’bcp "Select * from dbname..tablename" queryout c:\DT.txt -c -Sservername -Usa -Ppassword’
µ¼³öµ½TXTÎı¾£¬ÓöººÅ·Ö¿ª
exec master..xp_cmdshell ’bcp "¿âÃû..±íÃû" out "d:\tt.txt" -c -t ,-U sa -P password’
BULK INSERT ¿âÃû..±íÃû
from ’c:\test.txt’
WITH (
    FIELDTERMINATOR = ’;’,
    ROWTERMINATOR = ’\n’
)
--/* dBase IVÎļþ
select * from
OPENROWSET(’MICROSOFT.JET.OLEDB.4.0’
,’dBase IV;HDR=NO;IMEX=2;DATABASE=C:\’,’select * from [¿Í»§×ÊÁÏ4.dbf]’)
--*/
--/* dBase IIIÎļþ
select * from
OPENROWSET(’MICROSOFT.JET.OLEDB.4.0’
,’dBase III;HDR=NO;IMEX=2;DATABASE=C:\’,’select * from [¿Í»§×ÊÁÏ3.dbf]’)
--*/
--/* FoxPro Êý¾Ý¿â
select * from openrowset(’MSDASQL’,
’Driver=Microsoft Visual FoxPro Driver;SourceType=DBF;SourceDB=c:\’,
’select * from [aa.DBF]’)
--*/
/**************µ¼ÈëDBFÎļþ****************/
select * from openrowse


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select top 100 * from mytable order by operateDate
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select * from (select top 100 * from mytable ) a   order  by a.operateDate
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CAST ( expression AS data_type )
ʹÓà CONVERT£º
CONVERT (data_type[(length)], expression [, style])
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1¡¢¶¨ÒåÖ¸Á£ºusing System.Data.SqlClient;
2¡¢¶¨ÒåsqlÁ¬½Ó£º SqlConnection conn= new SqlConnection("server=(local);database=colorring;uid=sa;pwd=;");
3¡¢´ò¿ªsqlÁ¬½Ó£º conn.Open();
4¡¢¶¨ÒåsqlÓï¾ä£ºstring sqlstr = "insert into test values (123321)";
5¡¢×é×°sqlÓï¾äºÍÁ¬½Ó£ºSqlCommand cmd = new SqlCo ......
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