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select floor(5.534) from dual;
select trunc(5.534) from dual;
ÉÏÃæÁ½ÖÖÓ÷¨¶¼¿ÉÒÔ¶ÔÊý×Ö5.534ÏòÏÂÈ¡Õû£¬½á¹ûΪ5.
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select ceil(5.534) from dual;
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SELECT round(5.534) from dual;
SELECT round(5.534,0) from dual;
SELECT round(5.534,1) from dual;
SELECT round(5.534,2) from dual;
½á¹û·Ö±ðΪ 6,  6,  5.5,  5.53
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select trunc(5.534,0) from dual;
select trunc(5.534,1) from dual;
select trunc(5.534,2) from dual;
½á¹û·Ö±ðÊÇ 5,5.5,5.53£¬ÆäÖб£Áô0λСÊý¾ÍÏ൱ÓÚÖ±½ÓÈ¡ÕûÁË¡£
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select to_char(12345.123,'99999999.9999') from dual;
½á¹ûΪ12345.123
select to_char(12345.123,'99999999.9900') from dual;
СÊýºóµÚÈýµÚËÄΪ²»×ã²¹0£¬½á¹ûΪ12345.1230
select to_char(0.123,'99999999.9900') from dual;
select to_char(0.123,'99999990.9900') from dual;
½á¹û·Ö±ðΪ .123, 0.123


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var
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using System;
using System.Data;
using System.Configuration;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.Data.SqlClient;
/// <summary>
/ ......
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