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ADO 精度 属性


❮ 字段对象完整参考

Precision 属性设置或返回一个字节值,该值表示在 Parameter 或 Field 对象中表示数值时允许的最大位数。

对象 Precision 属性的描述
字段

在 Field 对象上,Precision 属性通常是只读的,但对于已添加到 Record 的 Fields 集合的新 Field 对象,在为 Field 指定 Value 属性并且提供程序通过调用 Fields 集合的 Update 方法成功添加新 Field 后,它是可读写的。

参数 Precision 属性在 Parameter 对象上具有读写权限。

语法

objectname.Precision

示例

<%
set conn=Server.CreateObject("ADODB.Connection")
conn.Provider="Microsoft.Jet.OLEDB.4.0"
conn.Open "c:/webdata/northwind.mdb"

set rs = Server.CreateObject("ADODB.Recordset")
rs.open "Select * from orders", conn

response.write(rs.Fields(0).Precision)

rs.Close
conn.close
%>

❮ 字段对象完整参考
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