查询的奇怪问题... decimal.parse在存储过程中舍入，但不在查询中 [英] weird problem with query...decimal.parse rounding in stored procedure, but not in query
问题描述
我有一个存储过程，它根据第2列的值从第1列中提取值。然后第1列的值输出到显示在标签中的网页。
i有输入变量bc和输出变量fileName。例如，如果我输入10.00作为bc值，则fileSymbol会吐出正确的值，在这种情况下它是'0'。
如果我使用9.00作为输入，fileSymbol是正确的。
如果我使用9.7，但是，sproc最多为10，然后给我INCORRECT fileSymbol
相反，如果我使用9.3作为输入，sproc将其视为9.0，再次，我得到错误的符号。
我不太清楚如何解决这个问题。
这是我的代码，谢谢你的帮助...
存储过程：
i have a stored procedure which pulls the value from column 1 based on the value of column 2. the value from column 1 is then output to the webpage which displays it in a label.
i have input variable bc and output variable fileName. if, for example, i type in 10.00 for the bc value, the fileSymbol spits out the correct value, in this case it's '0'.
if i use 9.00 as the input, the fileSymbol is correct.
if i use 9.7, however, the sproc rounds up to 10 and then gives me the INCORRECT fileSymbol
conversely, if i use 9.3 as the input, the sproc treats this as 9.0 and again, i get the incorrect symbol.
i'm very unsure of how to fix this.
here's my code and thank you for any help...
stored proc:
<pre lang="SQL">
ALTER PROCEDURE getFilename
(
@bc decimal,
@fileSymbol varchar(50) output
)
AS
SELECT @fileSymbol=fileSymbol
FROM tempSymTab
WHERE base = @bc
网页：
webpage:
<head runat="server">
<title></title>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:TextBox ID="TextBox1" runat="server"></asp:TextBox>
<br />
<br />
<asp:Label ID="Label1" runat="server"></asp:Label>
<br />
<br />
<asp:Button ID="Button1" runat="server" onclick="Button1_Click" Text="Button" />
</div>
</form>
</body>
codebehind（是的它很草率，我正在尝试测试并确保我先得到正确的值）
codebehind (yes it's sloppy, i'm trying to test and make sure i get the right value first)
using System;
using System.Data;
using System.Data.SqlClient;
using System.Configuration;
using System.Collections;
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;
public partial class _Default : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
if (IsPostBack)
{
string connSTR = ConfigurationManager.ConnectionStrings["connStr"].ToString();
SqlConnection conn = new SqlConnection(connSTR);
Class1 c1 = new Class1();
SqlCommand cmd = new SqlCommand("dbo.getFileName", conn);
cmd.CommandType = CommandType.StoredProcedure;
cmd.Parameters.AddWithValue("@bc", SqlDbType.Decimal).Value = decimal.Parse(TextBox1.Text);
SqlParameter parm2 = new SqlParameter("@fileSymbol", SqlDbType.VarChar);
parm2.Size = 50;
parm2.Direction = ParameterDirection.Output;
cmd.Parameters.Add(parm2);
conn.Open();
cmd.ExecuteNonQuery();
conn.Close();
string outputValue = cmd.Parameters["@fileSymbol"].Value.ToString();
Label1.Text = outputValue;
}
}
protected void Button1_Click(object sender, EventArgs e)
{
string connSTR = ConfigurationManager.ConnectionStrings["connStr"].ToString();
SqlConnection conn = new SqlConnection(connSTR);
Class1 c1 = new Class1();
SqlCommand cmd = new SqlCommand("dbo.getFileName", conn);
cmd.CommandType = CommandType.StoredProcedure;
cmd.Parameters.AddWithValue("@bc", SqlDbType.Decimal).Value = decimal.Parse(TextBox1.Text);
SqlParameter parm2 = new SqlParameter("@fileSymbol", SqlDbType.VarChar);
parm2.Size = 50;
parm2.Direction = ParameterDirection.Output;
cmd.Parameters.Add(parm2);
conn.Open();
cmd.ExecuteNonQuery();
conn.Close();
string outputValue = cmd.Parameters["@fileSymbol"].Value.ToString();
Label1.Text = outputValue;
}
推荐答案
检查：
Check this:
DECLARE @bc VARCHAR(10)
SET @bc = '9.1'
SELECT CONVERT(DECIMAL, @bc) As NewBC
SELECT CONVERT(DECIMAL(8,0), @bc) As NewBC
SELECT CONVERT(DECIMAL(8,2), @bc) As NewBC
结果：
Results:
9
9
9.1
你看到了区别吗？
请看看这里：数据类型（T-SQL） [ ^ ]
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