奇怪的MySQL導致ASP

Question

我有下面的代碼：

strSQL = "SELECT COUNT(*) AS anz FROM tbl_ergebnisse WHERE testavg >0" 
set rs3 = Conn.Execute(strSQL) 
Response.Write "Count(*): <br>" 
if not rs3.eof then 
    Response.Write "Anz: " & rs3("anz") 
else 
    Response.Write "EOF" 
end if 

strSQL = "SELECT testavg FROM tbl_ergebnisse WHERE testavg >0" 
set rs2 = Conn.Execute(strSQL) 

Response.Write "Entries: <br>" 
do while not rs2.eof 
    Response.Write rs2("testavg") & "<br>" 
rs2.MoveNext() 
loop 

strSQL = "SELECT AVG(testavg) AS mittelwert FROM tbl_ergebnisse WHERE testavg >0" 
set rs = Conn.Execute(strSQL) 

if not rs.eof then 
    Response.Write "Mittelwert: " & rs("mittelwert") 
else 
    Response.Write "EOF" 
end if 

這給了我一個奇怪的結果： 查詢1返回「4」（計數是正確的）。查詢2返回任何結果，也QUERY3不返回任何結果

表「tbl_ergebnisse」看起來像這樣

testavg (DECIMAL) 

與條目：3; 3; 4; 5;

從表中的數據截圖可以在這裏找到：www.trinews.at/data.png

任何建議，爲什麼我得到一個空的記錄？直接在數據庫上運行查詢返回正確的值。

Answer 1

嘗試使用CAST在你的MySQL語句轉換成十進制類型爲一個數字，ASP ADODB可以理解，否則ASP不能識別從MySQL的結果，並認爲這是EOF。例如：

SELECT CAST(SUM(Entry_Data_1) as UNSIGNED) as score FROM contests_entries 

Answer 2

我重新創建與SQL Server Express與Decimal（18,0）字段類型的問題，它按預期工作。

嘗試使用CDbl將結果轉換爲雙倍，如下所示。

strSQL = "SELECT testavg FROM tbl_ergebnisse WHERE testavg >0" 
set rs2 = Conn.Execute(strSQL) 
Response.Write "Entries: <br>" 
do while not rs2.eof  
    Response.Write CDbl(rs2("testavg")) & "<br>" 
rs2.MoveNext() 
loop 



strSQL = "SELECT AVG(testavg) AS mittelwert FROM tbl_ergebnisse WHERE testavg >0" 
set rs = Conn.Execute(strSQL) 
if not rs.eof then  
    Response.Write "Mittelwert: " & CDbl(rs("mittelwert")) 
else  
    Response.Write "EOF" 
end if