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以下CLR函數的構建將在自動生成的SQL中獲得以下錯誤/* Error: Unsupported type. */。哪種類型導致了問題？以MSDN文檔https://msdn.microsoft.com/en-us/library/ms131103.aspx爲例來創建Clr函數。CLR功能不支持的類型
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-- This code was generated by a tool.
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-- Changes to this file may cause incorrect behavior and will be lost if
-- the code is regenerated.
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CREATE FUNCTION [dbo].[InitMethod] (@path [nvarchar](MAX), @pattern [nvarchar](MAX), @recursive [bit])
RETURNS /* Error: Unsupported type. */
AS EXTERNAL NAME [ListFiles].[FileList].[InitMethod];
以下是C＃代碼。
public class FileInf
{
public string Name { get; set; }
public DateTime LastWriteTime { get; set; }
public long Length { get; set; }
public bool IsFile { get; set; }
};
[SqlFunction(FillRowMethodName = "FillRow")]
public static IEnumerable InitMethod(string path, string pattern, bool recursive)
{
var dir = new DirectoryInfo(path);
var files = dir.GetFiles(pattern, recursive ? SearchOption.AllDirectories : SearchOption.TopDirectoryOnly);
foreach (var f in files)
{
yield return new FileInf
{
Name = f.Name,
LastWriteTime = f.LastWriteTime,
Length = f.Length,
IsFile = (f.Attributes & FileAttributes.Directory) == FileAttributes.Directory ? false : true
};
}
}
public static void FillRow(Object obj,
out SqlChars name,
out SqlDateTime lastWriteTime,
out SqlInt64 Length,
out SqlBoolean isFile)
{
var fileInfo = (FileInf)obj;
name = new SqlChars(fileInfo.Name);
lastWriteTime = new SqlDateTime(fileInfo.LastWriteTime);
Length = new SqlInt64(fileInfo.Length);
isFile = new SqlBoolean(fileInfo.IsFile);
}
您可以發佈確切的錯誤嗎？數量，嚴重程度，狀態，消息。 –
錯誤被嵌入到visual studio中生成的代碼中（問題中代碼的第一個塊）。然後它在'AS'下有錯誤，因爲沒有主體。 – ca9163d9
它看起來像C＃回饋4個輸出，而功能只設置爲3。是嗎？ – SQLHound