Tsql 不能执行此T-SQL函数

无法执行此函数，我收到错误信息：

必须声明表变量“@Handle”

功能定义：

CREATE FUNCTION [dbo].[FnGetHandle]()
RETURNS INT
AS
  BEGIN
      DECLARE @Handle AS INT;
      DECLARE @strUser AS NCHAR(256);

      SET @Handle = 0;
      SET @strUser = CURRENT_USER;

      INSERT INTO tbl_handle
      Output      Handle
      INTO @Handle ( UserName )
      VALUES      ( @strUser );

      RETURN @Handle
  END

表定义：

CREATE FUNCTION [dbo].[FnGetHandle]()
RETURNS INT
AS
  BEGIN
      DECLARE @Handle AS INT;
      DECLARE @strUser AS NCHAR(256);

      SET @Handle = 0;
      SET @strUser = CURRENT_USER;

      INSERT INTO tbl_handle
      Output      Handle
      INTO @Handle ( UserName )
      VALUES      ( @strUser );

      RETURN @Handle
  END

tbl_句柄定义（句柄int标识，用户名nvarchar，已创建 （日期）

---

output

命令输出到表或表变量。您可以创建一个保存输出值的表变量

declare @T table(handle int)

insert into ...
select ...
output inserted.Handle into @T

select @Handle = handle
from @T

return @Handle

---

output

命令输出到表或表变量。您可以创建一个保存输出值的表变量

declare @T table(handle int)

insert into ...
select ...
output inserted.Handle into @T

select @Handle = handle
from @T

return @Handle