Oracle 中的循环和游标到 Sql Server

Question

我有一段代码用于尝试将其从 Oracle 转换为 Sql Server 的函数：

甲骨文代码：

    If nDaysAfter = 0 then

    while (IsHoliday(dNextDay) = 1) or (RTrim(To_Char(dNextDay, 'DAY')) in ('SATURDAY','SUNDAY')) Loop
    dNextDay := dNextDay + 1;
  End Loop;

  RETURN dNextDay;

Else   dNextDay := dNextDay + 1;
  For i in 1..nDaysAfter Loop

    while (IsHoliday(dNextDay) = 1) or (RTrim(To_Char(dNextDay, 'DAY')) in ('SATURDAY','SUNDAY')) Loop
      dNextDay := dNextDay + 1;
    End Loop;
    dNextDay := dNextDay + 1;

  End Loop;
  RETURN dNextDay - 1;
  End if;

Sql 服务器代码：

    If @nDaysAfter = 0 begin

   while (IsHoliday(@dNextDay) = 1) or (RTrim(convert(char,@dNextDay, 'DAY')) in ('SATURDAY','SUNDAY')) Begin
    SET @dNextDay = @dNextDay + 1;
  End;

 RETURN @dNextDay;

End
Else BEGIN 
SET @dNextDay = @dNextDay + 1;
Declare i CURSOR for 1..nDaysAfter Loop

while (IsHoliday(@dNextDay) = 1) or (RTrim(convert(char,@dNextDay, 'DAY')) in ('SATURDAY','SUNDAY')) Begin
      SET @dNextDay = @dNextDay + 1;
    End;
    SET @dNextDay = @dNextDay + 1;

  Fetch i INTO;
  End;
  Close i;
  Deallocate i;
  RETURN @dNextDay - 1;
  End 

我在转换这一行时遇到问题：Declare i CURSOR for 1..nDaysAfter Loop 它在数字 1 下突出显示。（nDaysAfter 被声明为 Float） 谢谢，我将不胜感激。

Answer 1

我会用 WHILE 循环替换 SQL 服务器代码中的光标。

declare @i int = 1
while @i <= nDaysAfter
begin
    while (dbo.IsHoliday(@dNextDay) = 1) or (RTrim(convert(char,@dNextDay, 'DAY')) in ('SATURDAY','SUNDAY')) 
    Begin
      SET @dNextDay = @dNextDay + 1;
    End
      SET @dNextDay = @dNextDay + 1;

  set @i = @i+1
End

  RETURN @dNextDay - 1;