SQL中的Continue和Break

时间：2022-03-15 01:26

在Sql Server中，sql语句包含While循环的时候，肯定都或多或少的用到Continue和Break...

下面撸了一个小Demo

Declare @Index Int = 0,@EndIndex Int = 0

While  @Index < 100
    Begin
        Set @EndIndex = @EndIndex + 1
        Print ‘Continue 之后Index增加...‘ + Convert(Varchar(1000),@Index)
        If @EndIndex > 100
            Begin
                Print ‘防止死循环...*************************************************‘
                Break
            End
            
        Continue
        Set @Index =@Index + 1
    End

Set @Index = 0

While  @Index < 100
    Begin
        Print ‘Continue 之前Index增加...‘ + Convert(Varchar(1000),@Index)
        Set @Index =@Index + 1
        Continue
    End

Set @Index = 0
While  @Index < 100
    Begin
        Print ‘Break Index...‘ + Convert(Varchar(1000),@Index)
        Break
    End