While Loop 未在 SQL Server 的存储过程中完成其执行

Question

我正在编写一个存储过程，它接受两个输入，例如 startingNumber=A00001 和 EndingNumber=A00049，它应该生成如下数字并插入到表中：

A00001
A00002
A00003
A00004
.
.
.
A00049

但是存储过程没有按预期工作，它继续执行并且没有完成。谁能帮我弄清楚哪里出了问题以及如何解决它。这是做这些事情的适当方法吗？如果有人能给我一些其他替代解决方案，我会更高兴。 这是我编写的存储过程：

CREATE PROCEDURE [dbo].[spInsertNumbers]
@StartingNumber nvarchar(25),
@EndingNumber nvarchar(25)
AS
Declare @StartIndex int 
Declare @EndIndex int 
Declare @Series varchar(5) 
Declare @StartNumber int 
Declare @EndNumber int
Declare @No nvarchar(25)
Declare @StartCounter int
Declare @EndCounter int
Declare @Number varchar(15)

--Getting the letter
set @Series = substring(@StartingNumber, 1, 1)

--Getting the starting index of the starting and ending Number
set @StartIndex = patindex('%[1-9]%', @StartingNumber)
set @EndIndex = patindex('%[1-9]%', @EndingNumber)

--Getting the starting and ending number
set @StartNumber = substring(@StartingNumber, @StartIndex, 6)
set @EndNumber = substring(@EndingNumber, @EndIndex, 6)

--Converting number string to integer
set @StartCounter = Convert(int, @StartNumber)
set @EndCounter = Convert(int, @EndNumber)

while (@StartCounter <= @EndCounter)

   set @Number = CONVERT(varchar, @StartCounter)

   if @StartCounter >= 1 and @StartCounter < 10
      set @No = @Series + '0000' + @Number

   if @StartCounter >= 10 and @StartCounter < 100
      set @No= @Series + '000' + @Number

   if @StartCounter >= 100 and @StartCounter < 1000
      set @No= @Series + '00' + @Number

   if @StartCounter >= 1000 and @StartCounter < 10000
      set @No= @Series + '0' + @Number

   if @StartCounter >= 10000 and @StartCounter < 100000
      set @No= @Series + @Number

BEGIN
   Insert into TestingNumber(Number)
   Values(@No);

   set @StartCounter = @StartCounter + 1
END

Answer 1

你应该在while之后写BEGIN。否则，它会在您的过程中产生无限循环。

CREATE PROCEDURE [dbo].[spInsertNumbers] 
@StartingNumber nvarchar(25),
@EndingNumber nvarchar(25)
AS
Declare @StartIndex int 
Declare @EndIndex int 
Declare @Series varchar(5) 
Declare @StartNumber int 
Declare @EndNumber int
Declare @No nvarchar(25)
Declare @StartCounter int
Declare @EndCounter int
Declare @Number varchar(15)

--Getting the letter
set @Series = substring(@StartingNumber, 1, 1)

--Getting the starting index of the starting and ending Number
set @StartIndex = patindex('%[1-9]%', @StartingNumber)
set @EndIndex = patindex('%[1-9]%', @EndingNumber)

--Getting the starting and ending number
set @StartNumber = substring(@StartingNumber, @StartIndex, 6)
set @EndNumber = substring(@EndingNumber, @EndIndex, 6)

--Converting number string to integer
set @StartCounter = Convert(int, @StartNumber)
set @EndCounter = Convert(int, @EndNumber)

while (@StartCounter <= @EndCounter)
BEGIN
   set @Number = CONVERT(varchar, @StartCounter)

   if @StartCounter >= 1 and @StartCounter < 10
      set @No = @Series + '0000' + @Number

   if @StartCounter >= 10 and @StartCounter < 100
      set @No= @Series + '000' + @Number

   if @StartCounter >= 100 and @StartCounter < 1000
      set @No= @Series + '00' + @Number

   if @StartCounter >= 1000 and @StartCounter < 10000
      set @No= @Series + '0' + @Number

   if @StartCounter >= 10000 and @StartCounter < 100000
      set @No= @Series + @Number


   Insert into TestingNumber(Number)
   Values(@No);

   set @StartCounter = @StartCounter + 1
END