sql-server-2008-r2 - 从sql中的列中删除前导零

Question

如何从中删除前导零

number        RESULT WOULD BE LIKE THIS
00000.9         .9
A0001.1         A1.1
G0101.3         G101.3
00808.8         808.8
J0000.5         J.5

Answer 1

更改函数编号（@NUMBER VARCHAR(7)）

返回 VARCHAR(7) 为

开始

声明 @NUM VARCHAR(1)

声明@NUM1 VARCHAR(7)

SET @NUM= SUBSTRING(@NUMBER,1,1)

IF(@NUM LIKE '[AZ%]')

   BEGIN
       SET @NUM1=@NUM+''+CAST(CONVERT(FLOAT,SUBSTRING(@NUMBER,2,7),2)AS VARCHAR(7))
   END

别的

  BEGIN
       SET @NUM1=LTRIM(STR(cast(@NUMBER as float),case when len(cast(@NUMBER as float))          > 7 then 7 else len(cast(@NUMBER as float)) end,1))
  END     

返回@NUM 结束

Answer 2

declare @input varchar(10);
declare @output varchar(10);
set @input = '00000.9';
while ((ISNUMERIC(substring(@input,1,1)) = 0)  or (substring(@input,1,1) = '0'))   
  begin
    if substring(@input,1,1) = '0'
      begin
      set @input = substring(@input,2,len(@input) )
      end
    else
      if  ISNUMERIC(substring(@input,1,1)) = 0
        begin
          set @output = substring(@input,1,1); 
          set @input = substring(@input,2,len(@input))
        end

end
  if LEN(@output) > 0 
    set @input =  @output + @input
select @input

@input 是你的输入