Question

我通过将字符字母向下移动一个由键给出的槽数来加密表名和列名。例如，当key = 3时，“A”变为“D”，“z”变为“c”，“1”变为“4”。

以下是我加载数据的代码：

USE testdata
GO
CREATE testtable
    (TREATMENT CHAR(20),
     PRICE INT)
GO

BULK INSERT testtable
FROM 'c:\testdata.txt'
WITH
(
    FIELDTERMINATOR = ',',
    ROWTERMINATOR = '\n'
)
GO

SELECT * 
FROM testtable
GO

我怎么能这样做？我需要动态sql吗？

谢谢！

Answer 1

我已经编写了一个修改字符串的过程，但不确定如何在列名

上使用它

create procedure encrypt 
  @ptext as varchar(500)
as 
begin
set nocount on
declare @key as tinyint = 3
declare @etext as varchar(500) = ‘ ’
declare @pc as varchar(1)
declare @i as smallint = 1
declare @n as smallint

set @n = len(@ptext)

while @i <= @n
begin 
set @pc = substring (@ptext, @i, 1)

if ascii(@pc) between 48 and 57 
begin
    if ascii(@pc) + @key < 58
        set @pc = char((ascii(@pc) + @key))
    else 
        set @pc = char((ascii(@pc) + @key)-10)
end

else if ascii(@pc) between 65 and 90 
begin
    if ascii(@pc) + @key < 91
        set @pc = char((ascii(@pc) + @key))
    else 
        set @pc = char((ascii(@pc) + @key)-26)
end

if ascii(@pc) between 97 and 122 
begin
    if ascii(@pc) + @key < 123
        set @pc = char((ascii(@pc) + @key))
    else 
        set @pc = char((ascii(@pc) + @key)-26)
end

set @etext = @etext + @pc
set @i = @i + 1
end
select @etext
end

如何根据sql server中的旧名称编辑列名和表名？

1 个答案: