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From:Dan Greene Date:December 11 2003 2:17pm
Subject:RE: How to READ/WRITE directly on MyISAM data files ?
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So if I follow you, you allow your clients to execute direct sql on the database, both
select and update, but _they_ simply don't want to see the row id data?

If that's the case, then too bad for them.... if they are capable of writing sql, then
they have to handle the result, or omit the field from the query.  The only other option
is for you to truss up your application interface, so that you give them an interface
that shows just the fields _you_ want them to see.  They can't have their cake and eat it
too.



> -----Original Message-----
> From: Stéphane Bischoff [mailto:Stephane.Bischoff@stripped]
> Sent: Thursday, December 11, 2003 9:00 AM
> To: 'Jay Blanchard'; MySQL (E-mail)
> Subject: RE: How to READ/WRITE directly on MyISAM data files ?
> 
> 
> 
> Hello,
> 
> Here's an example :
> 
> 
> I have a table named Product.
> 
> TABLE : PRODUCT
> +-------------+-------------+-------------+-------------+-----
> --------+
> |    RowID	  |     Name    |  Company    |     Price   |   
> Warranty  |
> 
> |             |             |             |             |     
>         |
> +-------------+-------------+-------------+-------------+-----
> --------+
> |	1	  |   PC 1000   |  MyCom Inc. |  1000.00    |   
> 1 year    |
> 
> |	2	  |   PC 1000   |  MyCom Inc. |  1200.00    |   
> 2 year    |
> 
> |	3	  |   PC 1000   |  MyCom Inc. |  1300.00    |   
> 3 year    |
> 
> |	4	  |   PC 2000   |  MyCom Inc. |  1200.00    |   
> 1 year    |
> 
> |	4	  |   PC 2000   |  MyCom Inc. |  1300.00    |   
> 2 year    |
> 
> |	4	  |   PC 2000   |  MyCom Inc. |  1400.00    |   
> 3 year    |
> 
> |	4	  |   PC 3000   |  MyCom Inc. |  1500.00    |   
> 1 year    |
> 
> |	4	  |   PC 3000   |  MyCom Inc. |  1600.00    |   
> 2 year    |
> 
> |	4	  |   PC 3000   |  MyCom Inc. |  1700.00    |   
> 3 year    |
> 
> |	4	  |   PC AR3    |  SPCom Inc. |  1200.00    |   
> 2 year    |
> 
> |	4	  |   PC AR3    |  SPCom Inc. |  1300.00    |   
> 3 year    |
> 
> |	4	  |   PC AR4    |  SPCom Inc. |  1400.00    |   
> 4 year    |
> 
> +-------------+-------------+-------------+-------------+-----
> --------+
> 
> From My Server Side Application (C code)
> 
> I can Update my Rows using my RowID.
> 
> Example : "UPDATE TABLE product SET Price="2000.00" WHERE RowID="3"";
> 
> 
> But For My Client Side Applications :
> 
> User logs in my Client app.
> User types in "SELECT * FROM product".
> User does NOT WANT TO SEE RowID numbers.
> User wants to see this output :
> 
> +-------------+-------------+-------------+-------------+
> |     Name    |  Company    |     Price   |   Warranty  |	
> |             |             |             |             |
> +-------------+-------------+-------------+-------------+
> |   PC 1000   |  MyCom Inc. |  1000.00    |   1 year    |
> |   PC 1000   |  MyCom Inc. |  1200.00    |   2 year    |	
> |   PC 1000   |  MyCom Inc. |  1300.00    |   3 year    |	
> |   PC 2000   |  MyCom Inc. |  1200.00    |   1 year    |	
> |   PC 2000   |  MyCom Inc. |  1300.00    |   2 year    |	
> |   PC 2000   |  MyCom Inc. |  1400.00    |   3 year    |	
> |   PC 3000   |  MyCom Inc. |  1500.00    |   1 year    |	
> |   PC 3000   |  MyCom Inc. |  1600.00    |   2 year    |	
> |   PC 3000   |  MyCom Inc. |  1700.00    |   3 year    |	
> |   PC AR3    |  SPCom Inc. |  1200.00    |   2 year    |	
> |   PC AR3    |  SPCom Inc. |  1300.00    |   3 year    |	
> |   PC AR4    |  SPCom Inc. |  1400.00    |   4 year    |	
> +-------------+-------------+-------------+-------------+
> 
> I know there are ways to bypass this problem, but it involves 
> much more
> coding in my Delphi applications
> on my Client side.
> 
> So my question is, Is there a way to hide a field from select 
> statements.
> 
> Of course, if my user wrote "SELECT RowId, Name, Company, 
> Price, Warranty
> FROM product"
> he would get the RowId in his query output.
> 
> Best Regards,
> 
> Stéphane.
> 
> 
>  
> 
> 
> -----Original Message-----
> From: Jay Blanchard [mailto:jay.blanchard@stripped]
> Sent: 11 décembre, 2003 08:49
> To: Stéphane Bischoff; MySQL (E-mail)
> Subject: RE: How to READ/WRITE directly on MyISAM data files ?
> 
> 
> [snip]
> Thank you, but I already know the basics of SQL SELECT statements.
> 
> What I am trying to say is, if a User writes a SELECT clause, 
> I do not want
> him to
> see the RowID field. I do not want him to write a long SELECT 
> statement,
> especially if my
> table has 20 FIELDS or more. (Can you imagine the user 
> writing these queries
> all the time).
> 
> I want him to be able to write SELECT * FROM ATABLE.
> [/snip]
> 
> Well, that pretty much misses the point then, doesn't it? Are 
> your records
> not unique? There is no way that you can write an update 
> statement that
> would perform the operation on the proper record? Can you 
> show us a bit of
> the table? With more information we can help.
> 
> -- 
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> 
Thread
How to READ/WRITE directly on MyISAM data files ?Stéphane Bischoff11 Dec
  • Re: How to READ/WRITE directly on MyISAM data files ?Martijn Tonies11 Dec
  • Re: How to READ/WRITE directly on MyISAM data files ?Stephen Brownlow12 Dec
RE: How to READ/WRITE directly on MyISAM data files ?Stéphane Bischoff11 Dec
  • Re: How to READ/WRITE directly on MyISAM data files ?Martijn Tonies11 Dec
RE: How to READ/WRITE directly on MyISAM data files ?Jay Blanchard11 Dec
RE: How to READ/WRITE directly on MyISAM data files ?Stéphane Bischoff11 Dec
RE: How to READ/WRITE directly on MyISAM data files ?Jay Blanchard11 Dec
RE: How to READ/WRITE directly on MyISAM data files ?Dan Greene11 Dec
RE: How to READ/WRITE directly on MyISAM data files ?Stéphane Bischoff11 Dec
  • Re: How to READ/WRITE directly on MyISAM data files ?Martijn Tonies11 Dec
  • RE: How to READ/WRITE directly on MyISAM data files ?Matt Griffin11 Dec
RE: How to READ/WRITE directly on MyISAM data files ?Jay Blanchard11 Dec
RE: How to READ/WRITE directly on MyISAM data files ?Stéphane Bischoff11 Dec
RE: How to READ/WRITE directly on MyISAM data files ?Dan Greene11 Dec