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Log the Sql of TAdoQuery

Posted on 2007-04-02
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Last Modified: 2010-04-05
Hi there :-)

I got a TAdoQuery and I want to log the sql statement's that it process's.
However I also work with paramaters, like
SELECT * FROM this WHERE that=:S1

So is there a way to get the fully formed sql statement? And not just
SELECT * FROM this WHERE that=:S1
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Question by:wildzero
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5 Comments
 
LVL 21

Expert Comment

by:ziolko
ID: 18838932
if you want to log your sql statements simplest way is any time you
call ADOQuery.SQL.Add(sql_stat) add sql_stat also to some stringlist
then you can save your stringlist to file or dump to clipboard or anythink you want.
saving params might be possible (not tested) in this way
ADOQuery.SQL.Add(sql_stat)
mystringlist.add(ADOQuery.SQL.Text)
but there's little trick for example if param is blob you might have problems
with saving param value.

ziolko.
0
 
LVL 10

Author Comment

by:wildzero
ID: 18839085
Probly have to write my own function then to get the params.....

saving the
SELECT * FROM this WHERE that=:S1
isn't a problem - thats easy to log.
But when I do log it, I want the params included....

0
 
LVL 21

Accepted Solution

by:
ziolko earned 500 total points
ID: 18839153
you can loop thru Params collection read values, convert them to string and then use StringReplace() on sql command

not tested sample:
procedure TForm1.Button1Click(Sender: TObject);
var prm: string;
    sql: string;
    sql_noparams: string;
begin
  ADOQuery1.SQL.Add(sql);
  sql_noparams := sql;
  for cnt := 0 to ADOQuery1.Parameters.Count - 1 do begin
    prm := VarToStr(ADOQuery1.Parameters[cnt].Value);
    sql_noparams := StringReplace(sql_noparams, ADOQuery1.Parameters[cnt].Name, prm, [rfReplaceAll, rfIgnoreCase]);
  end;
end;


ziolko.
0
 
LVL 21

Expert Comment

by:ziolko
ID: 18839191
of course (missed ':'):

sql_noparams := StringReplace(sql_noparams, ':' + ADOQuery1.Parameters[cnt].Name, prm, [rfReplaceAll, rfIgnoreCase]);

ziolko.
0
 
LVL 10

Author Comment

by:wildzero
ID: 18839740
Yea that might be the way to do it...
Will stick that in and see how it runs.
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