Solved

TQuery and SQL String

Posted on 1998-12-01
2
160 Views
Last Modified: 2010-05-18
I'm using this query:

QueryTest.SQL.Add('Select * from TEST where Name = "' + TableNames['NAME'] + '"');

Ok. this works fine until the query reaches someone with the name "abcdf".

So what's happens is that the string looks like :
Select * from TEST where Name = ""abcd"" !!!

I also tried this :
QueryTest.SQL.Add('Select * from TEST where Name = ''' + TableNames['NAME'] + '''');

Replacing the " with ' works but when now someone has a name with '''' in it, the same problem occurs.

Is there a solution to my problem??

0
Comment
Question by:rick_mulder
2 Comments
 
LVL 27

Expert Comment

by:kretzschmar
ID: 1348757
hi rick_mulder

try

QueryTest.SQL.Add('Select * from TEST where Name = ' + quotedStr(TableNames['NAME'])');

meikl
0
 
LVL 3

Accepted Solution

by:
williams2 earned 50 total points
ID: 1348758
You should NOT begin to but extra quotes around the string, instead you should replace quotes ' with two quotes ''. It sounds a bit silly, but try it, it works ..also with multiple quotes '''' .

This should look like this

Username:= 'D''abo'; //This is the Delphi way to handle quotes and has nothing to do with the SQL-Statement.

var
  S,Username: String;
  i: Integer;
Begin
  S:= '';
  For i:= 1 to length(Username) do
  Begin
    S:= S+Username[i];
    if Username[i]='''' then S:= S + '''';
  End;

  QueryTest.SQL.Add('Select * from TEST where Name = '+QuotedStr(S)+');
End;

This works fine to me!
0

Featured Post

Gigs: Get Your Project Delivered by an Expert

Select from freelancers specializing in everything from database administration to programming, who have proven themselves as experts in their field. Hire the best, collaborate easily, pay securely and get projects done right.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

Title # Comments Views Activity
Simple Delphi Question 9 89
Delphi Yen format 3 33
SUM 2 INTEGER ARRAYS INTO 1 10 100
update joined tables 2 45
Introduction The parallel port is a very commonly known port, it was widely used to connect a printer to the PC, if you look at the back of your computer, for those who don't have newer computers, there will be a port with 25 pins and a small print…
Hello everybody This Article will show you how to validate number with TEdit control, What's the TEdit control? TEdit is a standard Windows edit control on a form, it allows to user to write, read and copy/paste single line of text. Usua…
This Micro Tutorial will teach you how to censor certain areas of your screen. The example in this video will show a little boy's face being blurred. This will be demonstrated using Adobe Premiere Pro CS6.
Along with being a a promotional video for my three-day Annielytics Dashboard Seminor, this Micro Tutorial is an intro to Google Analytics API data.

776 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question