Hello,
I looked for a while at you code. I can't see why it fails
but I have a few remarks:
1. Why do you use get_table and parse the result instead
of simply doing a query like
select Title from movies where Title = 'NewTitle'
and check if you get an empty result set?
2. Did you try to check the result error-codes from the various
sqlite functions?
3. The strcpy (movie, result1[i]); might overwrite your stack
in case the result string exceeds your max_len.
Maybe an error entry in the DB?
4. Are you sure to run the loop including the ncols: ?
for (int i=0; i<nrows+1; i++)
hope this helps
Marcus
>
> Ok, this problem has me both very puzzled and frustrated. I'm running
> sqlite3 version 3.6.10 under SUSE 10.3. The file contains executable code
> that both works and fails depending upon the number of records in the
> database.
>
> The movie database currently has 525 DVDs in it. Most of the movies were
> manually added directly into sqlite3 ("insert into movies (Title,
> Category,
> TV) values ("","","")" as I was still working on the program. For the
> program, I was using the same database but with only a few test records.
>
> Once I got the program working (or so I thought), I copied the complete
> database from my Nokia N810 to my development directory. I then added
> another movie just to make sure everything was operating correctly. Well,
> it didn't work and I was stumped. Here's what the program does and what
> occurs with a large database:
>
> First, the program displays all the categories that a movie can be in. I
> enter a category, such as SciFi. I then enter the title of the movie,
> such
> as "X-Men". The program then goes through all the titles in the database
> looking to see if there's a match. If there is, I'm told the movie
> already
> exists and it exits. If the movie doesn't exist, I'm asked if the movie
> was
> recorded from TV. After that, all is written to the database. That's
> what
> happens with a small number of records and what SHOULD happen, but
> doesn't,
> when there are a large number of records.
>
> As you can see from the code, I enter the movie title into a variable
> called
> "movie_title". Each title (stored under variable "movie") in the database
> is compared to "movie_title". In a small database, e.g. with less than
> 200
> records (I don't know exactly how many) all works as it should. However,
> at
> some point, the CONTENTS of movie_title changes. At some point, the
> contents of movie_title starts changing almost as quickly as "result1[i]"
> changes. What gets input into the database is whatever is in movie_title
> at
> the time. In checking all three variables (movie_title, category, tv),
> only
> movie_title changes. The other two remain correct.
>
> I've removed the rest of the program as well as anything that doesn't
> pertain specifically to this problem to make it easier to review.
>
> Any ideas or help will be greatly appreciated! As I stated in the
> beginning, I'm puzzled and frustrated...
> And thanks, in advance!
>
> Nick.
>
>
> http://www.nabble.com/file/p22137080/test.cpp test.cpp
> --
> View this message in context:
> http://www.nabble.com/Problem-with-Inserting-Records-into-Large-Database-tp22137080p22137080.html
> Sent from the SQLite mailing list archive at Nabble.com.
>
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