in reply to Re: Test for number or string
in thread Test for number or string

This is exactly the problem placeholders are intended to solve. With placeholders, you just mark where you want to insert data into your SQL statement and the database interface layers take care of passing that data to the database where it belongs. I always use placeholders and have never had to worry about quoting.

Look in the Tutorials section. There are plenty of tutorials that explain how to use DBI with placeholders.

Also, you'll get faster and more accurate answers to your questions if you give all the details you can up front instead of being miserly with information about what you are really trying to do.

90% of every Perl application is already written.

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Re: Re: Re: Test for number or string
by nedals (Deacon) on May 03, 2003 at 00:55 UTC
    Too true :)
    I guess I thought there would be a simple answer to the original question.

    Let me make sure I understand what you are saying.

    I can easily download my data with no quotes in the form...


    Now I upload this same data using something like this...
    my $sql = "INSERT INTO tablename VALUES(?)"; my $sth = $dbh->prepare($sql); foreach my $record (@filedata) { $sth->execute($record); }
    ... and I don't have to worry about quotes, etc.?
      Exactly that is the case. Even if you insist on quoting yourself though, you should know which columns expect numbers and which expect strings, so you don't need to examine the value either way.

      Makeshifts last the longest.