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Re^2: DBI variable argument count

by anothersmurf (Novice)
on Sep 14, 2012 at 01:39 UTC ( #993612=note: print w/ replies, xml ) Need Help??


in reply to Re: DBI variable argument count
in thread DBI variable argument count

oh my. I don't get it. I think I'm doing this right but I'm obviously not.

$request = "SELECT * FROM nsmw WHERE unit = ? AND name1 REGEXP ? AND e +mail REGEXP ? ORDER BY unit" @values = ("001", "duckman", "google.com"); # Do database transaction my $dbh = DBI->connect("DBI:mysql:database=db;host=localhost", "user", + "user",{'RaiseError' => 1}); my $sth = $dbh->prepare($request); $sth->execute(@values); while (my $ref = $sth->fetchrow_hashref()) { # here is where the magic happens h3("Unit $ref->{'unit'}"); }
There is a matching row in that DB but for some reason it just doesn't print anything in the while loop. :(

I think maybe I'm just too tired. I've been coding for 9 hours without a break =)


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Re^3: DBI variable argument count
by ig (Vicar) on Sep 14, 2012 at 02:50 UTC

    Take a break - it's amazing what a fresh mind can see.

    I'm not familiar with REGEXP, so can't comment on that.

    I would strip down the query then build it back up one argument at a time, to see where the problem is. Do you get some records from the query select * from nsmw? If so, then add your where clauses one at a time. This will, at least, narrow your focus a bit.

    update: a quick look at REGEXP turns up this for MySQL 5.1:

    The REGEXP and RLIKE operators work in byte-wise fashion, so they are not multi-byte safe and may produce unexpected results with multi-byte character sets. In addition, these operators compare characters by their byte values and accented characters may not compare as equal even if a given collation treats them as equal.

    Are your strings plain ASCII or are they multi-byte?

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