Brothers,
I can't see why if I prepare a query outside of a loop and
then execute the statement handle within the loop I get the following
error 
DBD::ODBC::st execute failed: [iODBC][Driver Manager]Invalid cursor st
+ate (SQL-24000)(DBD: st_execute/SQLExecute err=-1) at ./addstuname.pl
+ line 21, <INPUT> chunk 2014.
[iODBC][Driver Manager]Invalid cursor state (SQL-24000)(DBD: st_execut
+e/SQLExecute err=-1) at ./addstuname.pl line 21, <INPUT> chunk 2014.

[download]
If I prepare the statement inside the loop all is fine
Here is the code. 
#!/usr/bin/perl

#use strict;
use DBI;

my $dbh = DBI->connect('dbi:ODBC:MY_DB')
                    or die (DBI->errstr());
open INPUT, '/tmp/records.asc';
my $query = qq(select b from c where a = ?);
#
# Preparing here causes an error!
#
#my $sth = $dbh->prepare($query)
#                    or die ($dbh->errstr());
while (my $rec = <INPUT>)
{
    chomp($rec);
    my @items = split(',', $rec);
    my $a = $items[6];
    $a =~ s/#//;
    if ($items[7] eq '')
    {
# If I prepare each time it works!
#
        my $sth = $dbh->prepare($query)
                    or die ($dbh->errstr());
        $sth->execute($a)
                    or die ($dbh->errstr());
        my $b = $sth->fetchrow_array();
        print qq(Name:$b missing\n);
    }
}

[download]
Any ideas would be most welcome.

In reply to DBI (Prepare once execute many fails) by ColtsFoot

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