From the DBI docs.

$hash_ref = $dbh->fetchall_hashref($key_field);

The $key_field parameter provides the name of the field that holds the value to be used for the key for the returned hash.

The $key_field parameter can also be specified as an integer column number (counting from 1). If $key_field doesn't match any column in the statement, as a name first then as a number, then an error is returned.

In reply to Re: DBI error by Abstraction
in thread DBI error by hakkr

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