kyle is right that selectcol_arrayref() is a method of the database handle ($dbh), not of the statement handle ($sth). Here's one way to remember which DBI object the various methods belong to : database handle methods take data out of the database in a single step whereas statement handle methods require multiple steps - prepare, execute, fetch.
Another way to tell is by the error message: Can't locate object method "selectcol_arrayref" via package "DBI::st". That message says it can't find that method in that package, in other words, that object has no such method. Either you misspelled method name, or you are using it on the wrong object.
Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
Read Where should I post X? if you're not absolutely sure you're posting in the right place.
Please read these before you post! —
Posts may use any of the Perl Monks Approved HTML tags:
- a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
| |
For: |
|
Use: |
| & | | & |
| < | | < |
| > | | > |
| [ | | [ |
| ] | | ] |
Link using PerlMonks shortcuts! What shortcuts can I use for linking?
See Writeup Formatting Tips and other pages linked from there for more info.