To expand a bit on
perrin's reply, seek into the DBI docs for the section titled "Database Handle Methods", and probe down there quite a ways to find "table_info", "column_info" and the next few methods after that. If it seems kind of complicated, or if you're concerned by the opening statement in that part of the docs:
Warning: This method is experimental and may change.
don't worry -- there's a reasonable alternative using a query to oracle's own "data dictionary" tables. Here's a query that I've used to get something pretty similar to the output of "describe" -- just do your normal "prepare, execute, fetch_row" sequence using this query, and the results will be the list of columns and some of their attributes:
my $sql = "select column_name, data_type, data_length, nullable from a
+ll_tab_columns where table_name = ?";
(Just have a scalar variable that holds the table name in ALL_CAPS, and provide that variable when you "execute" the prepared statement.) That query might not tell you everything you want to know about the definitions of the columns -- in which case, just consult a good oracle book about how to query for the attributes you want.
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.