You should really consider removing "select * from" and replacing it with a "select" that specifically states what fields it's selecting and in which order. The same applies to "insert into table". This way your code will continue working even if table layout is altered. Since you're doing a "describe" already, it's easy enough to pull field names from it. Once you have the names, do a proper "select" and also store field names in the file that you're exporting, perhaps on the very first line, so that the application on the other end will know how to construct the "insert". Getting the right number of "?" for placeholders is also trivial in this case.

--perlplexer

In reply to Re: Understanding placeholders by perlplexer
in thread Understanding placeholders by Anonymous Monk

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":


  • 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:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.