Hi monks, I have a small problem with a regex. I'm trying to pull headers out of a select clause in a sql statement. Everything was going fine until I threw myself a loop.
$sql = qq| select 'First' = first_name, 'Last' = last_name from table |; # I pull the info from the select clause like this... $sql =~ /select(.*?)from/i; # Then split on comma. @select = split (/,/, $1);
Here is my problem. I want to then split out the First and Last as headers in an array. The above example is simple as splitting on the comma. But when I get to examples like this...
$sql = qq| select 'First' = coalesce(first_name, ''), 'Last' = coalesce(last_name, '') from table |;
As you probably noticed, the comma inside the coalesce will mess with my split. So, I guess what I want to do is split on the commas, as long as they are not contained inside a set of parenthesis. I am lost on how to accomplish this with a regex. Any help would be greatly appreciated.
Thanks.

In reply to Pull info from select clause. by the_0ne

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.