for the second question, use the SQL 'BETWEEN' operator: 
  SELECT * FROM yourtable WHERE datcol BETWEEN '2005-01-25' AND '2005-
+07-31'

[download]
As for the primary question, look at the docs for Win32::ODBC. The ->Sql( SQL_STRING ) method Executes the SQL command SQL_STRING on the current connection. Returns ? on success, or an error number on failure. To get the data, you'll need to use the FetchRow method. This should help to get started and to see the structure returned: 
my $rc = $DB->sql("SELECT SUM(Size_Byte) FROM Files_U WHERE Type ='doc
+'");
die "ERROR: $rc" if $rc;
use Data::Dumper;
while( my $row = $DB->FetchRow ){
  warn Dumper $row;
}

[download]

In reply to Re: SQL to obtain total SUM of a column and all entries between 2 dates by davidrw
in thread SQL to obtain total SUM of a column and all entries between 2 dates by blackadder

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.