Hi aplonis,

It's possible to call sqlite3 via system. However, I would strongly recommend that you do all of your SELECTing via DBI, because otherwise you're left parsing the output of the CLI tool. However, I have in the past done something similar to the following, you could change this to .read:

system('sqlite3', $DB_FILE, '.dump')==0
    or die "sqlite3 failed, \$?=$?";

[download]

Update: Added the first sentence above; also I found this in the DBD::SQLite docs:

Processing Multiple Statements At A Time

DBI's statement handle is not supposed to process multiple statements at a time. So if you pass a string that contains multiple statements (a dump) to a statement handle (via prepare or do), DBD::SQLite only processes the first statement, and discards the rest.

If you need to process multiple statements at a time, set a sqlite_allow_multiple_statements attribute of a database handle to true when you connect to a database, and do method takes care of the rest (since 1.30_01, and without creating DBI's statement handles internally since 1.47_01). If you do need to use prepare or prepare_cached (which I don't recommend in this case, because typically there's no placeholder nor reusable part in a dump), you can look at $sth->{sqlite_unprepared_statements} to retrieve what's left, though it usually contains nothing but white spaces.

Hope this helps,
-- Hauke D

In reply to Re: DBI and SQLite's .read feature (updated) by haukex
in thread DBI and SQLite's .read feature by aplonis

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.