I'm trying to store binary data that contains NUL ("\x00") characters into a BLOB column of a SQLite 3 database. SQLite documentation says that BLOB's can contain NUL characters, but I get the data truncated at first ocurrence of NUL. I'm missing something? Should I always encode the data before the insert? Or this is a bug of DBD::SQLite?
Thanks in advance,
José

The following code outputs just "ABC" (using DBD::SQLite 3.08):
use DBI; my $dbh = DBI->connect('DBI:SQLite:dbname=test_blob.db', '', ''); $dbh->do('CREATE TABLE test_blob( Bindata BLOB )'); my $bindata = "ABC" . "\x00" . "DEF"; my $sth1 = $dbh->prepare('INSERT INTO test_blob VALUES(?)' ); $sth1->execute($bindata); my $sth2 = $dbh->prepare('SELECT Bindata FROM test_blob'); $sth2->execute(); my $row = $sth2->fetch(); my $fetched_data = $row->[0]; $sth2->finish(); $dbh->disconnect; print $fetched_data;
Update: A known workaround is to use bind_param() to force data type as SQL_BLOB. For example:
use DBI qw(SQL_BLOB); # ... $sth = $dbh->prepare('INSERT INTO test_blob VALUES(?)' ); $sth->bind_param(1, $bindata, SQL_BLOB ); $sth->execute();

In reply to How to store NUL characters into SQLite BLOB ? by dont_you

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