You can just run a
grep on the result of the DBI
tables method.
Besides being fast, it is also portable, since it is not MySQL specific.
The core instruction you need is
print "table exists" if grep {"tablename" eq $_ } $dbh->tables;
Below, there is a complete example.
#!/usr/bin/perl -w
use DBI;
use strict;
my $dbh = DBI->connect("DBI:mysql:mysql;host=localhost",
"username","password", {RaiseError => 1})
or die "can't connect\n";
#
# Checks for a table in a given database
#
sub table_exists {
my ($dbh, $table) = @_;
return grep {$table eq $_} $dbh->tables
}
my $mytable = "user";
if (table_exists($dbh,$mytable)) {
print "table $mytable exists";
}
else {
print "table $mytable does not exist";
}
$dbh->disconnect();
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: |
| & | | & |
| < | | < |
| > | | > |
| [ | | [ |
| ] | | ] |
Link using PerlMonks shortcuts! What shortcuts can I use for linking?
See Writeup Formatting Tips and other pages linked from there for more info.