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Lowercase index from EXPLAIN (unless it's PRIMARY) to match lowercase ident names from TableParser::parser().

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This commit is contained in:
Daniel Nichter
2012-05-08 16:51:35 -06:00
parent 9bb2311fc2
commit 884d02bc2a
3 changed files with 23 additions and 5 deletions
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10
lib/NibbleIterator.pm
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@@ -574,7 +574,15 @@ sub get_row_estimate {
PTDEBUG && _d($sql);
my $expl = $cxn->dbh()->selectrow_hashref($sql);
PTDEBUG && _d(Dumper($expl));
return ($expl->{rows} || 0), $expl->{key};
# MySQL's chosen index must be lowercase because TableParser::parse()
# lowercases all idents (search in that module for \L) except for
# the PRIMARY KEY which it leaves uppercase.
# https://bugs.launchpad.net/percona-toolkit/+bug/995274
my $mysql_index = $expl->{key} || '';
if ( $mysql_index ne 'PRIMARY' ) {
$mysql_index = lc($mysql_index);
}
return ($expl->{rows} || 0), $mysql_index;
}
sub _prepare_sths {