我需要能够通过DBI发出“create trigger”的命令,但是我似乎无法使分隔符命令起作用。有人能找到一种方法使其正常工作吗?
代码:
use strict;
use DBI;
my $dbargs = {mysql_auto_reconnect => 1,
AutoCommit => 0,
RaiseError => 1,
ShowErrorStatement => 1};
my $dsn = "DBI:mysql:database=xdisp;host=cycldev06";
my $dbh = DBI->connect( $dsn, 'sqluser', '', $dbargs);
my $sql = qq{
DELIMITER //
CREATE TRIGGER `hardware_last_status` BEFORE UPDATE
ON `hardware` FOR EACH ROW BEGIN
IF NEW.status != OLD.status AND NEW.last_status = OLD.last_status THEN
SET NEW.last_status = OLD.status;
END IF;
END
//
};
$dbh->do($sql);
结果:
DBD::mysql::db do failed: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'DELIMITER //
CREATE TRIGGER `hardware_last_status` BEFORE UPDATE
' at line 1 at test.pl line 24.
并且该SQL在MySQL命令行中运行良好。