Suppose I execute the statement
假设我执行了该语句
$sql = "UPDATE `table1` SET v1 = 'v1' WHERE id = 'aaa';";
$sql .= "UPDATE `table2` SET v1 = 'v1' WHERE id = 'aaa';";
$code = $dbh->exec($sql);
$
阅读背景：
PDO：由多个SQL语句一起执行的单个结果
来源：互联网
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