Question

我发现使用与pdo相同的有趣行为。我检查了phpmyadmin和pdo中的几个select语句，结果各不相同。有人有什么想法吗？

$sql = "select * from fenster where fenster > 'news'";  //works ok
$sql = "select * from fenster where fenster < 'news'";  //works ok
$sql = "select * from fenster where fenster <= 'news'";  //works ok

$sql = "select * from fenster where fenster >= 'news'";  // news is not in result
$sql = "select * from fenster where fenster = 'news'";   // news is not in result

$stmt = $db->prepare($sql); 
$stmt->execute();

$ feldName = array_keys（$ stmt-＆gt; fetch（PDO :: FETCH_ASSOC））;

while($data = $stmt->fetch()) {
    var_dump($data);
}

Answer 1

我自己找到了原因。 $ feldName = array_keys（$ stmt-＆gt; fetch（PDO :: FETCH_ASSOC））;确实读过了丢失的行，所以之后没有显示。所以我必须找到一种解决方法。

select中的equal不能按预期工作

1 个答案: