PDO查询不起作用

Question

I have a set of PDO statements that do not seem to be working. Basically I am trying to update the "waiting" value in 1 table and then select that same row and insert it into another table.

$statement = $db->prepare("UPDATE waiting SET wait = :status WHERE id = :id");
$statement->bindValue(':status', 0);
$statement->bindParam(':id', $id);
$statement->execute();
$statement = $db->prepare("INSERT INTO approved (fname, lname, student_id, email, type) (SELECT fname, lname, student_id, email, type FROM waiting WHERE id = :id)");
$statement->bindParam(':id', $id);
$statement->execute();

I've also tried setting $statement to null before I do the other query but that didn't work either:

$statement = $db->prepare("UPDATE waiting SET wait = :status WHERE id = :id");
$statement->bindValue(':status', 0);
$statement->bindParam(':id', $id);
$statement->execute();
$statement = null;
$statement = $db->prepare("INSERT INTO approved (fname, lname, student_id, email, type) (SELECT fname, lname, student_id, email, type FROM waiting WHERE id = :id)");
$statement->bindParam(':id', $id);
$statement->execute();

Any ideas why this isn't working?

Answer 1

Your insert query is syntactically wrong. Remove the brackets from around the select and it should work:

INSERT INTO approved (fname, lname, student_id, email, type)
SELECT fname, lname, student_id, email, type FROM waiting WHERE id = :id