Question

我想要结合这两个查询。我已经做了一些没有成功的证据，显然我错误地用正确的模式命令单词

$qryString="INSERT INTO votation (userID, voto, messageID) VALUES (:user, :voto, :mID) 
ON DUPLICATE KEY UPDATE voto = :voto"; 

$qryString="SELECT AVG(voto) AS average_valutation FROM votation WHERE messageID=:mID";

Hove将这两个查询统一在一起？

Answer 1

这没有帮助吗？

$qryString="INSERT INTO votation (userID, voto, messageID) VALUES (:user, :voto, :mID) 
            ON DUPLICATE KEY UPDATE voto = :voto ;"; 
                                                 ^----note this to separate from second query.

$qryString .="SELECT AVG(voto) AS average_valutation FROM votation WHERE messageID=:mID";
           ^---note this point.

Answer 2

取决于您使用的PHP mysql库，试试这个：

$results = array();
$qryString="
   INSERT INTO votation (userID, voto, messageID) VALUES (:user, :voto, :mID) 
   ON DUPLICATE KEY UPDATE voto = :voto;
   SELECT AVG(voto) AS average_valutation FROM votation WHERE messageID=:mID;
"; 
$mysqli->multi_query($qryString)
do {
    if ($res = $mysqli->store_result()) {
        $results[] = $res->fetch_all(MYSQLI_ASSOC);
        $res->free();
    }
} while ($mysqli->more_results() && $mysqli->next_result());

http://php.net/manual/de/mysqli.multi-query.php

（已弃用的）mysql_函数中未实现多个查询。我不确定PDO。

INSERT ... ON DUPLICATE KEY和SELECT在同一查询中

2 个答案: