有2个SQL查询到相同的PHP数组

Question

我有一个关于SQL查询的问题。

在我使用一个查询之前。 ：

$query= "SELECT hw.name as server, proc.cmd as cmd, proc.pid as pid, proc.ppid as ppid FROM hw,proc WHERE hw.id=proc.hardware_id AND hw.name LIKE :servername ORDER BY hw.name;";
$dbh = new PDO("mysql:host=*****;dbname=*****","*****","*****");
$stmt = $dbh->prepare($query);
$stmt->bindValue(":servername","$servername%");
$stmt->execute();
if ( $stmt->execute() != TRUE ) {
        print "Erreur requete SQL";
        print_r($stmt->errorInfo());
}
$results=$stmt->fetchAll();

现在，我需要使用2个不同的查询，并将它们放入同一数组中：

$results=$stmt->fetchAll();

所以我有想法进行2次查询，然后将它们直接放入相同的$ result中。

$query= "SELECT hw.name as server, proc.cmd as cmd, proc.pid as pid, proc.ppid as ppid FROM hw,proc WHERE hw.id=proc.hardware_id AND hw.name LIKE :servername ORDER BY hw.name;";
$query2= "SELECT hw.name as server, svc.servicename as svc, svc.displayname as svcname FROM hw,svc WHERE hw.id=svc.hardware_id AND hw.name LIKE :servername ORDER BY hw.name;";
$dbh = new PDO("mysql:host=*****;dbname=*****","*****","*****");
$stmt = $dbh->prepare($query,$query2);
$stmt->bindValue(":servername","$servername%");
$stmt->execute();
if ( $stmt->execute() != TRUE ) {
        print "Erreur requete SQL";
        print_r($stmt->errorInfo());
}
$results=$stmt->fetchAll();

为此，我进行了修改： $stmt = $dbh->prepare($query,$query2); 但这是行不通的。

您是否知道如何将2个SQL查询放入同一数组中？

或者，也许如何创建2个数组并与之组合一个？

提前致谢。

Answer 1

您可以使用JOINS在单个查询中实现此目的，而不是使用两个SQL

$query= "SELECT hw.name as server, proc.cmd as cmd, proc.pid as pid, proc.ppid as ppid ,svc.servicename as svc, svc.displayname as svcname
FROM hw
INNER JOIN proc as proc ON proc.hardware_id = hw.id 
INNER JOIN svc on svc ON svc.hardware_id = hw.id

WHERE hw.name LIKE :servername AND hw.name LIKE :servername
ORDER BY hw.name";

Answer 2

最好的方法是通过UNION子句组合两个查询：

SELECT hw.name as server, proc.cmd as cmd, proc.pid as pid, proc.ppid as ppid 
FROM hw,proc WHERE hw.id=proc.hardware_id AND hw.name LIKE :servername
UNION
SELECT hw.name as server, svc.servicename as svc, svc.displayname as svcname 
FROM hw,svc WHERE hw.id=svc.hardware_id AND hw.name LIKE :servername
ORDER BY hw.name;