Question

我想要实现的目的是将所有信息插入到以逗号分隔的行中，而不是为每个数据创建另一列。

我想要这个

john,mark,mary,luke,james

不是这个

john
mark
mary
luke
james

我的代码

// Get all the users
$query = "SELECT SAL.mentor AS mentor, ACC.username AS username ";
$query .= "FROM ec_accounts ACC ";
$query .= "LEFT JOIN ec_info INF ON ACC.user_id = INF.iuid ";
$query .= "LEFT JOIN ec_sales SAL ON ACC.user_id = SAL.suid ";
$query .= "ORDER BY SAL.mentor";

$s = $sqlConnection->query($query);

if (!$s) {
    die($sqlConnection->error);
} else {
    while ($row = $s->fetch_assoc()) {
        $exarr = explode(',', $row['username']);

        $sqlConnection->query("INSERT INTO mytable (exceptions) VALUES('$exarr')");
    }
}

Answer 1

您需要在while循环外写入插入查询，并将用户名与,连接起来

while ($row = $s->fetch_assoc()) {
    $username .= $row['username'] . ",";// create string like john,mark,mary,luke,james,

}
// outside while loop
$username = rtrim($username, ",");// remove last comma

$sqlConnection->query("INSERT INTO mytable (exceptions) VALUES('$username')");

Answer 2

试试这个..

$s = $sqlConnection->query($query);
if (!$s) {
    die($sqlConnection->error);
} 
else {
    $str = '';
    while ($row = $s->fetch_assoc()) {
    // concat comma with $str when $str is not empty. so it concate comma from second circle
    if($str !=''){ $str .= ',';}
    //concat username one by one to make complete string
    $str .= $row['username']; 
}
// Finally do insert the complete string into a table
$sqlConnection->query("INSERT INTO mytable (exceptions) VALUES('$str')");

Answer 3

你可以在mysql中使用sql group_concat函数

$query = "SELECT SAL.mentor AS mentor, group_concat(ACC.username) AS username";
$query .= "FROM ec_accounts ACC ";
$query .= "LEFT JOIN ec_info INF ON ACC.user_id = INF.iuid ";
$query .= "LEFT JOIN ec_sales SAL ON ACC.user_id = SAL.suid ";
$query .= "GROUP BY  mentor ";
$query .= "ORDER BY SAL.mentor";

PHP mysqli与逗号一起插入而不是一个一个

3 个答案: