如何获取返回的行数？

Question

我有这个查询，我正在计算点击的歌曲数是否可以获得返回的行数？ 因为我的主机不允许需要很长时间的查询所以我想获取行数然后再次运行查询并偏移它以获得下一个 50 等等

SELECT mv.id, mv.songname, mv.slug, (SELECT Count(*) FROM clickedsongname WHERE clickedsongname.songid = mv.id) Count FROM videoname mv;

我试过这样做来获得计数：

SELECT count(*) mv.id, mv.songname, mv.slug, (SELECT Count(*) FROM clickedsongname WHERE clickedsongname.songid = mv.id) Count FROM videoname mv;

和

SELECT count(*) mv.id, mv.songname, mv.slug, (SELECT Count(*) FROM clickedsongname WHERE clickedsongname.songid = mv.id) Count FROM videoname mv as overallcount

Answer 1

您可以使用一些内置的 PHP MySQLi 功能。

#define the connection
$con = mysqli_connect("ip","user","pass","dbname");

#define the query
$query = '(query that gets rows)';

#run the query
$result = mysqli_query($con, $query) or die(mysql_error());

#Get the row count
$rows = mysqli_num_rows($result);

print_r($rows);

希望这可以帮助！