Question

如何获取sql表中具有特定id与php的行之后的行数？我想获得ID为6的行之后的行数。

Answer 1

Select count(*) from TableName where ID > 6

Answer 2

用于计算ID大于6的行的查询的SQL，假设您的表名为table且ID列名为id，将为：

SELECT count(*) FROM table WHERE id > 6;

要从PHP执行此操作，您可以修改example in the docs以添加自己的查询。输出也可以调整为返回标量值。

<?php
// Connecting, selecting database
$link = mysql_connect('mysql_host', 'mysql_user', 'mysql_password')
    or die('Could not connect: ' . mysql_error());
echo 'Connected successfully';
mysql_select_db('my_database') or die('Could not select database');

// Performing SQL query
$query = 'SELECT count(*) FROM table WHERE id > 6';
$result = mysql_query($query) or die('Query failed: ' . mysql_error());

// Printing results in HTML
echo "<table>\n";
while ($line = mysql_fetch_array($result, MYSQL_ASSOC)) {
    echo "\t<tr>\n";
    foreach ($line as $col_value) {
        echo "\t\t<td>$col_value</td>\n";
    }
    echo "\t</tr>\n";
}
echo "</table>\n";

// Free resultset
mysql_free_result($result);

// Closing connection
mysql_close($link);
?>

如何获取具有特定ID的行之后的表中的行数？

2 个答案: