número de fila mysql
SELECT row_number() over ( order by firstName) RowNumberSqeuence,FirstName from rowNumberDemo
order by FirstName;
Lucky Locust
SELECT row_number() over ( order by firstName) RowNumberSqeuence,FirstName from rowNumberDemo
order by FirstName;//number of rows retrieved from a query
<?php
$link = mysql_connect("localhost", "mysql_user", "mysql_password");
mysql_select_db("database", $link);
$result = mysql_query("SELECT * FROM table1", $link);
$num_rows = mysql_num_rows($result);
echo "$num_rows Rows\n";
?>
SET @row_number = 0;
SELECT
(@row_number:=@row_number + 1) AS num,
firstName,
lastName
FROM
employees
ORDER BY firstName, lastName
LIMIT 5;