mysql num rows

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showing results for - "mysql num rows"
Mats
26 Nov 2017
1<?php 
2/*
3Explination 
4The mysqli_num_rows() function is an inbuilt function in PHP 
5which is used to return the number of rows present in the result set. 
6It is generally used to check if data is present in the database or not. 
7To use this function, it is mandatory to first set up the connection with the MySQL database.
8*/
9	// Setting up connection with database Geeks 
10	$con = mysqli_connect("localhost", "root", "", "testing"); 
11	
12	// Check connection 
13	if (mysqli_connect_errno()) { 
14		echo "Database connection failed."; 
15	} 
16	// Fetch Query
17	$query = "SELECT Username, Password FROM users"; 
18	
19	// Execute the query and store the result set 
20	$result = mysqli_query($con, $query); 
21	
22	if ($result) { 
23		// it return number of rows in the table. 
24		$row = mysqli_num_rows($result); 
25		if ($row) { 
26			 	printf("Number of row in the table : " . $row); 
27			} 
28		// close the result. 
29		mysqli_free_result($result); 
30	} 
31
32// Output : Number of row in the table : 5
33?> 
34
Emlyn
14 Jan 2020
1//number of rows retrieved from a query
2<?php
3
4$link = mysql_connect("localhost""mysql_user""mysql_password");
5mysql_select_db("database"$link);
6
7$result = mysql_query("SELECT * FROM table1"$link);
8$num_rows = mysql_num_rows($result);
9
10echo "$num_rows Rows\n";
11
12?>
13
14
Mads
26 May 2019
1SELECT row_number() over ( order by firstName) RowNumberSqeuence,FirstName from rowNumberDemo
2 order by FirstName;
Patti
11 Jul 2016
1SET @row_number = 0; 
2SELECT 
3    (@row_number:=@row_number + 1) AS num, 
4    firstName, 
5    lastName
6FROM
7    employees
8ORDER BY firstName, lastName    
9LIMIT 5;
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