How can I count the numbers of rows that a MySQL query returned?
You don't say what language or client library you are using, but the API does provide a mysql_num_rows function which can tell you the number of rows in a result. This is exposed in PHP, for example, as …
php - What does MYSQLI_NUM mean and do? - Stack Overflow
Nov 6, 2009 · MYSQLI_NUM is a constant in PHP associated with a mysqli_result. If you're using mysqli to retrieve information from the database, MYSQLI_NUM can be used to specify the return format of …
SELECT COUNT () vs mysql_num_rows (); - Stack Overflow
When using mysql_num_rows, the server will process the entire result set, allocate memory for all those results, and put the server in fetching mode, which involves a lot of different details, such as locking. …
php - MySQL mysql_num_rows (); - Stack Overflow
Dec 19, 2013 · MySQL mysql_num_rows (); Asked 12 years, 1 month ago Modified 12 years, 1 month ago Viewed 28k times
Warning: mysql_num_rows (): supplied argument is not a valid MySQL ...
0 From the PHP docs: Retrieves the number of rows from a result set. This command is only valid for statements like SELECT or SHOW that return an actual result set. To retrieve the number of rows …
php - mysql_num_rows () expects parameter 1 to be resource, boolean ...
Oct 14, 2011 · Warning: mysql_num_rows() expects parameter 1 to be resource, boolean given in C:\Program Files (x86)\EasyPHP-5.3.5.0\www\searchscript\search.php on line 86 I'll show you the …
Call to undefined function MYSQL_NUM_ROWS() - Stack Overflow
Call to undefined function MYSQL_NUM_ROWS () [duplicate] Asked 9 years, 7 months ago Modified 9 years, 7 months ago Viewed 54k times
Proper way to ask if mysql_num_rows in PHP - Stack Overflow
Sep 21, 2016 · Proper way to ask if mysql_num_rows in PHP Asked 14 years, 4 months ago Modified 9 years, 4 months ago Viewed 21k times
Warning: mysql_num_rows (): supplied argument is not a valid MySQL ...
Oct 20, 2012 · Warning: mysql_num_rows (): supplied argument is not a valid MySQL result resource in ../view-ind-order.php on line 28 This script is supposed to retrieve the order (from a page which lists …
¿Por qué mysql_num_rows me devuelve 1 si no hay registros en la …
May 22, 2017 · ¿Por qué mysql_num_rows me devuelve 1 si no hay registros en la tabla de la base de datos? Formulada hace 8 años y 8 meses Modificada hace 4 años y 4 meses Vista 883 veces