I have a database crm_data
in which I have multiple tables. Now I want to calculate all rows in whole database where column_name
value is equal to YES
. To calculate all rows in database I am using this mysql query.
My SQL Query:
$sql = $db_con2->prepare("SELECT SUM(TABLE_ROWS) AS all_rows FROM
INFORMATION_SCHEMA.TABLES WHERE TABLE_SCHEMA = 'crm_data'");
$sql->execute();
$all_rows = $sql->fetchAll();
if (count($all_rows) > 0) {
foreach ($all_rows as $all_rows) {
echo $all_rows['all_rows'];
}
} else {
$all_rows = '0';
}
Thanks
What I did I went back to basics and used SHOW TABLES
then I use table query SELECT * FROM $company WHERE rental_status = 'YES'
. and I got the results.
BTW thanks guys giving me your suggestion.
Try this, i hope it works for you
// connect to Database.
$links = mysqli_connect($db_host, $db_username, $db_password, $db_name );
if($links === false){
die("ERROR: Could not connect. " . mysqli_connect_error());
}
//get total
$n = 'YES';
$result = mysqli_query($links,"SELECT Count(*) As column_name FROM crm_data WHERE column_name='".$n."'");
$rows = mysqli_num_rows($result);
if($rows){
$gt = mysqli_fetch_assoc($result);
$total = $gt["column_name"];
}
echo $total;
Using PDO as requested.
// using PDO
$servername = "localhost";
$username = "user";
$password = "pass";
try {
$conn = new PDO("mysql:host=$servername;dbname=dbname", $username, $password);
// set the PDO error mode to exception
$conn->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
//echo "Connected successfully";
// call for the row count here.
$w='YES';
$rs = $conn->prepare("SELECT Count(*) As column_name FROM crm_data WHERE column_name='".$w."'");
$rs->execute();
$count = $rs->rowCount();
echo '<p>Total:'.$count.'</p>';
}
catch(PDOException $e)
{
echo "Connection failed: " . $e->getMessage();
}
You're not querying the data in your database you're now querying the actual structure of the database, which is concerning.
Nevertheless...
SELECT SUM(`COLUMN_NAME`) FROM `INFORMATION_SCHEMA`.`COLUMNS` where `COLUMN_NAME` = 'YES' AND `TABLE_SCHEMA` = 'crm_data';
Is the query you are looking for...
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