PHP & MySQL: Truncate multiple tables

Question

I tried to truncate a table but why is it not working? must something wrong in the database query?

$sql = \"TRUNCATE TABLE `table_name`\";

$result = $connec         


        

Answer 1

By the MySQL Reference Manual

http://dev.mysql.com/doc/refman/5.0/en/truncate-table.html

You can only delete one table at a time using TRUNCATE.

You could try executing multiple queries in one PHP query by using a ";" delimiter between them.

Answer 2

thanks for the help guys! here is my answer,

# truncate data from all table
# $sql = "SHOW TABLES IN 1hundred_2011";
# or,
$sql = "SELECT * FROM INFORMATION_SCHEMA.TABLES WHERE TABLE_SCHEMA LIKE '".DB_NAME."'";

# use the instantiated db connection object from the init.php, to process the query
$tables = $connection -> fetch_all($sql);
//print_r($tables);

foreach($tables as $table) 
{
    //echo $table['TABLE_NAME'].'<br/>';

    # truncate data from this table
    # $sql = "TRUNCATE TABLE `developer_configurations_cms`";

    # use the instantiated db connection object from the init.php, to process the query
    # $result = $connection -> query($sql);

    # truncate data from this table
    $sql = "TRUNCATE TABLE `".$table['TABLE_NAME']."`";

    # use the instantiated db connection object from the init.php, to process the query
    $result = $connection -> query($sql);
}

Answer 3

You have a couple different option.

• Run a query for each truncate
• Create a stored procedure that will truncate all the tables you want to do.