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1What is the maximum number of queries in a multi query?
2$conn = new mysqli($db_hostname, $db_username, $db_password);
3    if (mysqli_connect_errno()) {
4      exit('Connect failed: '. mysqli_connect_error());
5    }  
6
7   $sql = "CREATE TABLE IF NOT EXISTS......";
8   $sql .= "CREATE TABLE IF NOT EXISTS......";
9   $sql .= "CREATE TABLE IF NOT EXISTS......";
10   $sql .= "INSERT ......";
11   $sql .= "INSERT ......";
12    <and so on>
13    mysqli_autocommit($conn, false);
14    mysqli_multi_query($conn, $sql);
15    mysqli_rollback($conn);