Count number of rows buffered in sqlite result set

Question

I am using count function to get the number of rows buffered in a resultset.

But it always returns count as one even if resultset is empty.

Please see the co

Answer 1

As per your comment if you just want to return the count of records you could wrap your query in a SELECT COUNT(*) and change $dbhandle->query to $dbhandle->querySingle. This will work with or without LIMIT.

$dbhandle = new SQLite3("sqlitedb_111.db");
$selQuery1 = "SELECT COUNT(*) FROM (SELECT id,dbname,tabname,fieldname FROM scan_results ORDER BY id ASC LIMIT  0,10)";
$resQuery1 = $dbhandle->querySingle($selQuery1);
print count($resQuery1);

Answer 2

SQLite is an embedded database, i.e., there is no client/server communication overhead. Therefore, it can return the results dynamically; there is only a single row buffered at any time.

To get the number of result rows, you either have to step through the results, or execute something like SELECT COUNT(*) FROM (original query).

Answer 3

Result is an array. find the size of the array.

    $dbhandle = new SQLite3("sqlitedb_111.db");
    $selQuery1 = "SELECT id,dbname,tabname,fieldname FROM scan_results ORDER BY id ASC LIMIT  0,10";
    $resQuery1 = $dbhandle->query($selQuery1);
    $noofrows=sizeof($resQuery1);
    echo $noofrows;

Answer 4

Call numRows() on the result set.

From http://php.net/manual/en/function.sqlite-num-rows.php

<?php
$db = new SQLiteDatabase('mysqlitedb');
$result = $db->query("SELECT * FROM mytable WHERE name='John Doe'");
$rows = $result->numRows();

echo "Number of rows: $rows";
?>