Wordpress - query_post by title?

functions.php

<?php
add_filter( 'posts_where', 'title_like_posts_where', 10, 2 );
function title_like_posts_where( $where, $wp_query ) {
    global $wpdb;
    if ( $post_title_like = $wp_query->get( 'post_title_like' ) ) {
        $where .= ' AND ' . $wpdb->posts . '.post_title LIKE \'%' . esc_sql( $wpdb->esc_like( $post_title_like ) ) . '%\'';
    }
    return $where;
}
?>

Then:

$args = array(
    'post_title_like' => $str
);
$res = new WP_Query($args);

got this working with the help from this post in the end. Cheers guys;

$finalArgs =  array (       
        'posts_per_page'=>5,
        'order' => 'ASC',
        'post_type' => 'school'                         
    );

    // Create a new instance
    $searchSchools = new WP_Query( $finalArgs );

    $mypostids = $wpdb->get_col("select ID from $wpdb->posts where post_title LIKE '".$str."%' ");

    $args = array(
        'post__in'=> $mypostids,
        'post_type'=>'school',
        'orderby'=>'title',
        'order'=>'asc'
    );

    $res = new WP_Query($args);

    while( $res->have_posts() ) : $res->the_post();

        global $post;

        $EstablishmentNumber = get_post_meta($post->ID,'EstablishmentNumber', true);

        $schl = array('id'=>$EstablishmentNumber, 'label'=>$post->post_title , 'value'=>$EstablishmentNumber );     
        $matchedSchools[] = $schl;


    endwhile;

Get the title from another loop

$title = get_the_title();

and use the $title variable if you wish.

<?php

global $post, $current_post_id, $title;

function filter_where($where = ''){

    global $title;
    $where .= "AND post_title = '$title'";
    return $where;

}
add_filter('posts_where', 'filter_where');

$query = new WP_Query(array('post_type' => 'sessions') );
if ( have_posts() ) : while ( $query->have_posts() ) : $query->the_post();

    /* Loop here */

endwhile; endif; 

wp_reset_query(); ?>