search template – meta_query

Hi,

I am putting together a search.php template.

When I try to query_posts with inclusion of meta_query, it doesn’t seem to catch.

$args = array(

"post_type" => "featured-work",
"posts_per_page" => "-1",
'meta_query' => array(
 array(
 'key' => '_fwork_projectclient'
 )
)

);

$myQuery = new WP_Query($args);

if ($myQuery->have_posts()) :
while ($myQuery->have_posts()) : $myQuery->the_post();

echo the_title();

endwhile; else:
endif;

I’ve tried this same query on a custom page template and it works as expected.. Any reason for this seemingly odd behavior?