WordPress | WP_Query('s=a') returns nothing -

i have following code:

$data = new wp_query('s=a'); 

and print_r returns following data:

wp_query object (     [query_vars] => array         (             [s] =>             [error] =>              [m] => 0             [p] => 0             [post_parent] =>              [subpost] =>              [subpost_id] =>              [attachment] =>              [attachment_id] => 0             [name] =>              [static] =>              [pagename] =>              [page_id] => 0             [second] =>              [minute] =>              [hour] =>              [day] => 0             [monthnum] => 0             [year] => 0             [w] => 0             [category_name] =>              [tag] =>              [cat] =>              [tag_id] =>              [author_name] =>              [feed] =>              [tb] =>              [paged] => 0             [comments_popup] =>              [meta_key] =>              [meta_value] =>              [preview] =>              [sentence] =>              [fields] =>              [menu_order] =>              [category__in] => array                 (                 )              [category__not_in] => array                 (                 )              [category__and] => array                 (                 )              [post__in] => array                 (                 )              [post__not_in] => array                 (                 )              [tag__in] => array                 (                 )              [tag__not_in] => array                 (                 )              [tag__and] => array                 (                 )              [tag_slug__in] => array                 (                 )              [tag_slug__and] => array                 (                 )              [ignore_sticky_posts] =>              [suppress_filters] =>              [cache_results] => 1             [update_post_term_cache] => 1             [update_post_meta_cache] => 1             [post_type] =>             [posts_per_page] => 10             [nopaging] =>              [comments_per_page] => 50             [no_found_rows] =>              [search_terms] => array                 (                     [0] =>                 )              [order] => desc         )      [tax_query] => wp_tax_query object         (             [queries] => array                 (                 )              [relation] => ,         )      [meta_query] => wp_meta_query object         (             [queries] => array                 (                 )              [relation] =>          )      [post_count] => 0     [current_post] => -1     [in_the_loop] =>      [comment_count] => 0     [current_comment] => -1     [found_posts] => 0     [max_num_pages] => 0     [max_num_comment_pages] => 0     [is_single] =>      [is_preview] =>      [is_page] =>      [is_archive] =>      [is_date] =>      [is_year] =>      [is_month] =>      [is_day] =>      [is_time] =>      [is_author] =>      [is_category] =>      [is_tag] =>      [is_tax] =>      [is_search] => 1     [is_feed] =>      [is_comment_feed] =>      [is_trackback] =>      [is_home] =>      [is_404] =>      [is_comments_popup] =>      [is_paged] =>      [is_admin] =>      [is_attachment] =>      [is_singular] =>      [is_robots] =>      [is_posts_page] =>      [is_post_type_archive] =>      [query_vars_hash] => 1015947de489d0153582586bded7c016     [query_vars_changed] =>      [thumbnails_cached] =>      [query] => array         (             [s] =>         )      [request] => select * wp_posts 1=2     [posts] => array         (         )  ) 

what wrong query , not return data ? take @ "requer" "select * wp_posts 1=2"

i ran in exact same problem. case turned out due relevanssi search plugin.

i found this in relevanssi support forums.

add theme's functions.php or somehere in plugin.

add_filter('relevanssi_prevent_default_request',   'rlv_fix_archive_kill', 10, 2); function rlv_fix_archive_kill($kill, $query) {     if (empty($query->query_vars['s'])) $kill = false;     return $kill; }