WpDatatables – cannot find GD custom fields

HI GD.

I would like to use with WpDatatables. The Jquery Datatables plugin. The plugin creates a table from wordpress posts. But one problem. I cannot find the custom GD fields. For example, in the CPT NETWORK i have a custom field called TEST. Here is the generated mysql output from Datatables. Can you show me how to add the GD custom fields to the mysql query?

SELECT LEFT( posts_gd_network.post_content, 100) AS gd_network_post_content_limited_100_chars,
posts_gd_network.post_name AS gd_network_post_name,
gd_network_taxonomy_gd_networkcategory_tbl.name AS gd_network_taxonomy_gd_networkcategory
FROM am_posts AS posts_gd_network
INNER JOIN (SELECT name, object_id as id FROM am_terms AS gd_network_taxonomy_gd_networkcategory_tbl_terms INNER JOIN am_term_taxonomy AS gd_network_taxonomy_gd_networkcategory_tbl_termtaxonomy ON gd_network_taxonomy_gd_networkcategory_tbl_termtaxonomy.term_id = gd_network_taxonomy_gd_networkcategory_tbl_terms.term_id AND gd_network_taxonomy_gd_networkcategory_tbl_termtaxonomy.taxonomy = ‘gd_networkcategory’ INNER JOIN am_term_relationships AS rel_gd_network_taxonomy_gd_networkcategory_tbl ON gd_network_taxonomy_gd_networkcategory_tbl_termtaxonomy.term_taxonomy_id = rel_gd_network_taxonomy_gd_networkcategory_tbl.term_taxonomy_id) AS gd_network_taxonomy_gd_networkcategory_tbl
ON gd_network_taxonomy_gd_networkcategory_tbl.ID = posts_gd_network.id
WHERE 1=1
AND posts_gd_network.post_type = ‘gd_network’