WP all query options

offset - start from post number
orderby - order by id,author,title,date,modified,parent,rand,menu_order,meta_value
order - ASC,DESC
author - show posts from one author, use author id or name 
 
cat (int) - use category id.
category_name (string) - use category slug (NOT name).
category__and (array) - use category id.
category__in (array) - use category id.
category__not_in (array) - use category id.
 
tag (string) - use tag slug.
tag_id (int) - use tag id.
tag__and (array) - use tag ids.
tag__in (array) - use tag ids.
tag__not_in (array) - use tag ids.
tag_slug__and (array) - use tag slugs.
tag_slug__in (array) - use tag slugs.
 
tax_query (array) - use taxonomy parameters (available with Version 3.1).
taxonomy (string) - Taxonomy.
field (string) - Select taxonomy term by ('id' or 'slug')
terms (int/string/array) - Taxonomy term(s).
operator (string) - Operator to test. Possible values are 'IN', 'NOT IN', 'AND'.
 
p (int) - use post id.
name (string) - use post slug.
page_id (int) - use page id.
pagename (string) - use page slug.
post_parent (int) - use page id. Return just the child Pages.
post__in (array) - use post ids. Specify posts to retrieve.
post__not_in (array) - use post ids. Specify post NOT to retrieve.
 
post_type (string / array) - use post types. Retrieves posts by Post Types, default value is 'post';
	'post' - a post.
	'page' - a page.
	'revision' - a revision.
	'attachment' - an attachment. The default WP_Query sets 'post_status'=>'published', but attachments default to 	'post_status'=>'inherit' so you'll need to set the status to 'inherit' or 'any'.
	'any' - retrieves any type except revisions and types with 'exclude_from_search' set to true.
 
post_status (string / array) - use post status. Retrieves posts by Post Status, default value is 'publish'.
	'publish' - a published post or page.
	'pending' - post is pending review.
	'draft' - a post in draft status.
	'auto-draft' - a newly created post, with no content.
	'future' - a post to publish in the future.
	'private' - not visible to users who are not logged in.
	'inherit' - a revision. see get_children.
	'trash' - post is in trashbin (available with Version 2.9).
	'any' - retrieves any status except those from post types with 'exclude_from_search' set to true.
 
meta_key (string) - Custom field key.
meta_value (string) - Custom field value.
meta_compare (string) - Operator to test the 'meta_value'. Possible values are '!=', '>', '>=', '<', or '<='. Default value is '='.
 
meta_query (array) - Custom field parameters (available with Version 3.1).
key (string) - Custom field key.
value (string|array) - Custom field value (Note: Array support is limited to a compare value of 'IN', 'NOT IN', 'BETWEEN', or 'NOT BETWEEN')
compare (string) - Operator to test. Possible values are '=', '!=', '>', '>=', '<', '<=', 'LIKE', 'NOT LIKE', 'IN', 'NOT IN', 'BETWEEN', 'NOT BETWEEN'. Default value is '='.
type (string) - Custom field type. Possible values are 'NUMERIC', 'BINARY', 'CHAR', 'DATE', 'DATETIME', 'DECIMAL', 'SIGNED', 'TIME', 'UNSIGNED'. Default value is 'CHAR'.