What is the equivalent WP_Query of a SQL Query?

1. What is $WP_Query?
2. What does WP_Query return?
3. What is offset in WP_Query?
4. Does WP_Query cache?
5. What is Wp_reset_postdata ()?
6. What is Posts_per_page?
7. What is Meta_value?
8. What is taxonomy query and meta query?
9. How do I make a query in WordPress?
10. How do I get the post ID to loop in WordPress?
11. How do I query categories in WordPress?
12. How do I use offset in WordPress?

What is $WP_Query?

WP_Query is a class defined in WordPress. It allows developers to write custom queries and display posts using different parameters. It is possible for developers to directly query WordPress database. However, WP_Query is one of the recommended ways to query posts from WordPress database.

What does WP_Query return?

The WP_Query object is used to query posts and will return an object containing an array of $post objects and many useful methods. The get_posts function makes use of the above WP_Query object, however, it only returns an array of $post objects making it a simpler way to find and loop over posts.

What is offset in WP_Query?

Offsets are useful because they can allow a developer to skip a certain number of WordPress posts before starting output. ... If a developer sets a manual offset value, pagination will not function because that value will override WordPress's automatic adjustment of the offset for a given page.

Does WP_Query cache?

Usually, we don't need to build SQL queries (and often we shouldn't) because the WP_Query class and its methods provide us with a safe and efficient way to retrieve data from the database. ... WordPress builds well-optimized SQL queries and provides a caching system out of the box.

What is Wp_reset_postdata ()?

wp_reset_postdata() restores the global $post variable to the current post in the main query (contained in the global $wp_query variable as opposed to the $sec_query variable), so that the template tags refer to the main query loop by default again.

What is Posts_per_page?

1. The right answer for your issue is 'posts_per_page' => -1 because -1 will return unlimited posts per page As the others users answer.

What is Meta_value?

meta_value. The meta_value argument queries post that have the value you define. The meta_value argument is used for string values. This example will query any posts with a custom meta field that has the value “data1”.

What is taxonomy query and meta query?

lewismcarey/WORDPRESS WP Query Taxonomy and Meta Query

This shows the two alternate methods to running taxonomy and post meta paramaters within WP Query. * Shorthand version only accepts one postmeta key. * Longhand version is the full method and has much more flexiblity for complex queries.

How do I make a query in WordPress?

Below is an example of querying the database for posts within a category using WP_Query class. $query = new WP_Query( 'cat=12' ); The result will contain all posts within that category which can then be displayed using a template. Developers can also query WordPress database directly by calling in the $wpdb class.

How do I get the post ID to loop in WordPress?

14 Ways to Get Post ID in WordPress

1. Add the Post ID column to the WordPress Posts Table. I like this method. ...
2. From the Global $post object. ...
3. Using get_the_id() and the_id() functions. ...
4. Get Post ID by Title. ...
5. Get Post ID by Slug. ...
6. Get Post ID by URL. ...
7. Get Post ID shown on the front page. ...
8. Easy Way to Get Post ID in a WP_Query loop.

How do I query categories in WordPress?

In general avoid using query_posts because it is altering the globals inside the main loop. You can use get_posts() : <? php $args = array( 'posts_per_page' => 5, 'offset'=> 1, 'category' => 1 ); $myposts = get_posts( $args ); foreach ( $myposts as $post ) : setup_postdata( $post ); ?>

How do I use offset in WordPress?

offset is one of the arguments that you can pass to WP_Query , so it belongs in the $args array: $args = array( 'post_type' => 'post', 'category_name' => 'category', 'orderby' => 'date', 'order' => 'DESC', 'showposts' => 4, 'offset' => 4, ); PS: $wp_query is a reserved variable used by the main query.