How to select posts from wordpress db? - php

Question

I want to read posts from my wordpress website's db in order to show in another format. But when I check the table there are multiple records for a single post.
My query brings all edit rows for just one post. So there are many rows for just one post. I want to handle last edited and
It adds a new row after each edition. What would be my SELECT query for getting all posts with last edit? In other words what is wordpress' querying method to achieve this?
I have tried the following query with help of #Khushboo, but it results multiple rows for just one post again.
SELECT p.ID
FROM wp_posts AS p
INNER JOIN wp_postmeta AS pm ON p.ID = pm.post_id
WHERE p.post_status = 'publish'
AND p.post_type = 'post'
AND p.post_date < NOW( )

Answer 1

Try below :-
<?php
$querystr = "
SELECT $wpdb->posts.*
FROM $wpdb->posts, $wpdb->postmeta
WHERE $wpdb->posts.ID = $wpdb->postmeta.post_id
AND $wpdb->postmeta.meta_key = 'tag'
AND $wpdb->postmeta.meta_value = 'email'
AND $wpdb->posts.post_status = 'publish'
AND $wpdb->posts.post_type = 'post'
AND $wpdb->posts.post_date < NOW()
ORDER BY $wpdb->posts.post_date DESC
";
$pageposts = $wpdb->get_results($querystr, OBJECT);
?>
For more details, please check http://codex.wordpress.org/Displaying_Posts_Using_a_Custom_Select_Query