SQL SELECT多位作者？

Question

如何在我的搜索中選擇多個項目？在這裏，我有一個作者列表，我想從中獲取類別...但它不適用於逗號。我需要做什麼？

<?php 
$author = "4,1,909,900,970,968,5,972,969,965,971"; 

$categories = $wpdb->get_results(" 
SELECT DISTINCT(terms.term_id) as ID, terms.name, terms.slug, tax.description 
FROM $wpdb->posts as posts 
LEFT JOIN $wpdb->term_relationships as relationships ON posts.ID = relationships.object_ID 
LEFT JOIN $wpdb->term_taxonomy as tax ON relationships.term_taxonomy_id = tax.term_taxonomy_id 
LEFT JOIN $wpdb->terms as terms ON tax.term_id = terms.term_id 
WHERE posts.post_status = 'publish' AND 
    posts.post_author = '$author' AND 
    tax.taxonomy = 'category' 
ORDER BY terms.name ASC 
"); 

?> 

Answer 1

Take a Look at this question

基本上你將需要：

WHERE posts.post_author IN ($author)