SQL SELECT 多个作者？

Question

如何在搜索中选择多个项目？在这里，我有一个作者列表，我想从中获取类别......但它不适用于逗号。我需要做什么？

<?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

基本上你需要：

WHERE posts.post_author IN ($author)