我有一个基于这些参数的自定义循环（如下所示），由于某种原因，在运行时，返回的SQL包含以下片段：

。。。和wp\\U帖子。ID=-1。。。

我没有从db得到任何结果。如果在没有此片段的情况下对db运行查询，则会得到所需的结果。有人能指出导致这种行为的参数列表有什么问题吗？

$args = array (
    \'post_status\'           => \'draft\',
    \'posts_per_page\'        => 10,
    \'category_name\'         => $language_sql_param, //fixed
    \'meta_query\'            => array(
        array(
            \'key\'       => \'review_rating\',
            \'value\'     => \'3\',
            \'compare\'   => \'>\',
            \'type\'      => \'NUMERIC\',
        ),
    ),
    \'cache_results\'          => false,
    \'update_post_meta_cache\' => false,
    \'update_post_term_cache\' => false,
    \'suppress_filters\' => true,
    \'meta_key\' => \'review_id\',
    \'orderby\'  => \'meta_value_num\',
); 

$wp_query = new WP_Query( $args );

修改后的问题：我正在根据帖子所属的类别筛选帖子，在我的情况下，它们是国家代码。下面是WP在设置$language_sql_param 对此：

$language_sql_param = \'us,gb,ca,au,ie\'

它工作得很好，并为我在英语国家的帖子返回ID。

SELECT SQL_CALC_FOUND_ROWS wp_posts.ID
FROM wp_posts
    INNER JOIN wp_term_relationships ON (wp_posts.ID = wp_term_relationships.object_id)
    INNER JOIN wp_postmeta ON (wp_posts.ID = wp_postmeta.post_id)
    INNER JOIN wp_postmeta AS mt1 ON (wp_posts.ID = mt1.post_id)
WHERE 1=1
        AND ( wp_term_relationships.term_taxonomy_id IN (20,21,28,36,37) )
        AND wp_posts.post_type = \'post\'
        AND (wp_posts.post_status = \'draft\')
        AND (wp_postmeta.meta_key = \'review_id\'
        AND (mt1.meta_key = \'review_rating\'
        AND CAST(mt1.meta_value AS SIGNED) > \'3\') )
GROUP BY wp_posts.ID
ORDER BY wp_postmeta.meta_value+0 DESC
LIMIT 0, 10

当我设置$language_sql_param = "\'de,ch\'", 我得到以下SQL：

SELECT SQL_CALC_FOUND_ROWS wp_posts.ID
FROM wp_posts
    INNER JOIN wp_term_relationships ON (wp_posts.ID = wp_term_relationships.object_id)
    INNER JOIN wp_postmeta ON (wp_posts.ID = wp_postmeta.post_id)
    INNER JOIN wp_postmeta AS mt1 ON (wp_posts.ID = mt1.post_id)
WHERE 1=1
        AND wp_posts.ID = -1
        AND ( wp_term_relationships.term_taxonomy_id IN (27,34) )
        AND wp_posts.post_type = \'post\'
        AND (wp_posts.post_status = \'draft\')
        AND (wp_postmeta.meta_key = \'review_id\'
        AND (mt1.meta_key = \'review_rating\'
        AND CAST(mt1.meta_value AS SIGNED) > \'3\') )
GROUP BY wp_posts.ID
ORDER BY wp_postmeta.meta_value+0 DESC
LIMIT 0, 10

SQL有这个额外的AND wp_posts.ID = -1. WordPress似乎正确地为我正在筛选的类别生成IN子句，如AND (wp_term_relationships.term_taxonomy_id IN (27,34)), 但因为WordPress不知何故添加了AND wp_posts.ID = -1 条件没有返回帖子。

在哪里AND wp_posts.ID = -1 来自哪里？

\'category_name\'         => ",

\'category_name\'         => \'\',