如何在“tax_query”和“meta_query”中添加“OR”关系。因为默认是“AND”
[query] => Array
(
[relation] => OR
[posts_per_page] => 3
[offset] => 0
[orderby] => post_date
[order] => DESC
[post_type] => biography
[post_status] => publish
[meta_query] => Array
(
[relation] => OR
[0] => Array
(
[key] => f_name
[value] => gh
[compare] => LIKE
)
[1] => Array
(
[key] => l_name
[value] => gh
[compare] => LIKE
)
)
[tax_query] => Array
(
[relation] => OR
[0] => Array
(
[taxonomy] => historical-period
[field] => term_id
[terms] => Array
(
[0] => 27
)
[operator] => IN
)
)
)
我们得到以下结果
结果
SELECT SQL_CALC_FOUND_ROWS wp_posts.ID FROM wp_posts LEFT 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 ) WHERE 1=1 AND ( wp_term_relationships.term_taxonomy_id IN (27))
**AND **
(( wp_postmeta.meta_key = 'f_name' AND wp_postmeta.meta_value LIKE '%gh%' ) OR ( wp_postmeta.meta_key = '%gh%' )) AND wp_posts.post_type = 'biography' AND ((wp_posts.post_status = 'publish')) GROUP BY wp_posts.ID ORDER BY wp_posts.post_date DESC LIMIT 0, 3
我们需要以下结果
结果
SELECT SQL_CALC_FOUND_ROWS wp_posts.ID FROM wp_posts LEFT 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 ) WHERE 1=1 AND ( wp_term_relationships.term_taxonomy_id IN (27))
**OR**
(( wp_postmeta.meta_key = 'f_name' AND wp_postmeta.meta_value LIKE '%gh%' ) OR ( wp_postmeta.meta_key = '%gh%' )) AND wp_posts.post_type = 'biography' AND ((wp_posts.post_status = 'publish')) GROUP BY wp_posts.ID ORDER BY wp_posts.post_date DESC LIMIT 0, 3
请帮助在“tax_query”和“meta_query”之间添加“或”关系
我也试过下面的代码。但我们还没有得到准确的结果。
add_filter('get_meta_sql', 'filter_query', 10, 1);
$posts = new WP_Query($post_args);
remove_filter('get_meta_sql', 'filter_query');
function filter_query($sql){
$pos = strpos($sql['where'], 'AND');
if ($pos !== false) {
$sql['where'] = substr_replace($sql['where'], 'OR', $pos, strlen('AND'));
}
return $sql;
}
参考链接：
如何在 tax_query 和 meta_query Wordpress 中给出 OR 关系
问题：
如果我们使用上面的代码，它会在整个查询中添加“或”关系，包括 meta_key 和 meta_value 关系。
$photos_query = new WP_Query( $photos );
$quotes_query = new WP_Query( $quotes );
$result = new WP_Query();
// start putting the contents in the new object
$result->posts = array_merge( $photos_query->posts, $quotes_query->posts );
// here you might wanna apply some sort of sorting on $result->posts
// we also need to set post count correctly so as to enable the looping
$result->post_count = count( $result->posts );
问题： 如果我们使用上面的代码，我们会发现很多重复的结果。而且要花很多时间。有时它不返回结果，因为查询执行会话超时。
参考链接：
$tax_query = array(
'taxonomy' => 'historical-period',
'field' => 'term_id',
'terms' => array( 27 ),
'operator' => 'IN'
);
$meta_query = array(
'relation' => 'OR',
array(
'key' => 'f_name',
'value' => 'gh',
'compare' => 'LIKE'
),
array(
'key' => 'l_name',
'value' => 'gh',
'compare' => 'LIKE'
)
);
$meta_subquery = new WP_Query( array(
'post_type' => 'biography',
'post_status' => 'publish',
'meta_query' => $meta_query,
'fields' => 'ids'
) );
$main_query_args = array(
'posts_per_page' => 3,
'offset' => 0,
'orderby' => 'post_date',
'order' => 'DESC',
'post_type' => 'biography',
'post_status' => 'publish',
'tax_query' => $tax_query,
'post__in' => $meta_subquery->posts
);
$main_query = new WP_Query( $main_query_args );
SQL:
SELECT SQL_CALC_FOUND_ROWS wp_posts.ID
FROM wp_posts
LEFT JOIN wp_term_relationships ON wp_posts.ID = wp_term_relationships.object_id
WHERE wp_posts.post_type = 'biography'
AND wp_posts.post_status = 'publish'
AND (
wp_term_relationships.term_taxonomy_id IN (27)
OR wp_posts.ID IN (
SELECT post_id
FROM wp_postmeta
WHERE (
(meta_key = 'f_name' AND meta_value LIKE '%gh%')
OR (meta_key = 'l_name' AND meta_value LIKE '%gh%')
)
)
)
GROUP BY wp_posts.ID
ORDER BY wp_posts.post_date DESC
LIMIT 0, 3;
我已经尝试解决多种方法来添加“tax_query”和“meta_query”之间的“OR”关系但是，我们仍然没有得到准确的结果。所以最后，我使用WordPress SQL查询得到了结果。
$all_sql="SELECT SQL_CALC_FOUND_ROWS wp_posts.ID FROM wp_posts LEFT 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 ) WHERE 1=1 AND ( wp_term_relationships.term_taxonomy_id IN (27))
OR
(( wp_postmeta.meta_key = 'f_name' AND wp_postmeta.meta_value LIKE '%gh%' ) OR ( wp_postmeta.meta_key = '%gh%' )) AND wp_posts.post_type = 'biography' AND ((wp_posts.post_status = 'publish')) GROUP BY wp_posts.ID ORDER BY wp_posts.post_date DESC LIMIT 0, 3"
$all_result = $wpdb->get_results($all_sql);
感谢Nigel Ren、CBroe和4efirrr您的支持。