如何解决SQL在同一张表上插入一个foreach选择?
| 我可以通过1条sql语句将其组合起来,而不是通过PHP来做到这一点吗?object_ids = \"select object_id from `wp_term_relationships` where `term_taxonomy_id` = 14;\";
foreach(object_ids as object_id)
{
\"insert into `wp_term_relationships` VALUES (\" . object_id . \",1597,0);\";
}
(对于wordpress:对于每个具有类别(14)的帖子,请添加新的词语关系(1597))
解决方法
INSERT INTO `wp_term_relationships`
SELECT object_id,1597,0
FROM `wp_term_relationships`
WHERE `term_taxonomy_id` = 14;
, 更好的东西是:
INSERT INTO wp_term_relationships
SELECT object_id,0
FROM wp_term_relationships
WHERE term_taxonomy_id = 14
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