mysql complex where query

Question

我试图解决这个问题过去几天的任何帮助将不胜感激。

我有一个退货项目，其中在taxonomy1中有term1，在taksonomy2中有term2。

这是我的查询：用以下（更换并用OR）的

WHERE (items.org = '2') AND (((terms_taxonomy.taxonomy = '1') AND (term.pojam LIKE '%term1%')) AND ((terms_taxonomy.taxonomy = '2') AND (term.pojam LIKE '%term2%'))) 

：

SELECT items.* 
FROM (`items`) 
LEFT JOIN `rel_taxonomy` ON `rel_taxonomy`.`item_id` = `items`.`id` 
LEFT JOIN `terms_taxonomy` ON `terms_taxonomy`.`terms_taxonomy_id` = `rel_taxonomy`.`terms_taxonomy_id` 
LEFT JOIN `terms` ON `term`.`id` = `terms_taxonomy`.`term_id` 
WHERE (items.org = '2') AND (((terms_taxonomy.taxonomy = '1') AND (term.pojam LIKE '%term1%')) AND ((terms_taxonomy.taxonomy = '2') AND (term.pojam LIKE '%term2%'))) 
GROUP BY `items`.`id` 

如果我更换线

WHERE (items.org = '2') AND (((terms_taxonomy.taxonomy = '1') AND (term.pojam LIKE '%term1%')) OR((terms_taxonomy.taxonomy = '2') AND (term.pojam LIKE '%term2%'))) 

一切正常精细。但我仍然需要AND。

表方案

items 
id | title | org 

rel_taxonomy 
item_id | terms_taxonomy_id 

terms_taxonomy 
terms_taxonomy_id | terms_id | taxsonomy 

terms 
id | term 

，所以我试图让它们具有在taksonomy2 taxonomy1和词条2字词1项。

Answer 1

使用OR并添加HAVING条款

SELECT i.id 
FROM items i 
LEFT JOIN rel_taxonomy rt ON rt.item_id = i.id 
LEFT JOIN terms_taxonomy tt ON tt.terms_taxonomy_id = rt.terms_taxonomy_id 
LEFT JOIN terms t ON t.id = tt.term_id 
WHERE i.org = '2' 
AND 
( 
     (tt.taxonomy = '1' AND t.pojam LIKE '%term1%') 
    OR (tt.taxonomy = '2' AND t.pojam LIKE '%term2%') 
) 
GROUP BY i.id 
having count(distinct tt.taxonomy) = 2