mysql - 在教义 2 中按 UNION 排序

Question

我想显示最后查看的 10 个元素。

这是我在 SQL 中的查询：

SELECT compte.dateConsultation AS dateObjet, societe.nom FROM compte, societe WHERE compte.idSociete = societe.id

UNION

SELECT opportunite.dateConsultation as dateObjet, opportunite.nom
FROM opportunite

UNION

SELECT contact.dateConsultation as dateObjet, CONCAT(CONCAT(personne.nom, " "),personne.prenom)
FROM contact, personne
WHERE contact.idPersonne = personne.id

UNION

SELECT piste.dateConsultation as dateObjet, CONCAT(CONCAT(personne.nom, " "),personne.prenom)
FROM piste, personne
WHERE piste.idPersonne = personne.id

UNION

SELECT tache.dateConsultation as dateObjet, tache.objet
FROM tache

UNION

SELECT evenement.dateConsultation as dateObjet, evenement.objet
FROM evenement

ORDER BY dateObjet DESC

我知道在 Doctrine 中不支持 UNION。但我需要选择所有元素并对结果执行 orderBy dateConsultation。

Answer 1

SELECT * FROM (Your query here -- without the order by) ORDER BY dateObjet DESC