mysql - 使用联接表在多个表中进行单个请求搜索

Question

我必须在 3 个不同的表中搜索一个术语。 这是我的 3 个要求，我只想提出一个。 表为 teledis、afr、software_cache。 如果您愿意，这是我的架构:http://imgur.com/aHqtE5P

SELECT teledis.nameid
FROM teledis 
LIKE vulcain = '%XXX%';



SELECT teledis.nameid
FROM joinafr
    JOIN teledis
        ON joinafr.teledis_id = teledis.idteledis
    JOIN afr 
        ON joinafr.afr_id = afr.idafr
WHERE afr.name LIKE '%XXX%';



SELECT teledis.nameid
FROM softs
    JOIN software_cache
        ON softs.id_soft_cache = software_cache.id
    JOIN joinsoft
        ON softs.idsofts = joinsoft.soft_id
    JOIN teledis
        ON joinsoft.soft_id = teledis.idteledis WHERE software_cache.name LIKE '%XXX';

Answer 1

SELECT teledis.nameid
FROM teledis 
WHERE vulcain LIKE '%XXX%'
UNION
SELECT teledis.nameid
FROM joinafr
    JOIN teledis
        ON joinafr.teledis_id = teledis.idteledis
    JOIN afr 
        ON joinafr.afr_id = afr.idafr
WHERE afr.name LIKE '%XXX%'
UNION
SELECT teledis.nameid
FROM softs
    JOIN software_cache
        ON softs.id_soft_cache = software_cache.id
    JOIN joinsoft
        ON softs.idsofts = joinsoft.soft_id
    JOIN teledis
        ON joinsoft.soft_id = teledis.idteledis WHERE software_cache.name LIKE '%XXX';