MySQL - 带有 RLIKE 和 GROUP BY 的 UNION SELECT - 无法插入 INNER JOIN答案

【问题标题】：MySQL - UNION SELECT with RLIKE and GROUP BY - not able to insert INNER JOINMySQL - 带有 RLIKE 和 GROUP BY 的 UNION SELECT - 无法插入 INNER JOIN
【发布时间】：2013-12-11 14:15:28
【问题描述】：

我创建了一个 mySQL 查询来搜索单词并按相关性（排序键）对结果进行排序。例如，如果我搜索“测试词”，我的查询将如下所示（它的作用就像一个魅力）：

SELECT * 
FROM (  SELECT *, 1 as SortKey 
        FROM equipments 
        WHERE (
            DESCRIPTION RLIKE '[[:<:]]test word[[:>:]]' 
            OR EQUIPMENT_ID RLIKE '[[:<:]]test word[[:>:]]' 
            OR CATEGORY RLIKE '[[:<:]]test word[[:>:]]'
        )

        UNION SELECT *, 2 as SortKey 
        FROM equipments 
        WHERE (
                (DESCRIPTION RLIKE '[[:<:]]test[[:>:]]' OR 
                EQUIPMENT_ID RLIKE '[[:<:]]test[[:>:]]' OR 
                CATEGORY RLIKE '[[:<:]]test[[:>:]]' OR 
                DESCRIPTION RLIKE '[[:<:]]tests[[:>:]]' OR 
                EQUIPMENT_ID RLIKE '[[:<:]]tests[[:>:]]' OR 
                CATEGORY RLIKE '[[:<:]]tests[[:>:]]') 

                AND

                (DESCRIPTION RLIKE '[[:<:]]word[[:>:]]' OR 
                EQUIPMENT_ID RLIKE '[[:<:]]word[[:>:]]' OR 
                CATEGORY RLIKE '[[:<:]]word[[:>:]]' OR 
                DESCRIPTION RLIKE '[[:<:]]words[[:>:]]' OR 
                EQUIPMENT_ID RLIKE '[[:<:]]words[[:>:]]' OR 
                CATEGORY RLIKE '[[:<:]]words[[:>:]]')
            )

        UNION SELECT *, 3 as SortKey 
        FROM equipments 
        WHERE (
                (DESCRIPTION RLIKE '[[:<:]]test[[:>:]]' OR 
                EQUIPMENT_ID RLIKE '[[:<:]]test[[:>:]]' OR 
                CATEGORY RLIKE '[[:<:]]test[[:>:]]' OR 
                DESCRIPTION RLIKE '[[:<:]]tests[[:>:]]' OR 
                EQUIPMENT_ID RLIKE '[[:<:]]tests[[:>:]]' OR 
                CATEGORY RLIKE '[[:<:]]tests[[:>:]]')
                ) 
                OR (
                (DESCRIPTION RLIKE '[[:<:]]word[[:>:]]' OR 
                EQUIPMENT_ID RLIKE '[[:<:]]word[[:>:]]' OR 
                CATEGORY RLIKE '[[:<:]]word[[:>:]]' OR 
                DESCRIPTION RLIKE '[[:<:]]words[[:>:]]' OR 
                EQUIPMENT_ID RLIKE '[[:<:]]words[[:>:]]' OR 
                CATEGORY RLIKE '[[:<:]]words[[:>:]]')
            )

) T1 GROUP BY EQUIPMENT_ID ORDER BY `SortKey` ASC

所以，正如我所说，它有效，但我想在我的查询中插入 INNER JOIN，我试图把它放在任何地方，但没有任何效果。通常，为了显示所有结果而不寻找关键字，我使用这个查询（再次，它工作正常）：

SELECT
    `equipments`.`DESCRIPTION`,
    `equipments`.`EQUIPMENT_ID`,
    `equipments`.`CATEGORY`,
    `live_data`.`SERVICE`,
    `live_data`.`HOURS` 
FROM equipments 
INNER JOIN customers ON `customers`.`EQUIPMENT_ID` = `equipments`.`EQUIPMENT_ID`
LEFT JOIN live_data ON `live_data`.`EQUIPMENT_ID` = `equipments`.`EQUIPMENT_ID`
WHERE `customers`.`customer_id` = 1

我需要插入 INNER JOIN 来添加 WHERE 语句以仅搜索到客户的设备。请帮帮我！

【问题讨论】：

标签： mysql group-by left-join inner-join union

【解决方案1】：

select innerresult.* From
( Insert your query here ) innerresult
inner join customers On customers.equipment_id = innerresult.equipment_id
Where customers.customer_id = 1

我认为应该这样做。

【讨论】：

谢谢！这正是我需要的！
经过反思，我还需要从“live_data”表中获取“SERVICE”和“HOURS”值。我在 INNER JOIN 行和 WHERE 行之间添加了行“LEFT JOIN live_data ON live_data.EQUIPMENT_ID = innerresult.EQUIPMENT_ID”，但我不知道如何选择“服务”和“小时”......我尝试了一些事情，但这并不成功...
就是这样！非常感谢！！