组合多个唯一的MySQL表并按一列排序

Question

我过去几天一直在尝试完成这个MySQL查询，运气很少。我想将这些多个表及其列组合在一起，然后按照它们共同的顺序排序（不是按名称，而是按内容）。我有以下数据库表：

mb_bans：

mb_ban_records：

mb_kicks：

mb_mutes：

mb_mutes_records：

mb_warnings：

我想要完成的是以下几点：

不幸的是，我更加难以理解如何将这些MySQL表组合在一起，同时又将它们保存在不同的类别中 - 按每个表中的_time列排序。我该如何处理？我尝试检索它们一直都没有成功。我能得到的最接近的是只组合每个列的_time列，然后在查询中给它一个值＆＃34; date＆＃34;但是我做不了多少结果。我仍然需要将其称为单独的行，对吗？我可以使用fetchAll，但后来我无法在值中添加任何东西..

$banq = $db->prepare('SELECT banned, banned_by, ban_reason, ban_time, ban_expires_on FROM '.BAN_TABLE.' ORDER BY ban_time DESC');
$kickq = $db->prepare('SELECT kicked, kicked_by, kick_reason, kick_time FROM '.KICK_TABLE.' ORDER BY kick_time DESC');
$muteq = $db->prepare('SELECT muted, muted_by, mute_reason, mute_time, mute_expires_on FROM '.MUTE_TABLE.' ORDER BY mute_time DESC');
$warnq = $db->prepare('SELECT warned, warned_by, warn_reason, warn_time FROM '.WARN_TABLE.' ORDER BY warn_time DESC');
$banq->execute();
$kickq->execute();
$muteq->execute();
$warnq->execute();

基本上我希望将所有这些查询组合为一个+两个_record表。非常感谢任何可以帮助我的建议，因为我花了无数个小时试图自己解决这个问题。

提前致谢！

Answer 1

试试这个：

SELECT * from (
SELECT banned as Punisher, banned_by as Punished, ban_reason as Reason, ban_expires_on  as Expire, ban_time as Date  FROM mb_bans 
UNION
SELECT kicked as Punisher, kicked_by as Punished, kick_reason as Reason, NULL  as Expire, kick_time as Date FROM mb_kicks 
UNION
SELECT muted as Punisher, muted_by as Punished, mute_reason as Reason, mute_expires_on  as Expire, mute_time as Date  FROM mb_mutes 
UNION
SELECT warned as Punisher, warned_by as Punished, warn_reason as Reason, NULL  as Expire,  warn_time as Date FROM mb_warnings
) d order by d.Date DESC;

修改

我怎样才能获得记录类型？（IE。返回的结果是来自禁止表，静音表，踢表等）。

SELECT * from (
    SELECT banned as Punisher, banned_by as Punished, ban_reason as Reason, ban_expires_on  as Expire, 'ban' as TableType, ban_time as Date  FROM mb_bans 
    UNION
    SELECT kicked as Punisher, kicked_by as Punished, kick_reason as Reason, NULL  as Expire, 'kick' as TableType, kick_time as Date FROM mb_kicks 
    UNION
    SELECT muted as Punisher, muted_by as Punished, mute_reason as Reason, mute_expires_on  as Expire, 'mute' as TableType, mute_time as Date  FROM mb_mutes 
    UNION
    SELECT warned as Punisher, warned_by as Punished, warn_reason as Reason, NULL  as Expire,  'warn' as TableType, warn_time as Date FROM mb_warnings
    ) d order by d.Date DESC;

Answer 2

这个问题的通用答案是，

SELECT A.COL, B. COL, C.COL
FROM TABLE1 AS 'A'
INNER JOIN TABLE2 AS 'B' WHERE A.ID = B.ID
INNER JOIN TABLE3 AS 'C' WHERE B.ID = C.ID
.
.
.
<YOU CAN PUT AS MUCH AS JOINS YOU WANT>
ORDER BY <REQUIRED_COL>

现在，在你的巨大场景中这样做。