Mysql：日付を基準にして1つの列のみを一致させる5つの異なるテーブルから選択する

Question

私は5つのテーブルtable1、table2、table3、table4、table5を持っています。 5つはすべて異なるテーブルです。すべてのテーブルには自動増分IDがあります。 'thor_id'、 'iron_id'、 'wonder_id'、 'hulk_id'、 'spider_id'（自動インクリメントIDではない）のような異なる名前を持つすべてのテーブルに1つの列があります。 4つのテーブルすべてに日付（日付のみ）の列があります。 1つのテーブルにdatetime（2017-09-06 09:09:09 - 重複しない）があり、重複した* id（これも必要です）があります。

* idと特定の日付または2つの日付の間に基づいて5つのテーブルすべてからデータを取得したいとします。だから、結果セットは、1つの日付について のように試してみました

|date  | t1.id | t1.date | t1.amt | t2.id |t2.date |t2.amt |t3.id | t3.date | t3.amt | t4.id | t4.date | t4.amt |t5.id | t5.date |t5.amt | 
|-----------|-------|-----------|--------|-------|-----------|-------|------|----------|--------|-------|----------|--------|------|----------|-------| 
|2017-09-06 | 2341 |2017-09-06 | 10000 | null | null  |null |2341 |2017-09-06| 100000 | null | null | null | 2341 |2017-09-06|200000 | 
|2017-09-07 | 2341 |2017-09-07 | 90000 | null | null  |null |2341 |2017-09-07| 300000 | 2341 |2017-09-07| 1000 | 2341 |2017-09-07|500000 | 
|2017-09-09 | null |null  | null | 2341 | 2017-09-09|200000 |2341 |2017-09-07| 300000 | null | null | null | 2341 |2017-09-07|500000 | 

1.Iは日付

select t1_date,t1_id,t1_amt,t2_date,t2_id,t_amt from t1 inner join t2 where date(t2_date)='2017-09-06' and t2_id='9106' and t1_date='2017-09-06' and t1_id='9106'; 

2.Iするために2つのテーブルを試してみました

|date  | t1.id | t1.date | t1.amt | t2.id |t2.date |t2.amt |t3.id | t3.date | t3.amt | t4.id | t4.date | t4.amt |t5.id | t5.date |t5.amt | 
|----------|-------|-----------|--------|-------|--------|-------|------|----------|--------|-------|---------|--------|------|----------|-------| 
|2017-09-06| 2341 |2017-09-06 | 10000 | null | null |null |2341 |2017-09-06| 100000 | null | null | null | 2341 |2017-09-06|200000 | 

2の間の日付でなければなりません同じ2つのテーブルを使用して2つの日付間でデータを検索します。

select t1_date,t1_id,t1_load_amt,t2_date,t2_id,t_total from t1 inner join t2 where date(t2_date) between '2017-09-06' and '2017-09-30' and t2_id='9106' and t1_date between '2017-09-06' and '2017-09-30' and t1_id='9106'; 

No.1は予想される出力を示しますが、3つの他のテーブルを追加すると結果セットは空です。 N0.2レコードの重複行がNULLではなく作成されます。 SQLに慣れていなくても、助けていただければ幸いです。 ありがとうございます。

Answer 1

編集：私の悪い、私はIDの部分を逃したと思います。

これが当てはまる場合、私の初期の解決策ははるかに良い答えにはなりませんか？

SELECT 't1' AS in_table, t1.id AS id, t1.datetime, t1.amt 
FROM tb1 t1 WHERE t1.id = 2341 AND t1.datetime BETWEEN '2017-09-06' AND '2017-09-09' 
UNION ALL 
SELECT 't2' AS in_table, t2.id AS id, t2.datetime, t2.amt 
FROM tb2 t2 WHERE t2.id = 2341 AND t2.datetime BETWEEN '2017-09-06' AND '2017-09-09' 
UNION ALL 
SELECT 't3' AS in_table, t3.id AS id, t3.datetime, t3.amt 
FROM tb3 t3 WHERE t3.id = 2341 AND t3.datetime BETWEEN '2017-09-06' AND '2017-09-09' 
UNION ALL 
SELECT 't4' AS in_table, t4.id AS id, t4.datetime, t4.amt 
FROM tb4 t4 WHERE t4.id = 2341 AND t4.datetime BETWEEN '2017-09-06' AND '2017-09-09' 
UNION ALL 
SELECT 't5' AS in_table, t5.id AS id, t5.datetime, t5.amt 
FROM tb5 t5 WHERE t5.id = 2341 AND t5.datetime BETWEEN '2017-09-06' AND '2017-09-09' 

-----------------------旧----------------以下は編集-------

EDIT：JUST警告され、これはONE UGLY MESSは、非常にUGLY HACKすべての

まず、サンプルの結果を使用することです：基本的にhttp://rextester.com/NFP12823

、私はFULL OUTER JOINの力を利用し、このようなものを作りました。

SELECT COALESCE(t1.datetime, tbl.datetime_index) AS datetime_index, t1.id as t1_id, t1.datetime as t1_datetime, t1.amt as t1_amt, tbl.t2_id as t2_id, tbl.t2_datetime as t2_datetime, tbl.t2_amt as t2_amt, tbl.t3_id as t3_id, tbl.t3_datetime as t3_datetime, tbl.t3_amt as t3_amt, tbl.t4_id as t4_id, tbl.t4_datetime as t4_datetime, tbl.t4_amt as t4_amt, tbl.t5_id as t5_id, tbl.t5_datetime as t5_datetime, tbl.t5_amt as t5_amt 
FROM tb1 t1 
FULL OUTER JOIN (
    SELECT COALESCE(t2.datetime, tbl.datetime_index) AS datetime_index, t2.id as t2_id, t2.datetime as t2_datetime, t2.amt as t2_amt, tbl.t3_id as t3_id, tbl.t3_datetime as t3_datetime, tbl.t3_amt as t3_amt, tbl.t4_id as t4_id, tbl.t4_datetime as t4_datetime, tbl.t4_amt as t4_amt, tbl.t5_id as t5_id, tbl.t5_datetime as t5_datetime, tbl.t5_amt as t5_amt 
    FROM tb2 t2 
    FULL OUTER JOIN (
     SELECT COALESCE(t3.datetime, tbl.datetime_index) AS datetime_index, t3.id as t3_id, t3.datetime as t3_datetime, t3.amt as t3_amt, tbl.t4_id as t4_id, tbl.t4_datetime as t4_datetime, tbl.t4_amt as t4_amt, tbl.t5_id as t5_id, tbl.t5_datetime as t5_datetime, tbl.t5_amt as t5_amt 
     FROM tb3 t3 
     FULL OUTER JOIN (
      SELECT COALESCE(t4.datetime, t5.datetime) AS datetime_index, t4.id as t4_id, t4.datetime as t4_datetime, t4.amt as t4_amt, t5.id as t5_id, t5.datetime as t5_datetime, t5.amt as t5_amt 
      FROM tb4 t4 
      FULL OUTER JOIN tb5 t5 
      ON t4.datetime = t5.datetime 
     ) tbl 
     ON t3.datetime = tbl.datetime_index 
    ) tbl 
    ON t2.datetime = tbl.datetime_index 
)tbl 
ON t1.datetime = tbl.datetime_index 

だから、中心から始まる、私はT4とT5に入社し、あなたの主な目標は、時間にベースを検索することがあるため、私は、共通のインデックスdatetime_indexを作成しました。 joinでは、一致する日付またはnull（一致しない場合）が返されるため、coalesceを使用すると最初のnull以外の値が返されるため、t4の日付またはt5の日付になります。このプロセスを3回以上繰り返すことで、以前に生成されたテーブルの上にそれぞれ、あなたが望むもののような完全な最終テーブルが得られます。

注： FULL OUTER JOINはMySQLではサポートされていません。これを解決するには別のハックを探したり、別のSQLサーバー（PostgreSQLを使用しました）を使用する必要があります。

EDIT2：ここではMySQLの等価バージョンがだ - http://rextester.com/FKMS97691

SELECT COALESCE(tbl.t1_datetime, tbl.datetime_index) AS datetime_index, tbl.t1_id as t1_id, tbl.t1_datetime as t1_datetime, tbl.t1_amt as t1_amt,tbl.t2_id as t2_id, tbl.t2_datetime as t2_datetime, tbl.t2_amt as t2_amt, tbl.t3_id as t3_id, tbl.t3_datetime as t3_datetime, tbl.t3_amt as t3_amt, tbl.t4_id as t4_id, tbl.t4_datetime as t4_datetime, tbl.t4_amt as t4_amt, tbl.t5_id as t5_id, tbl.t5_datetime as t5_datetime, tbl.t5_amt as t5_amt 
FROM (SELECT tmptbl.datetime_index, t1.id as t1_id, t1.datetime as t1_datetime, t1.amt as t1_amt,tmptbl.t2_id as t2_id, tmptbl.t2_datetime as t2_datetime, tmptbl.t2_amt as t2_amt, tmptbl.t3_id as t3_id, tmptbl.t3_datetime as t3_datetime, tmptbl.t3_amt as t3_amt, tmptbl.t4_id as t4_id, tmptbl.t4_datetime as t4_datetime, tmptbl.t4_amt as t4_amt, tmptbl.t5_id as t5_id, tmptbl.t5_datetime as t5_datetime, tmptbl.t5_amt as t5_amt 
     FROM tb1 t1 LEFT JOIN (
      SELECT COALESCE(tbl.t2_datetime, tbl.datetime_index) AS datetime_index, tbl.t2_id as t2_id, tbl.t2_datetime as t2_datetime, tbl.t2_amt as t2_amt, tbl.t3_id as t3_id, tbl.t3_datetime as t3_datetime, tbl.t3_amt as t3_amt, tbl.t4_id as t4_id, tbl.t4_datetime as t4_datetime, tbl.t4_amt as t4_amt, tbl.t5_id as t5_id, tbl.t5_datetime as t5_datetime, tbl.t5_amt as t5_amt 
      FROM (SELECT tmptbl.datetime_index, t2.id as t2_id, t2.datetime as t2_datetime, t2.amt as t2_amt,tmptbl.t3_id as t3_id, tmptbl.t3_datetime as t3_datetime, tmptbl.t3_amt as t3_amt, tmptbl.t4_id as t4_id, tmptbl.t4_datetime as t4_datetime, tmptbl.t4_amt as t4_amt, tmptbl.t5_id as t5_id, tmptbl.t5_datetime as t5_datetime, tmptbl.t5_amt as t5_amt 
        FROM tb2 t2 LEFT JOIN (
         SELECT COALESCE(tbl.t3_datetime, tbl.datetime_index) AS datetime_index, tbl.t3_id as t3_id, tbl.t3_datetime as t3_datetime, tbl.t3_amt as t3_amt, tbl.t4_id as t4_id, tbl.t4_datetime as t4_datetime, tbl.t4_amt as t4_amt, tbl.t5_id as t5_id, tbl.t5_datetime as t5_datetime, tbl.t5_amt as t5_amt 
         FROM (SELECT tmptbl.datetime_index, t3.id as t3_id, t3.datetime as t3_datetime, t3.amt as t3_amt, tmptbl.t4_id as t4_id, tmptbl.t4_datetime as t4_datetime, tmptbl.t4_amt as t4_amt, tmptbl.t5_id as t5_id, tmptbl.t5_datetime as t5_datetime, tmptbl.t5_amt as t5_amt 
           FROM tb3 t3 LEFT JOIN (
            SELECT COALESCE(tbl.t4_datetime, tbl.t5_datetime) AS datetime_index, tbl.t4_id as t4_id, tbl.t4_datetime as t4_datetime, tbl.t4_amt as t4_amt, tbl.t5_id as t5_id, tbl.t5_datetime as t5_datetime, tbl.t5_amt as t5_amt 
            FROM (SELECT t4.id as t4_id, t4.datetime as t4_datetime, t4.amt as t4_amt, t5.id as t5_id, t5.datetime as t5_datetime, t5.amt as t5_amt 
              FROM tb4 t4 LEFT JOIN tb5 t5 ON t4.datetime = t5.datetime 
              UNION 
              SELECT t4.id as t4_id, t4.datetime as t4_datetime, t4.amt as t4_amt, t5.id as t5_id, t5.datetime as t5_datetime, t5.amt as t5_amt 
              FROM tb4 t4 RIGHT JOIN tb5 t5 ON t4.datetime = t5.datetime) tbl 
           ) tmptbl ON t3.datetime = tmptbl.datetime_index 
           UNION 
           SELECT tmptbl.datetime_index, t3.id as t3_id, t3.datetime as t3_datetime, t3.amt as t3_amt, tmptbl.t4_id as t4_id, tmptbl.t4_datetime as t4_datetime, tmptbl.t4_amt as t4_amt, tmptbl.t5_id as t5_id, tmptbl.t5_datetime as t5_datetime, tmptbl.t5_amt as t5_amt 
           FROM tb3 t3 RIGHT JOIN (
            SELECT COALESCE(tbl.t4_datetime, tbl.t5_datetime) AS datetime_index, tbl.t4_id as t4_id, tbl.t4_datetime as t4_datetime, tbl.t4_amt as t4_amt, tbl.t5_id as t5_id, tbl.t5_datetime as t5_datetime, tbl.t5_amt as t5_amt 
            FROM (SELECT t4.id as t4_id, t4.datetime as t4_datetime, t4.amt as t4_amt, t5.id as t5_id, t5.datetime as t5_datetime, t5.amt as t5_amt 
              FROM tb4 t4 LEFT JOIN tb5 t5 ON t4.datetime = t5.datetime 
              UNION 
              SELECT t4.id as t4_id, t4.datetime as t4_datetime, t4.amt as t4_amt, t5.id as t5_id, t5.datetime as t5_datetime, t5.amt as t5_amt 
              FROM tb4 t4 RIGHT JOIN tb5 t5 ON t4.datetime = t5.datetime) tbl 
           ) tmptbl ON t3.datetime = tmptbl.datetime_index) tbl 
        ) tmptbl ON t2.datetime = tmptbl.datetime_index 
        UNION 
        SELECT tmptbl.datetime_index, t2.id as t2_id, t2.datetime as t2_datetime, t2.amt as t2_amt, tmptbl.t3_id as t3_id, tmptbl.t3_datetime as t3_datetime, tmptbl.t3_amt as t3_amt, tmptbl.t4_id as t4_id, tmptbl.t4_datetime as t4_datetime, tmptbl.t4_amt as t4_amt, tmptbl.t5_id as t5_id, tmptbl.t5_datetime as t5_datetime, tmptbl.t5_amt as t5_amt 
        FROM tb2 t2 RIGHT JOIN (
         SELECT COALESCE(tbl.t3_datetime, tbl.datetime_index) AS datetime_index, tbl.t3_id as t3_id, tbl.t3_datetime as t3_datetime, tbl.t3_amt as t3_amt, tbl.t4_id as t4_id, tbl.t4_datetime as t4_datetime, tbl.t4_amt as t4_amt, tbl.t5_id as t5_id, tbl.t5_datetime as t5_datetime, tbl.t5_amt as t5_amt 
         FROM (SELECT tmptbl.datetime_index, t3.id as t3_id, t3.datetime as t3_datetime, t3.amt as t3_amt, tmptbl.t4_id as t4_id, tmptbl.t4_datetime as t4_datetime, tmptbl.t4_amt as t4_amt, tmptbl.t5_id as t5_id, tmptbl.t5_datetime as t5_datetime, tmptbl.t5_amt as t5_amt 
           FROM tb3 t3 LEFT JOIN (
            SELECT COALESCE(tbl.t4_datetime, tbl.t5_datetime) AS datetime_index, tbl.t4_id as t4_id, tbl.t4_datetime as t4_datetime, tbl.t4_amt as t4_amt, tbl.t5_id as t5_id, tbl.t5_datetime as t5_datetime, tbl.t5_amt as t5_amt 
            FROM (SELECT t4.id as t4_id, t4.datetime as t4_datetime, t4.amt as t4_amt, t5.id as t5_id, t5.datetime as t5_datetime, t5.amt as t5_amt 
              FROM tb4 t4 LEFT JOIN tb5 t5 ON t4.datetime = t5.datetime 
              UNION 
              SELECT t4.id as t4_id, t4.datetime as t4_datetime, t4.amt as t4_amt, t5.id as t5_id, t5.datetime as t5_datetime, t5.amt as t5_amt 
              FROM tb4 t4 RIGHT JOIN tb5 t5 ON t4.datetime = t5.datetime) tbl 
           ) tmptbl ON t3.datetime = tmptbl.datetime_index 
           UNION 
           SELECT tmptbl.datetime_index, t3.id as t3_id, t3.datetime as t3_datetime, t3.amt as t3_amt, tmptbl.t4_id as t4_id, tmptbl.t4_datetime as t4_datetime, tmptbl.t4_amt as t4_amt, tmptbl.t5_id as t5_id, tmptbl.t5_datetime as t5_datetime, tmptbl.t5_amt as t5_amt 
           FROM tb3 t3 RIGHT JOIN (
            SELECT COALESCE(tbl.t4_datetime, tbl.t5_datetime) AS datetime_index, tbl.t4_id as t4_id, tbl.t4_datetime as t4_datetime, tbl.t4_amt as t4_amt, tbl.t5_id as t5_id, tbl.t5_datetime as t5_datetime, tbl.t5_amt as t5_amt 
            FROM (SELECT t4.id as t4_id, t4.datetime as t4_datetime, t4.amt as t4_amt, t5.id as t5_id, t5.datetime as t5_datetime, t5.amt as t5_amt 
              FROM tb4 t4 LEFT JOIN tb5 t5 ON t4.datetime = t5.datetime 
              UNION 
              SELECT t4.id as t4_id, t4.datetime as t4_datetime, t4.amt as t4_amt, t5.id as t5_id, t5.datetime as t5_datetime, t5.amt as t5_amt 
              FROM tb4 t4 RIGHT JOIN tb5 t5 ON t4.datetime = t5.datetime) tbl 
           ) tmptbl ON t3.datetime = tmptbl.datetime_index) tbl 
        ) tmptbl ON t2.datetime = tmptbl.datetime_index) tbl 
     ) tmptbl ON t1.datetime = tmptbl.datetime_index 
     UNION 
     SELECT tmptbl.datetime_index, t1.id as t1_id, t1.datetime as t1_datetime, t1.amt as t1_amt, tmptbl.t2_id as t2_id, tmptbl.t2_datetime as t2_datetime, tmptbl.t2_amt as t2_amt, tmptbl.t3_id as t3_id, tmptbl.t3_datetime as t3_datetime, tmptbl.t3_amt as t3_amt, tmptbl.t4_id as t4_id, tmptbl.t4_datetime as t4_datetime, tmptbl.t4_amt as t4_amt, tmptbl.t5_id as t5_id, tmptbl.t5_datetime as t5_datetime, tmptbl.t5_amt as t5_amt 
     FROM tb1 t1 RIGHT JOIN (
      SELECT COALESCE(tbl.t2_datetime, tbl.datetime_index) AS datetime_index, tbl.t2_id as t2_id, tbl.t2_datetime as t2_datetime, tbl.t2_amt as t2_amt, tbl.t3_id as t3_id, tbl.t3_datetime as t3_datetime, tbl.t3_amt as t3_amt, tbl.t4_id as t4_id, tbl.t4_datetime as t4_datetime, tbl.t4_amt as t4_amt, tbl.t5_id as t5_id, tbl.t5_datetime as t5_datetime, tbl.t5_amt as t5_amt 
      FROM (SELECT tmptbl.datetime_index, t2.id as t2_id, t2.datetime as t2_datetime, t2.amt as t2_amt,tmptbl.t3_id as t3_id, tmptbl.t3_datetime as t3_datetime, tmptbl.t3_amt as t3_amt, tmptbl.t4_id as t4_id, tmptbl.t4_datetime as t4_datetime, tmptbl.t4_amt as t4_amt, tmptbl.t5_id as t5_id, tmptbl.t5_datetime as t5_datetime, tmptbl.t5_amt as t5_amt 
        FROM tb2 t2 LEFT JOIN (
         SELECT COALESCE(tbl.t3_datetime, tbl.datetime_index) AS datetime_index, tbl.t3_id as t3_id, tbl.t3_datetime as t3_datetime, tbl.t3_amt as t3_amt, tbl.t4_id as t4_id, tbl.t4_datetime as t4_datetime, tbl.t4_amt as t4_amt, tbl.t5_id as t5_id, tbl.t5_datetime as t5_datetime, tbl.t5_amt as t5_amt 
         FROM (SELECT tmptbl.datetime_index, t3.id as t3_id, t3.datetime as t3_datetime, t3.amt as t3_amt, tmptbl.t4_id as t4_id, tmptbl.t4_datetime as t4_datetime, tmptbl.t4_amt as t4_amt, tmptbl.t5_id as t5_id, tmptbl.t5_datetime as t5_datetime, tmptbl.t5_amt as t5_amt 
           FROM tb3 t3 LEFT JOIN (
            SELECT COALESCE(tbl.t4_datetime, tbl.t5_datetime) AS datetime_index, tbl.t4_id as t4_id, tbl.t4_datetime as t4_datetime, tbl.t4_amt as t4_amt, tbl.t5_id as t5_id, tbl.t5_datetime as t5_datetime, tbl.t5_amt as t5_amt 
            FROM (SELECT t4.id as t4_id, t4.datetime as t4_datetime, t4.amt as t4_amt, t5.id as t5_id, t5.datetime as t5_datetime, t5.amt as t5_amt 
              FROM tb4 t4 LEFT JOIN tb5 t5 ON t4.datetime = t5.datetime 
              UNION 
              SELECT t4.id as t4_id, t4.datetime as t4_datetime, t4.amt as t4_amt, t5.id as t5_id, t5.datetime as t5_datetime, t5.amt as t5_amt 
              FROM tb4 t4 RIGHT JOIN tb5 t5 ON t4.datetime = t5.datetime) tbl 
           ) tmptbl ON t3.datetime = tmptbl.datetime_index 
           UNION 
           SELECT tmptbl.datetime_index, t3.id as t3_id, t3.datetime as t3_datetime, t3.amt as t3_amt, tmptbl.t4_id as t4_id, tmptbl.t4_datetime as t4_datetime, tmptbl.t4_amt as t4_amt, tmptbl.t5_id as t5_id, tmptbl.t5_datetime as t5_datetime, tmptbl.t5_amt as t5_amt 
           FROM tb3 t3 RIGHT JOIN (
            SELECT COALESCE(tbl.t4_datetime, tbl.t5_datetime) AS datetime_index, tbl.t4_id as t4_id, tbl.t4_datetime as t4_datetime, tbl.t4_amt as t4_amt, tbl.t5_id as t5_id, tbl.t5_datetime as t5_datetime, tbl.t5_amt as t5_amt 
            FROM (SELECT t4.id as t4_id, t4.datetime as t4_datetime, t4.amt as t4_amt, t5.id as t5_id, t5.datetime as t5_datetime, t5.amt as t5_amt 
              FROM tb4 t4 LEFT JOIN tb5 t5 ON t4.datetime = t5.datetime 
              UNION 
              SELECT t4.id as t4_id, t4.datetime as t4_datetime, t4.amt as t4_amt, t5.id as t5_id, t5.datetime as t5_datetime, t5.amt as t5_amt 
              FROM tb4 t4 RIGHT JOIN tb5 t5 ON t4.datetime = t5.datetime) tbl 
           ) tmptbl ON t3.datetime = tmptbl.datetime_index) tbl 
        ) tmptbl ON t2.datetime = tmptbl.datetime_index 
        UNION 
        SELECT tmptbl.datetime_index, t2.id as t2_id, t2.datetime as t2_datetime, t2.amt as t2_amt, tmptbl.t3_id as t3_id, tmptbl.t3_datetime as t3_datetime, tmptbl.t3_amt as t3_amt, tmptbl.t4_id as t4_id, tmptbl.t4_datetime as t4_datetime, tmptbl.t4_amt as t4_amt, tmptbl.t5_id as t5_id, tmptbl.t5_datetime as t5_datetime, tmptbl.t5_amt as t5_amt 
        FROM tb2 t2 RIGHT JOIN (
         SELECT COALESCE(tbl.t3_datetime, tbl.datetime_index) AS datetime_index, tbl.t3_id as t3_id, tbl.t3_datetime as t3_datetime, tbl.t3_amt as t3_amt, tbl.t4_id as t4_id, tbl.t4_datetime as t4_datetime, tbl.t4_amt as t4_amt, tbl.t5_id as t5_id, tbl.t5_datetime as t5_datetime, tbl.t5_amt as t5_amt 
         FROM (SELECT tmptbl.datetime_index, t3.id as t3_id, t3.datetime as t3_datetime, t3.amt as t3_amt, tmptbl.t4_id as t4_id, tmptbl.t4_datetime as t4_datetime, tmptbl.t4_amt as t4_amt, tmptbl.t5_id as t5_id, tmptbl.t5_datetime as t5_datetime, tmptbl.t5_amt as t5_amt 
           FROM tb3 t3 LEFT JOIN (
            SELECT COALESCE(tbl.t4_datetime, tbl.t5_datetime) AS datetime_index, tbl.t4_id as t4_id, tbl.t4_datetime as t4_datetime, tbl.t4_amt as t4_amt, tbl.t5_id as t5_id, tbl.t5_datetime as t5_datetime, tbl.t5_amt as t5_amt 
            FROM (SELECT t4.id as t4_id, t4.datetime as t4_datetime, t4.amt as t4_amt, t5.id as t5_id, t5.datetime as t5_datetime, t5.amt as t5_amt 
              FROM tb4 t4 LEFT JOIN tb5 t5 ON t4.datetime = t5.datetime 
              UNION 
              SELECT t4.id as t4_id, t4.datetime as t4_datetime, t4.amt as t4_amt, t5.id as t5_id, t5.datetime as t5_datetime, t5.amt as t5_amt 
              FROM tb4 t4 RIGHT JOIN tb5 t5 ON t4.datetime = t5.datetime) tbl 
           ) tmptbl ON t3.datetime = tmptbl.datetime_index 
           UNION 
           SELECT tmptbl.datetime_index, t3.id as t3_id, t3.datetime as t3_datetime, t3.amt as t3_amt, tmptbl.t4_id as t4_id, tmptbl.t4_datetime as t4_datetime, tmptbl.t4_amt as t4_amt, tmptbl.t5_id as t5_id, tmptbl.t5_datetime as t5_datetime, tmptbl.t5_amt as t5_amt 
           FROM tb3 t3 RIGHT JOIN (
            SELECT COALESCE(tbl.t4_datetime, tbl.t5_datetime) AS datetime_index, tbl.t4_id as t4_id, tbl.t4_datetime as t4_datetime, tbl.t4_amt as t4_amt, tbl.t5_id as t5_id, tbl.t5_datetime as t5_datetime, tbl.t5_amt as t5_amt 
            FROM (SELECT t4.id as t4_id, t4.datetime as t4_datetime, t4.amt as t4_amt, t5.id as t5_id, t5.datetime as t5_datetime, t5.amt as t5_amt 
              FROM tb4 t4 LEFT JOIN tb5 t5 ON t4.datetime = t5.datetime 
              UNION 
              SELECT t4.id as t4_id, t4.datetime as t4_datetime, t4.amt as t4_amt, t5.id as t5_id, t5.datetime as t5_datetime, t5.amt as t5_amt 
              FROM tb4 t4 RIGHT JOIN tb5 t5 ON t4.datetime = t5.datetime) tbl 
           ) tmptbl ON t3.datetime = tmptbl.datetime_index) tbl 
        ) tmptbl ON t2.datetime = tmptbl.datetime_index) tbl 
     ) tmptbl ON t1.datetime = tmptbl.datetime_index) tbl 

私は笑、これは1つの醜い混乱であると述べたのはこのためです。