2つのサブクエリを持つクエリを作成しようとしています。クエリは個別に実行すると機能しますが、すべてをまとめると、目的の結果セットが得られません。最小限の例を挙げてみます。
主な質問：
mysql> select target_name_id, ep, count(*), count(distinct wafer_id)
from data_cst
where target_name_id = 155609
and data_cst.date_time BETWEEN '2012-06-23 00:00:00' AND '2012-08-23 23:59:59'
GROUP BY target_name_id, data_cst.ep;
+----------------+------+----------+--------------------------+
| target_name_id | ep | count(*) | count(distinct wafer_id) |
+----------------+------+----------+--------------------------+
| 155609 | Line | 4799 | 215 |
+----------------+------+----------+--------------------------+
1 row in set (0.05 sec)
最初のサブクエリ：
mysql> SELECT target_name_id,ep, wafer_id, AVG(bottom) as averages,
FROM data_cst
WHERE target_name_id = 155609
AND data_cst.date_time BETWEEN '2012-06-23 00:00:00' AND '2012-08-23 23:59:59'
GROUP BY target_name_id, ep, wafer_id;
+----------------+------+----------+------------+
| target_name_id | ep | wafer_id | averages |
+----------------+------+----------+------------+
| 155609 | Line | 401739 | 47.6236667 |
| 155609 | Line | 403041 | 47.3739167 |
| 155609 | Line | 408339 | 47.4901667 |
| 155609 | Line | 409683 | 48.3066250 |
| 155609 | Line | 409690 | 47.2402500 |
| 155609 | Line | 410249 | 47.3346667 |
| 155609 | Line | 410633 | 48.7373333 |
| 155609 | Line | 414000 | 48.1274167 |
.
.
.
215 rows in set (0.07 sec)
2番目のサブクエリ：
mysql> SELECT target_name_id, ep, data_file_id, lot_id, wafer_id,
date_time,
COUNT(DISTINCT target_name_id, ep, lot_id, data_file_id)-1 as reruns
FROM data_cst
WHERE target_name_id = 155609
AND data_cst.date_time BETWEEN '2012-06-23 00:00:00' AND '2012-08-23 23:59:59'
GROUP BY target_name_id, data_cst.ep, wafer_id
HAVING COUNT(DISTINCT target_name_id, ep, lot_id, data_file_id) > 1;
+----------------+------+--------------+--------+----------+---------------------+--------+
| target_name_id | ep | data_file_id | lot_id | wafer_id | date_time | reruns |
+----------------+------+--------------+--------+----------+---------------------+--------+
| 155609 | Line | 774 | 120804 | 403041 | 2012-07-06 03:51:50 | 1 |
| 155609 | Line | 6502 | 123109 | 409683 | 2012-07-16 05:10:04 | 1 |
| 155609 | Line | 749 | 120804 | 409690 | 2012-07-06 04:08:01 | 1 |
| 155609 | Line | 3319148 | 123484 | 410633 | 2012-07-07 09:12:20 | 5 |
| 155609 | Line | 8264 | 134609 | 414098 | 2012-07-03 11:34:12 | 5 |
| 155609 | Line | 3279867 | 124752 | 414245 | 2012-06-26 00:51:31 | 1
.
.
.
93 rows in set (0.06 sec)
これらをすべてまとめると、メインクエリからのカウント、2番目からの平均、3番目からの再実行列の合計が必要になります。私はこれを3日間いじっていますが、希望する結果を得るために適切な結合を思い付くことができません。私は合計、カウント、または平均を正しく出すことができましたが、すべてではありません3。これが私の最新の試みです。
mysql> select data_cst.target_name_id, data_cst.ep, count(*) as count,
count(distinct data_cst.wafer_id) as wafers,
avg(averages) as average, sum(reruns) as rerun
from data_cst,
(SELECT target_name_id,ep, wafer_id, AVG(bottom) as averages
FROM data_cst
WHERE target_name_id = 155609
AND data_cst.date_time BETWEEN '2012-06-23 00:00:00' AND '2012-08-23 23:59:59'
GROUP BY target_name_id, ep, wafer_id) q1,
(SELECT target_name_id, ep, data_file_id, lot_id, wafer_id,
date_time,
COUNT(DISTINCT target_name_id, ep, lot_id, data_file_id)-1 as reruns
FROM data_cst
WHERE target_name_id = 155609
AND data_cst.date_time BETWEEN '2012-06-23 00:00:00' AND '2012-08-23 23:59:59'
GROUP BY target_name_id, data_cst.ep, wafer_id
HAVING COUNT(DISTINCT target_name_id, ep, lot_id, data_file_id) > 1) r
where data_cst.target_name_id = 155609
AND data_cst.date_time BETWEEN '2012-06-23 00:00:00' AND '2012-08-23 23:59:59'
and data_cst.wafer_id = q1.wafer_id
GROUP BY target_name_id, data_cst.ep;
+----------------+------+--------+--------+----------------+--------+
| target_name_id | ep | count | wafers | average | rerun |
+----------------+------+--------+--------+----------------+--------+
| 155609 | Line | 446307 | 215 | 48.12877962148 | 724649 |
+----------------+------+--------+--------+----------------+--------+
1 row in set (23.56 sec)
この最も外側のwhere句では、ウェーハ数と平均は正しいですが、数と再実行は正しくありません。別のwhere句を使用して再実行を正しく行うことはできますが、カウントとウェーハが間違っています。さらに別の異なるwhere句を使用してカウントを正しくすることはできますが、再実行が間違っています。
私はこれを3日間いじっていますが、自分に合ったwhere句が見つかりません。
これは私の質問の更新です：
Gordon Linoffの提案に従ってクエリを変更しました。それ以来、クライアントは多くの新しい要件を追加し、それをクエリに組み込むことができました。しかし今、彼らは私がそれに取り組む方法を完全に理解することができないいくつかを追加しました。
私のクエリは次のようになります。
SELECT data_target.name as Target,
q1.ep as EP,
COUNT(*) as Wafers,
Lots,
SUM(numonep)/(COUNT(*)+SUM(CASE WHEN reruns > 0 THEN reruns ELSE 0 END)) as 'Sites/Wafer',
MAX(LastRun) as "Last Run",
SUM(CASE WHEN reruns > 0 THEN reruns ELSE 0 END) as Rerun,
COUNT(*)+SUM(CASE WHEN reruns > 0 THEN reruns ELSE 0 END) as Runs,
avgbottom as "Avg Bottom",
3*stdbottom as "3 Sig",
maxbottom as Max,
minbottom as Min,
SUM(numonep) as Count,
SUM(numonep) - SUM(numbottoms) as NAs,
100-((SUM(numonep) - SUM(numbottoms))/SUM(numonep)*100) as "% Success",
3*stdbottom/avgbottom as "3Sig/Avg",
AVG(avgbottom) as 'Wafer Avg',
AVG(Wafer3Sigma) as 'Wafer 3 Sigma',
AVG(Ranges) as 'Avg Range',
3*STD(Ranges) as '3Sig of Ranges',
MAX(Ranges) as 'Max Range',
MIN(Ranges) as 'Min Range',
(SUM(numonep) - SUM(numbottoms))/COUNT(*) as 'NAs/Wafer'
FROM (SELECT target_name_id,
ep,
wafer_id,
COUNT(bottom) as numbottoms,
AVG(bottom) as avgbottom,
STD(bottom) as stdbottom,
MAX(bottom) as maxbottom,
MIN(bottom) as minbottom,
MAX(date_time) as "LastRun",
COUNT(*) as numonep,
COUNT(DISTINCT target_name_id, ep, lot_id, data_file_id)-1 as reruns,
COUNT(DISTINCT(lot_id)) as Lots,
3*STD(bottom) as Wafer3Sigma,
MAX(bottom) - MIN(bottom) as Ranges
FROM data_cst
WHERE target_name_id IN (775, 776, 777, 778, 779, 780, 45, 44, 116, 117, 118, 119, 120, 121)
AND data_cst.date_time BETWEEN '2010-03-04 00:00:00' AND '2010-03-04 23:59:59'
GROUP BY target_name_id, ep, wafer_id
HAVING count(*) < 999) q1,
data_target
WHERE data_target.id = target_name_id
GROUP BY q1.target_name_id, q1.ep;
そして、これは完璧に機能します。しかし今、彼らは私に特定の列（image_measurer_id）を取得してもらいたいと思っています。各行は、bottom = Min（bottom）、bottom = Max（bottom）、Avg（bottom）に最も近いbottom、およびdate_time = Max（date_time）の行の下。
これは、この1つのクエリからでも可能ですか？