1. ホーム
  2. 質問と答え
  3. ブール型UNION ALLコード（MYSQL）

ブール型UNION ALLコード（MYSQL）

2017-01-12 10 views
0

私は自分でSQLを教えています。私はこのデータをTableauで可視化しています。作成しているビューが非常に遅くなり、必要なすべての情報をテーブルに作成しなければなりませんでした（毎日リフレッシュ）。ブール型UNION ALLコード（MYSQL）

私がここで実行しているUNION ALLステートメントの膨大な数に起因すると思います。私は、それぞれの質問がDB内のそれ自身の列ではなく、むしろ各行の属性であるように、データを「ピボット」するためにこれをやっています。

誰でもコードを再構成してスピードアップする方法について、いくつかのヒントを提供できますか？ 何か助けや批判に感謝します、ありがとう！ （以下は、私のコードのちょうどsnippit、すべてのブロックが続くUNIONの数です....

これは、UNION句であるクエリのいくつかのように見えます 
CREATE ALGORITHM=UNDEFINED 
[email protected] 
SQL SECURITY DEFINER 
VIEW view_data435386_xxxxx_MASTER AS 


SELECT _data435386_xxxxx_1_job_profile.ID AS ID, 
_data435386_xxxxx_1_job_profile.ID AS Comment_Photos_ID, 
'Job Profile' AS Impact_Area, 
_data435386_xxxxx_1_job_profile.PARENT_RECORD_ID AS PARENT_RECORD_ID, 
_data435386_xxxxx_1_job_profile.pjq1 AS PJQ1, 
_data435386_xxxxx_1_job_profile.pjq_2 AS PJQ2, 
_data435386_xxxxx_1_job_profile.pjq_3 AS PJQ3, 
_data435386_xxxxx_1_job_profile.pjq_4 AS PJQ4, 
_data435386_xxxxx_1_job_profile.pjq_5 AS PJQ5, 
_data435386_xxxxx_1_job_profile.pjq_6 AS PJQ6, 
_data435386_xxxxx_1_job_profile.pjq_7 AS PJQ7, 
_data435386_xxxxx_1_job_profile.pjq_8 AS PJQ8, 
_data435386_xxxxx_1_job_profile.pjq_9 AS PJQ9, 
_data435386_xxxxx_1_job_profile.pjq_10 AS PJQ10, 
_data435386_xxxxx_main_form.additional_comments AS Additional_Comments, 
_data435386_xxxxx_main_form.wr_, 
NULL AS Completion_Due_Date, 
NULL AS Completion_Due_Date_1443, 
NULL AS Training_Needed, 
NULL AS Follow_Up_Description, 
REPLACE(_data435386_xxxxx_main_form.inspector, '_', ' ') AS Inspector, 
REPLACE(_data435386_xxxxx_main_form.crew_leader, '_', ' ') AS Crew_Leader, 
_data435386_xxxxx_main_form.date1 AS date1, 
REPLACE(_data435386_xxxxx_1_job_profile.district, '_', ' ') AS District, 
REPLACE(_data435386_xxxxx_1_job_profile.division, '_', ' ') AS Division, 
REPLACE(_data435386_xxxxx_1_job_profile.contractor_inspected, '_', ' ') AS Contractor_Inspected, 
301 Sample_Size_Req, 
     (CASE 
      WHEN 
       (_data435386_xxxxx_1_job_profile.division = 'xxxxx') 
      THEN 
       38197 
      WHEN 
       (_data435386_xxxxx_1_job_profile.division = 'xxxxx') 
      THEN 
       3734 
      WHEN 
       (_data435386_xxxxx_1_job_profile.division = 'xxxxx') 
      THEN 
       5044 
      WHEN 
       (_data435386_xxxxx_1_job_profile.division = 'xxxxx') 
      THEN 
       55214 
      WHEN 
       (_data435386_xxxxx_1_job_profile.division = 'xxxxx') 
      THEN 
       37742 
      ELSE NULL 
     END) AS Population_size, 
'1_Job Profile' AS Results, 
3438545 AS Parent_Page_ID, 
'1.0 Job Profile' AS Task, 
'1.0 Job Profile' AS Construction_Activity, 
NULL AS Overall_Rating, 
CONCAT('https://xxxxx.xxxxx.com/exzact/dataPDF.php?TABLE_NAME=_data435386_xxxxx_main_form&ID=', 
       `_data435386_xxxxx_main_form`.`ID`, 
       '&PAGE_ID=3438731&USERNAME=xxxxx1&PASSWORD=xxxxx') AS `report_url` 
FROM 
(_data435386_xxxxx_main_form 
LEFT JOIN _data435386_xxxxx_1_job_profile ON((_data435386_xxxxx_main_form.ID = _data435386_xxxxx_1_job_profile.PARENT_RECORD_ID))) 
UNION ALL 


SELECT _data435386_xxxxx_1_job_profile.ID AS ID, 
_data435386_xxxxx_1_job_profile.ID AS Comment_Photos_ID, 
'Safety' AS Impact_Area, 
_data435386_xxxxx_1_job_profile.PARENT_RECORD_ID AS PARENT_RECORD_ID, 
_data435386_xxxxx_1_job_profile.pjq1 AS PJQ1, 
_data435386_xxxxx_1_job_profile.pjq_2 AS PJQ2, 
_data435386_xxxxx_1_job_profile.pjq_3 AS PJQ3, 
_data435386_xxxxx_1_job_profile.pjq_4 AS PJQ4, 
_data435386_xxxxx_1_job_profile.pjq_5 AS PJQ5, 
_data435386_xxxxx_1_job_profile.pjq_6 AS PJQ6, 
_data435386_xxxxx_1_job_profile.pjq_7 AS PJQ7, 
_data435386_xxxxx_1_job_profile.pjq_8 AS PJQ8, 
_data435386_xxxxx_1_job_profile.pjq_9 AS PJQ9, 
_data435386_xxxxx_1_job_profile.pjq_10 AS PJQ10, 
_data435386_xxxxx_main_form.additional_comments AS Additional_Comments, 
_data435386_xxxxx_main_form.wr_, 
NULL AS Completion_Due_Date, 
NULL AS Completion_Due_Date_1443, 
NULL AS Training_Needed, 
NULL AS Follow_Up_Description, 
REPLACE(_data435386_xxxxx_main_form.inspector, '_', ' ') AS Inspector, 
REPLACE(_data435386_xxxxx_main_form.crew_leader, '_', ' ') AS Crew_Leader, 
_data435386_xxxxx_main_form.date1 AS date1, 
REPLACE(_data435386_xxxxx_1_job_profile.district, '_', ' ') AS District, 
REPLACE(_data435386_xxxxx_1_job_profile.division, '_', ' ') AS Division, 
REPLACE(_data435386_xxxxx_1_job_profile.contractor_inspected, '_', ' ') AS Contractor_Inspected, 
301 Sample_Size_Req, 
     (CASE 
      WHEN 
       (_data435386_xxxxx_1_job_profile.division = 'xxxxx') 
      THEN 
       38197 
      WHEN 
       (_data435386_xxxxx_1_job_profile.division = 'xxxxx') 
      THEN 
       3734 
      WHEN 
       (_data435386_xxxxx_1_job_profile.division = 'xxxxx') 
      THEN 
       5044 
      WHEN 
       (_data435386_xxxxx_1_job_profile.division = 'xxxxx') 
      THEN 
       55214 
      WHEN 
       (_data435386_xxxxx_1_job_profile.division = 'xxxxx') 
      THEN 
       37742 
      ELSE NULL 
     END) AS Population_size, 
21_Uses_proper_ppe AS Results, 
3438623 AS Parent_Page_ID, 
'2.1 Uses Proper PPE' AS Task, 
'2.0 Safety' AS Construction_Activity, 
NULL AS Overall_Rating, 
CONCAT('https://xxxxx.xxxxx.com/exzact/dataPDF.php?TABLE_NAME=_data435386_xxxxx_main_form&ID=', 
       `_data435386_xxxxx_main_form`.`ID`, 
       '&PAGE_ID=3438731&USERNAME=xxxxx1&PASSWORD=xxxxx') AS `report_url` 
FROM 
((_data435386_xxxxx_main_form 
LEFT JOIN view_data435386_xxxxx_2_task_successful ON((_data435386_xxxxx_main_form.ID = view_data435386_xxxxx_2_task_successful.PARENT_RECORD_ID))) 
LEFT JOIN _data435386_xxxxx_1_job_profile ON((_data435386_xxxxx_main_form.ID = _data435386_xxxxx_1_job_profile.PARENT_RECORD_ID))) 
WHERE 21_Uses_proper_ppe IS NOT NULL 
UNION ALL 





SELECT _data435386_xxxxx_1_job_profile.ID AS ID, 
view_data435386_xxxxx_2_task_successful.ID AS Comment_Photos_ID, 
'Safety' AS Impact_Area, 
_data435386_xxxxx_1_job_profile.PARENT_RECORD_ID AS PARENT_RECORD_ID, 
_data435386_xxxxx_1_job_profile.pjq1 AS PJQ1, 
_data435386_xxxxx_1_job_profile.pjq_2 AS PJQ2, 
_data435386_xxxxx_1_job_profile.pjq_3 AS PJQ3, 
_data435386_xxxxx_1_job_profile.pjq_4 AS PJQ4, 
_data435386_xxxxx_1_job_profile.pjq_5 AS PJQ5, 
_data435386_xxxxx_1_job_profile.pjq_6 AS PJQ6, 
_data435386_xxxxx_1_job_profile.pjq_7 AS PJQ7, 
_data435386_xxxxx_1_job_profile.pjq_8 AS PJQ8, 
_data435386_xxxxx_1_job_profile.pjq_9 AS PJQ9, 
_data435386_xxxxx_1_job_profile.pjq_10 AS PJQ10, 
_data435386_xxxxx_main_form.additional_comments AS Additional_Comments, 
_data435386_xxxxx_main_form.wr_, 
NULL AS Completion_Due_Date, 
NULL AS Completion_Due_Date_1443, 
NULL AS Training_Needed, 
NULL AS Follow_Up_Description, 
REPLACE(_data435386_xxxxx_main_form.inspector, '_', ' ') AS Inspector, 
REPLACE(_data435386_xxxxx_main_form.crew_leader, '_', ' ') AS Crew_Leader, 
_data435386_xxxxx_main_form.date1 AS date1, 
REPLACE(_data435386_xxxxx_1_job_profile.district, '_', ' ') AS District, 
REPLACE(_data435386_xxxxx_1_job_profile.division, '_', ' ') AS Division, 
REPLACE(_data435386_xxxxx_1_job_profile.contractor_inspected, '_', ' ') AS Contractor_Inspected, 
301 Sample_Size_Req, 
     (CASE 
      WHEN 
       (_data435386_xxxxx_1_job_profile.division = 'xxxxx') 
      THEN 
       38197 
      WHEN 
       (_data435386_xxxxx_1_job_profile.division = 'xxxxx') 
      THEN 
       3734 
      WHEN 
       (_data435386_xxxxx_1_job_profile.division = 'xxxxx') 
      THEN 
       5044 
      WHEN 
       (_data435386_xxxxx_1_job_profile.division = 'xxxxx') 
      THEN 
       55214 
      WHEN 
       (_data435386_xxxxx_1_job_profile.division = 'xxxxx') 
      THEN 
       37742 
      ELSE NULL 
     END) AS Population_size, 
22_Damage_Prevention AS Results, 
3438623 AS Parent_Page_ID, 
'2.2 Damage Prevention' AS Task, 
'2.0 Safety' AS Construction_Activity, 
NULL AS Overall_Rating, 
CONCAT('https://xxxxx.xxxxx.com/exzact/dataPDF.php?TABLE_NAME=_data435386_xxxxx_main_form&ID=', 
       `_data435386_xxxxx_main_form`.`ID`, 
       '&PAGE_ID=3438731&USERNAME=xxxxx1&PASSWORD=xxxxx') AS `report_url` 
FROM 
((_data435386_xxxxx_main_form 
LEFT JOIN view_data435386_xxxxx_2_task_successful ON((_data435386_xxxxx_main_form.ID = view_data435386_xxxxx_2_task_successful.PARENT_RECORD_ID))) 
LEFT JOIN _data435386_xxxxx_1_job_profile ON((_data435386_xxxxx_main_form.ID = _data435386_xxxxx_1_job_profile.PARENT_RECORD_ID))) 
WHERE 22_Damage_Prevention IS NOT NULL 
UNION ALL 





SELECT _data435386_xxxxx_1_job_profile.ID AS ID, 
view_data435386_xxxxx_2_task_successful.ID AS Comment_Photos_ID, 
'Safety' AS Impact_Area, 
_data435386_xxxxx_1_job_profile.PARENT_RECORD_ID AS PARENT_RECORD_ID, 
_data435386_xxxxx_1_job_profile.pjq1 AS PJQ1, 
_data435386_xxxxx_1_job_profile.pjq_2 AS PJQ2, 
_data435386_xxxxx_1_job_profile.pjq_3 AS PJQ3, 
_data435386_xxxxx_1_job_profile.pjq_4 AS PJQ4, 
_data435386_xxxxx_1_job_profile.pjq_5 AS PJQ5, 
_data435386_xxxxx_1_job_profile.pjq_6 AS PJQ6, 
_data435386_xxxxx_1_job_profile.pjq_7 AS PJQ7, 
_data435386_xxxxx_1_job_profile.pjq_8 AS PJQ8, 
_data435386_xxxxx_1_job_profile.pjq_9 AS PJQ9, 
_data435386_xxxxx_1_job_profile.pjq_10 AS PJQ10, 
_data435386_xxxxx_main_form.additional_comments AS Additional_Comments, 
_data435386_xxxxx_main_form.wr_, 
NULL AS Completion_Due_Date, 
NULL AS Completion_Due_Date_1443, 
NULL AS Training_Needed, 
NULL AS Follow_Up_Description, 
REPLACE(_data435386_xxxxx_main_form.inspector, '_', ' ') AS Inspector, 
REPLACE(_data435386_xxxxx_main_form.crew_leader, '_', ' ') AS Crew_Leader, 
_data435386_xxxxx_main_form.date1 AS date1, 
REPLACE(_data435386_xxxxx_1_job_profile.district, '_', ' ') AS District, 
REPLACE(_data435386_xxxxx_1_job_profile.division, '_', ' ') AS Division, 
REPLACE(_data435386_xxxxx_1_job_profile.contractor_inspected, '_', ' ') AS Contractor_Inspected, 
301 Sample_Size_Req, 
     (CASE 
      WHEN 
       (_data435386_xxxxx_1_job_profile.division = 'xxxxx') 
      THEN 
       38197 
      WHEN 
       (_data435386_xxxxx_1_job_profile.division = 'xxxxx') 
      THEN 
       3734 
      WHEN 
       (_data435386_xxxxx_1_job_profile.division = 'xxxxx') 
      THEN 
       5044 
      WHEN 
       (_data435386_xxxxx_1_job_profile.division = 'xxxxx') 
      THEN 
       55214 
      WHEN 
       (_data435386_xxxxx_1_job_profile.division = 'xxxxx') 
      THEN 
       37742 
      ELSE NULL 
     END) AS Population_size, 
23_fire_bottle_and_no_smoking_sign AS Results, 
3438623 AS Parent_Page_ID, 
'2.3 Fire Bottle and No Smoking Sign' AS Task, 
'2.0 Safety' AS Construction_Activity, 
NULL AS Overall_Rating, 
CONCAT('https://xxxxx.xxxxx.com/exzact/dataPDF.php?TABLE_NAME=_data435386_xxxxx_main_form&ID=', 
       `_data435386_xxxxx_main_form`.`ID`, 
       '&PAGE_ID=3438731&USERNAME=xxxxx1&PASSWORD=xxxxx') AS `report_url` 
FROM 
((_data435386_xxxxx_main_form 
LEFT JOIN view_data435386_xxxxx_2_task_successful ON((_data435386_xxxxx_main_form.ID = view_data435386_xxxxx_2_task_successful.PARENT_RECORD_ID))) 
LEFT JOIN _data435386_xxxxx_1_job_profile ON((_data435386_xxxxx_main_form.ID = _data435386_xxxxx_1_job_profile.PARENT_RECORD_ID))) 
WHERE 23_fire_bottle_and_no_smoking_sign IS NOT NULL 
UNION ALL 





SELECT _data435386_xxxxx_1_job_profile.ID AS ID, 
view_data435386_xxxxx_2_task_successful.ID AS Comment_Photos_ID, 
'Safety' AS Impact_Area, 
_data435386_xxxxx_1_job_profile.PARENT_RECORD_ID AS PARENT_RECORD_ID, 
_data435386_xxxxx_1_job_profile.pjq1 AS PJQ1, 
_data435386_xxxxx_1_job_profile.pjq_2 AS PJQ2, 
_data435386_xxxxx_1_job_profile.pjq_3 AS PJQ3, 
_data435386_xxxxx_1_job_profile.pjq_4 AS PJQ4, 
_data435386_xxxxx_1_job_profile.pjq_5 AS PJQ5, 
_data435386_xxxxx_1_job_profile.pjq_6 AS PJQ6, 
_data435386_xxxxx_1_job_profile.pjq_7 AS PJQ7, 
_data435386_xxxxx_1_job_profile.pjq_8 AS PJQ8, 
_data435386_xxxxx_1_job_profile.pjq_9 AS PJQ9, 
_data435386_xxxxx_1_job_profile.pjq_10 AS PJQ10, 
_data435386_xxxxx_main_form.additional_comments AS Additional_Comments, 
_data435386_xxxxx_main_form.wr_, 
NULL AS Completion_Due_Date, 
NULL AS Completion_Due_Date_1443, 
NULL AS Training_Needed, 
NULL AS Follow_Up_Description, 
REPLACE(_data435386_xxxxx_main_form.inspector, '_', ' ') AS Inspector, 
REPLACE(_data435386_xxxxx_main_form.crew_leader, '_', ' ') AS Crew_Leader, 
_data435386_xxxxx_main_form.date1 AS date1, 
REPLACE(_data435386_xxxxx_1_job_profile.district, '_', ' ') AS District, 
REPLACE(_data435386_xxxxx_1_job_profile.division, '_', ' ') AS Division, 
REPLACE(_data435386_xxxxx_1_job_profile.contractor_inspected, '_', ' ') AS Contractor_Inspected, 
NULL Sample_Size_Req, 
     (CASE 
      WHEN 
       (_data435386_xxxxx_1_job_profile.division = 'xxxxx') 
      THEN 
       38197 
      WHEN 
       (_data435386_xxxxx_1_job_profile.division = 'xxxxx') 
      THEN 
       3734 
      WHEN 
       (_data435386_xxxxx_1_job_profile.division = 'xxxxx') 
      THEN 
       5044 
      WHEN 
       (_data435386_xxxxx_1_job_profile.division = 'xxxxx') 
      THEN 
       55214 
      WHEN 
       (_data435386_xxxxx_1_job_profile.division = 'xxxxx') 
      THEN 
       37742 
      ELSE NULL 
     END) AS Population_size, 
24_traffic_control_plan AS Results, 
3438623 AS Parent_Page_ID, 
'2.4 Traffic Control Plan' AS Task, 
'2.0 Safety' AS Construction_Activity, 
NULL AS Overall_Rating, 
CONCAT('https://xxxxx.xxxxx.com/exzact/dataPDF.php?TABLE_NAME=_data435386_xxxxx_main_form&ID=', 
       `_data435386_xxxxx_main_form`.`ID`, 
       '&PAGE_ID=3438731&USERNAME=xxxxx1&PASSWORD=xxxxx') AS `report_url` 
FROM 
((_data435386_xxxxx_main_form 
LEFT JOIN view_data435386_xxxxx_2_task_successful ON((_data435386_xxxxx_main_form.ID = view_data435386_xxxxx_2_task_successful.PARENT_RECORD_ID))) 
LEFT JOIN _data435386_xxxxx_1_job_profile ON((_data435386_xxxxx_main_form.ID = _data435386_xxxxx_1_job_profile.PARENT_RECORD_ID))) 
WHERE 24_traffic_control_plan IS NOT NULL 
UNION ALL

出典

2017-01-12 JMB1656

+0

'UNION'は一般的にはパフォーマンスが集中的ではありません。なぜなら、結果セットを別のものに追加することよりも少しだけ多いからです。結合されているクエリのパフォーマンスを調べるほうがよいでしょう。 – Uueerdo

+0

選択肢間の違いを強調表示してください。 –

答えて

0

は、ほぼ同一であり、唯一異なると複数の結果行を生成するのに役立ちますResultsとTaskのフィールドを使用している場合は、これらのクエリをマージするか、またはクエリを別のフィールドとして統一された（Resultsフィールドのすべての値で）バージョンを中間（擬一時的）テーブルに挿入し、それは

"中間（擬一時的）"とは、私が意図していない非一時的なテーブルを意味しますep;私はTEMPORARYテーブルを提案しますが、MySQLは同じクエリ（UNIONや自己JOINなど）で複数回参照することを許可していません。

編集：それはResult値から来ているテーブルも明らかではありません。それらが_data435386_xxxxx_main_formからでない場合は、内部ジョインになる可能性があるLEFT JOINがあります。

出典

2017-01-12 20:01:49 Uueerdo

関連する問題

 関連する問題