长查询调优

Question

我有以下查询，在这个查询中，我选择 ebs tables，自定义 table 有 header_id 并在自定义中填充数据table XXREPORT_L1_TBL。

我想调整这个查询。

[更新] 对查询进行了如下更改：

将查询拆分为 3 个不同的插入语句
删除了对值进行在线查询的列

在末尾为这些列添加了更新语句。

insert into XX.XXREPORT_L1_TBL ( ORDER_NUMBER 
                                        , LINE_NUMBER
                                        , UOM
                                        , CUSTOMER_LENGTH
                                        , THEORETICAL_WEIGHT
                                        , FINISH
                                        , ORDER_QTY_PCS
                                        , ORDER_QTY_KGS
                                        , SALES_VALUE
                                        , TOTAL_VALUE
                                        , ORDERED_QUANTITY 
                                        , WIP_ENTITY_ID 
                                        , JOB_NAME
                                        , JOB_TYPE
                                        , JOB_STATUS 
                                        , JOB_RELEASED_DATE 
                                        , DATE_COMPLETED
                                        , DATE_CLOSED
                                        , JOB_CARD_QTY 
                                        , ALLOY 
                                        , PROFILE
                                        , PROD_QTY_KGS 
                                        , COST_KGS_THEORY 
                                        , COST_KGS_ACTUAL
    )

SELECT 
 ---- Sales Order
   xx.order_number
   ,xx.line_number 
   ,xx.UOM,
   xx.customer_length,
   xx.theoretical_weight,
   xx.finish,
   xx.order_qty_pcs, 
   xx.order_qty_kgs,      
   xx.sales_value, -- total value / total kgs
   xx.total_value, -- line total
   xx.ordered_quantity,
 -- Production
   xx.wip_entity_id,
   xx.job_name,
   ( select case when a.inventory_item_id = 5716770 and a.job_type='NOT CHILD' then 'PARENT' 
            when a.job_type='CHILD' and a.inventory_item_id is null then 'CHILD' 
            when a.job_type='NOT CHILD' and a.inventory_item_id is NOT null then 'NOT CHILD' END JOB_TYPE 
     from ( select  disc2.wip_entity_id as wip_entity_id,      decode      (      nvl(disc2.attribute9,-1) , -1,'NOT CHILD', 'CHILD') job_type,      oel.inventory_item_id
                  from APPS.wip_discrete_jobs disc2,      APPS.oe_order_lines_all oel
                  where oel.line_id(+) = disc2.source_line_id
           )a
     where a.wip_entity_id = xx.wip_entity_id
   ) job_type, 
   ( select decode ( xx.status_type, 6, 'Open',
                                   3, 'Open',
                                   4,      'Completed',                                          
                                    LU1.MEANING )
            from APPS.FND_LOOKUP_VALUES LU1 
            where  LU1.LOOKUP_TYPE = 'WIP_JOB_STATUS'
            AND LU1.LOOKUP_CODE = xx.STATUS_TYPE
   ) job_status,      
   xx.job_released_date,
   xx.date_completed, 
   xx.date_closed
   ,xx.net_quantity as job_card_qty
   ,xx.alloy
   ,xx.profile
   ,xx.prod_qty_kgs      
     -- Theoretical Order cost  
   ,xx.cost_kgs_theory
     -- Actual Order cost      
   ,xx.cost_kgs_actual
     from (      
      select a.*
    -- Theoretical Order cost
            , DECODE (a.qty_completed * a.customer_length * a.theoretical_weight,0,0,
                a.TOT_THEORY_COST_RELIEVED/(a.qty_completed * a.customer_length * a.theoretical_weight) ) as cost_kgs_theory 
    -- Actual Order cost
            , DECODE ( a.qty_completed * a.customer_length * a.theoretical_weight, 0, 0,
                a.TOT_ACTUAL_COST_INCURRED/(a.qty_completed * a.customer_length * a.theoretical_weight )) as cost_kgs_actual
            from ( 

  select 
 -- Normal orders, INTERNAL Orders, Crimped Profile (parent jobs)     
   -- Sales Order      
        oeh.order_number as order_number
        ,oel.line_number
        ,oel.pricing_quantity_uom as UOM
        ,oel.attribute1 as customer_length
        ,oel.attribute6 as theoretical_weight
        ,oel.attribute5 as finish
        ,oel.attribute18 as order_qty_pcs
        ,oel.attribute7 as order_qty_kgs
        ,xx_om.GetLineUnitSellingPrice(oel.line_id) sales_value
        ,xx_om.GetHeaderUnitSellingPrice(oeh.header_id) total_value
        ,oel.ordered_quantity ordered_quantity
 -- Production                
        , tbl0.qty_completed as qty_completed
        ,disc.wip_entity_id as wip_entity_id
        ,( select wip_entity_name from APPS.wip_entities ent
            where ent.wip_entity_id = disc.wip_entity_id) job_name
        ,disc.status_type
        ,disc.date_released as job_released_date
        , DECODE ( disc.date_completed, NULL, disc.date_completed,
        -- my day Definition
        to_date(to_char(to_date(TO_CHAR(disc.date_completed-     interval      '7' hour,'DD-MON-YYYY')||'00:00:00','DD-MON-YYYY HH24:MI:SS'),      'DD-MON-YYYY HH24:MI:SS'), 'DD-MON-YYYY      HH24:MI:SS'))      as      date_completed
        , DECODE ( disc.date_closed, NULL, disc.date_closed,
        to_date(to_char(to_date(TO_CHAR(disc.date_closed-     interval      '7' hour,'DD-MON-YYYY')||'00:00:00','DD-MON-YYYY HH24:MI:SS'),      'DD-MON-YYYY HH24:MI:SS'), 'DD-MON-YYYY HH24:MI:SS'))      as      date_closed
        , disc.net_quantity
   , ( select opr2.quantity_completed
         from APPS.wip_operations opr2
    where opr2.wip_entity_id = disc.wip_entity_id
    and opr2.operation_seq_num =       (select max(opr.operation_seq_num)
                                      from APPS.wip_operations opr, APPS.wip_discrete_jobs disc2
                                      where opr.wip_entity_id = disc2.wip_entity_id 
                                      and disc2.wip_entity_id =  disc.wip_entity_id))* oel.attribute1 * oel.attribute6 as prod_qty_kgs
        ,oel.attribute4 as alloy
        ,oel.attribute2 as profile

 -- Theoretical Order cost
          ,tbl0.TOT_THEORY_COST_RELIEVED
 -- Actual Order cost 
          ,tbl0.TOT_ACTUAL_COST_INCURRED
 from XX.XXREPORT_Lzero_TBL tbl0
 join APPS.oe_order_headers_all oeh on oeh.header_id = tbl0.header_id 
 join APPS.oe_order_lines_all oel on   oeh.org_id = oel.org_id and     oeh.header_id = oel.header_id
 join APPS.xx_assemblies asm on oel.line_id = asm.line_id
 join APPS.wip_discrete_jobs disc on disc.primary_item_id = asm.inventory_item_id
   where  oel.link_to_line_id is null

 union
 -- Crimped Child Jobs
  select 
 -- Sales Order      
        oeh.order_number as order_number
        ,oel.line_number
        ,oel.pricing_quantity_uom as UOM
        ,oel.attribute1 as customer_length
        ,oel.attribute6 as theoretical_weight
        ,oel.attribute5 as finish
        ,oel.attribute18 as order_qty_pcs
        ,oel.attribute7 as order_qty_kgs
        ,xx_om.GetLineUnitSellingPrice(oel.line_id) sales_value
        ,xx_om.GetHeaderUnitSellingPrice(oeh.header_id) total_value
        ,oel.ordered_quantity ordered_quantity
 -- Production
        , tbl0.qty_completed as qty_completed
        ,child_jobs.wip_entity_id as wip_entity_id
        ,( select wip_entity_name from APPS.wip_entities ent
            where ent.wip_entity_id = child_jobs.wip_entity_id)          job_name
        ,disc.status_type
        ,disc.date_released as job_released_date
        , DECODE ( disc.date_completed, NULL, disc.date_completed,
        to_date(to_char(to_date(TO_CHAR(disc.date_completed-interval      '7' hour,'DD-MON-YYYY')||'00:00:00','DD-MON-YYYY HH24:MI:SS'),      'DD-MON-YYYY HH24:MI:SS'), 'DD-MON-YYYY HH24:MI:SS')) as      date_completed
        , DECODE ( disc.date_closed, NULL, disc.date_closed,
        to_date(to_char(to_date(TO_CHAR(disc.date_closed-interval      '7' hour,'DD-MON-YYYY')||'00:00:00','DD-MON-YYYY HH24:MI:SS'),      'DD-MON-YYYY HH24:MI:SS'), 'DD-MON-YYYY HH24:MI:SS')) as      date_closed
        , disc.net_quantity
        , ( select opr2.quantity_completed
              from APPS.wip_operations opr2
              where opr2.wip_entity_id = disc.wip_entity_id
              and opr2.operation_seq_num =       (select          max(opr.operation_seq_num)
                                                from     APPS.wip_operations opr, APPS.wip_discrete_jobs disc2
                                                where opr.wip_entity_id = disc2.wip_entity_id 
                                                and disc.wip_entity_id =  disc.wip_entity_id))* oel.attribute1 * oel.attribute6 as prod_qty_kgs                
        ,oel.attribute4 as alloy
        ,oel.attribute2 as profile
 -- Theoretical Order cost
          ,tbl0.TOT_THEORY_COST_RELIEVED
 -- Actual Order cost 
          ,tbl0.TOT_ACTUAL_COST_INCURRED     
from XX.XXREPORT_Lzero_TBL tbl0
 join APPS.oe_order_headers_all oeh on oeh.header_id = tbl0.header_id
 join APPS.oe_order_lines_all oel on oeh.org_id = oel.org_id and     oeh.header_id = oel.header_id
 join APPS.xx_assemblies asm on oel.line_id = asm.line_id
 join APPS.wip_discrete_jobs disc on disc.primary_item_id =     asm.inventory_item_id 
 join ( select wdj2.source_line_id, wdj2.attribute9 child_wip, wdj2.wip_entity_id, wdj2.status_type status_type
    from APPS.wip_discrete_jobs wdj2
    where attribute9 IS NOT NULL ) child_jobs on      child_jobs.child_wip = to_char(disc.wip_entity_id)
 where oel.link_to_line_id is null

  union
  -- Orders with star (*) items need to pick profile and customer      length etc from ego_configured_pr_agv view 
  select 
 -- Sales Order      
        oeh.order_number as order_number
        ,oel.line_number
        ,oel.pricing_quantity_uom as UOM
        ,to_char(agv.gx_cp_length) as customer_length
        ,to_char(agv.gx_cp_th_weight) as theoretical_weight
        ,agv.gx_cp_surfacetreatment as finish
        ,oel.attribute18 as order_qty_pcs
        , to_char(agv.gx_cp_th_weight * agv.gx_cp_length *          oel.ordered_quantity) as order_qty_kgs
        ,XX.xx_om.GetLineUnitSellingPrice(oel.line_id) sales_value
        ,XX.xx_om.GetHeaderUnitSellingPrice(oeh.header_id)      total_value
        ,oel.ordered_quantity ordered_quantity
 -- Production                
        , tbl0.qty_completed as qty_completed
        ,disc.wip_entity_id as wip_entity_id
        ,( select wip_entity_name from APPS.wip_entities ent
            where ent.wip_entity_id = disc.wip_entity_id) job_name
        ,disc.status_type
        ,disc.date_released as job_released_date
        , DECODE ( disc.date_completed, NULL, disc.date_completed,
        to_date(to_char(to_date(TO_CHAR(disc.date_completed-interval      '7' hour,'DD-MON-YYYY')||'00:00:00','DD-MON-YYYY HH24:MI:SS'),      'DD-MON-YYYY HH24:MI:SS'), 'DD-MON-YYYY HH24:MI:SS')) as      date_completed
        , DECODE ( disc.date_closed, NULL, disc.date_closed,
        to_date(to_char(to_date(TO_CHAR(disc.date_closed-interval      '7' hour,'DD-MON-YYYY')||'00:00:00','DD-MON-YYYY HH24:MI:SS'),      'DD-MON-YYYY HH24:MI:SS'), 'DD-MON-YYYY HH24:MI:SS')) as      date_closed
        , disc.net_quantity
   , ( select opr2.quantity_completed
    from APPS.wip_operations opr2
    where opr2.wip_entity_id = disc.wip_entity_id
    and opr2.operation_seq_num =       (select      max(opr.operation_seq_num)
                                      from APPS.wip_operations opr,      APPS.wip_discrete_jobs disc2
                                      where opr.wip_entity_id =      disc2.wip_entity_id 
                                      and disc2.wip_entity_id =       disc.wip_entity_id))* agv.gx_cp_length * agv.gx_cp_th_weight as      prod_qty_kgs
        ,gx_cp_alloy as alloy
        ,gx_cp_profile_id as profile
 -- Theoretical Order cost
          ,tbl0.TOT_THEORY_COST_RELIEVED
 -- Actual Order cost 
          ,tbl0.TOT_ACTUAL_COST_INCURRED

 from XX.XXREPORT_Lzero_TBL tbl0
 join APPS.oe_order_headers_all oeh on oeh.header_id = tbl0.header_id
 join APPS.oe_order_lines_all oel on oeh.org_id = oel.org_id and          oeh.header_id = oel.header_id
 join APPS.wip_discrete_jobs disc on oel.line_id =      disc.source_line_id
 join APPS.ego_gx_configured_pr_agv agv on agv.inventory_item_id=      oel.inventory_item_id
   where oel.link_to_line_id is null
        )a 
        ) xx;

Answer 1

几乎可以肯定没有任何简短的解决方案来调整此查询。这里的问题是它的大小和复杂性。表现不佳只是一个后果。

作为第一步，我会考虑从键盘上休息一下。拿起笔和纸，用通俗易懂的英语（或您喜欢的 "human" 语言）写下您希望通过此查询从数据库中得到回答的问题。然后问问自己 什么 columns/variables/attributes 你绝对需要回答这些问题？ 也把它们写下来。

现在，您真的需要所有这些列、嵌套连接、选择等来生成这些变量吗？也许吧，但可能不是。这里的关键点是仅关注您需要的 data/information (YAGNI)，然后从那里绘制出一张图片，您需要生成能够回答您问题的信息的基本关系。换句话说，由外而内，而不是相反。

我意识到这听起来可能有点抽象和模糊，但重点是保持清晰和简单的代码始终是一场持续的斗争。密切关注手头的 objective 将帮助您远离杂草。

最后说几点比较具体的想法，一目了然：

你真的需要那个工会吗？如果可以，尽量不要它。
嵌套很糟糕。嵌套嵌套特别糟糕。尽可能保持平整。
是否可以将其拆分为独立的、更小的查询？
为变量使用更具描述性的名称，明智地添加注释。
学习并掌握 SQL EXPLAIN 命令。

长查询调优

A long query tuning

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