Sql Oracle中单个查询中的多个计数

是否有一种简单的方法来实现此查询结果以提高其性能。我不希望每次选择都连接两个表

select Product, LCTL, LQ, LCTQL from
(
(select 'Phone / HSI' as Product, (select count(1) as "LCTL" from tasks t,task_categories c where t.category_id=c.category_id and to_date(to_char(t.user_create_date,'DD-MON-YYYY'))>=?1 and to_date(to_char(t.user_create_date,'DD-MON-YYYY'))<=?2 and c.category_long_name='m ECOMM ORD') as LCTL,
(select count(1) as "LCTL" from tasks t,task_categories c where t.category_id=c.category_id and to_date(to_char(t.user_create_date,'DD-MON-YYYY'))>=?1 and to_date(to_char(t.user_create_date,'DD-MON-YYYY'))<=?2 and (c.category_long_name='CRIS ECOMM ORD' or c.category_long_name='CRIS ECOMM HELD')) as LQ,
(select count(1) as "LCTL" from tasks t,task_categories c where t.category_id=c.category_id and to_date(to_char(t.user_create_date,'DD-MON-YYYY'))>=?1 and to_date(to_char(t.user_create_date,'DD-MON-YYYY'))<=?2 and (c.category_long_name='CRIS ECOMM ORD' or c.category_long_name='CRIS ECOMM HELD' or c.category_long_name='m ECOMM ORD')) as LCTQL from dual
union all

select '(Phone / HSI) + Prism' as Product,(select count(1) as "LCTL" from tasks t,task_categories c where t.category_id=c.category_id and to_date(to_char(t.user_create_date,'DD-MON-YYYY'))>=?1 and to_date(to_char(t.user_create_date,'DD-MON-YYYY'))<=?2 and c.category_long_name='m ECOMM PRISM') as LCTL,
(select count(1) as "LCTL" from tasks t,task_categories c where t.category_id=c.category_id and to_date(to_char(t.user_create_date,'DD-MON-YYYY'))>=?1 and to_date(to_char(t.user_create_date,'DD-MON-YYYY'))<=?2 and c.category_long_name='CRIS ECOMM PRISM') as LQ,
(select count(1) as "LCTL" from tasks t,task_categories c where t.category_id=c.category_id and to_date(to_char(t.user_create_date,'DD-MON-YYYY'))>=?1 and to_date(to_char(t.user_create_date,'DD-MON-YYYY'))<=?2 and (c.category_long_name='m ECOMM PRISM' or c.category_long_name='CRIS ECOMM PRISM')) as LCTQL from dual

union all
select '(Phone / HSI) + DTV' as Product,(select count(1) as "LCTL" from tasks t,task_categories c where t.category_id=c.category_id and to_date(to_char(t.user_create_date,'DD-MON-YYYY'))>=?1 and to_date(to_char(t.user_create_date,'DD-MON-YYYY'))<=?2 and c.category_long_name='m ECOMM DTV') as LCTL,
(select count(1) as "LCTL" from tasks t,task_categories c where t.category_id=c.category_id and to_date(to_char(t.user_create_date,'DD-MON-YYYY'))>=?1 and to_date(to_char(t.user_create_date,'DD-MON-YYYY'))<=?2 and c.category_long_name='CRIS ECOMM DTV') as LQ,
(select count(1) as "LCTL" from tasks t,task_categories c where t.category_id=c.category_id and to_date(to_char(t.user_create_date,'DD-MON-YYYY'))>=?1 and to_date(to_char(t.user_create_date,'DD-MON-YYYY'))<=?2 and (c.category_long_name='m ECOMM DTV' or c.category_long_name='CRIS ECOMM DTV')) as LCTQL from dual

union all
select 'Total' as Product,(select count(1) as "LCTL" from tasks t,task_categories c where t.category_id=c.category_id and to_date(to_char(t.user_create_date,'DD-MON-YYYY'))>=?1 and to_date(to_char(t.user_create_date,'DD-MON-YYYY'))<=?2 and (c.category_long_name='m ECOMM DTV' or c.category_long_name='m ECOMM PRISM' or c.category_long_name='m ECOMM DTV')) as LCTL,
(select count(1) as "LCTL" from tasks t,task_categories c where t.category_id=c.category_id and to_date(to_char(t.user_create_date,'DD-MON-YYYY'))>=?1 and to_date(to_char(t.user_create_date,'DD-MON-YYYY'))<=?2 and (c.category_long_name='CRIS ECOMM DTV' or c.category_long_name='CRIS ECOMM PRISM' or c.category_long_name='CRIS ECOMM ORD' or c.category_long_name='CRIS ECOMM HELD')) as LQ,
(select count(1) as "LCTL" from tasks t,task_categories c where t.category_id=c.category_id and to_date(to_char(t.user_create_date,'DD-MON-YYYY'))>=?1 and to_date(to_char(t.user_create_date,'DD-MON-YYYY'))<=?2 and (c.category_long_name='m ECOMM DTV' or c.category_long_name='m ECOMM PRISM' or c.category_long_name='m ECOMM DTV' or c.category_long_name='CRIS ECOMM DTV' or c.category_long_name='CRIS ECOMM PRISM' or c.category_long_name='CRIS ECOMM ORD' or c.category_long_name='CRIS ECOMM HELD' )) as LCTQL from dual)
)

---

我认为你的问题可以这样写：

SELECT
  product,
  SUM(CASE WHEN c.category_long_name  = 'm ECOMM ORD'      THEN 1 ELSE 0 END) AS LCTL,
  SUM(CASE WHEN c.category_long_name  = 'CRIS ECOMM ORD' 
             OR c.category_long_name  = 'CRIS ECOMM HELD'  THEN 1 ELSE 0 END) AS LQ,
  SUM(CASE WHEN c.category_long_name IN('CRIS ECOMM ORD',
                                        'CRIS ECOMM HELD',
                                        'm ECOMM ORD')     THEN 1 ELSE 0 END) AS LCTQ,
  SUM(CASE WHEN c.category_long_name = 'm ECOMM PRISM'     THEN 1 ELSE 0 END) AS lccc,
  ...
  ...
  COUNT(*) AS "Total"
FROM tasks t
INNER JOIN task_categories c ON t.category_id=c.category_id
WHERE to_date(to_char(t.user_create_date, 'DD-MON-YYYY')) >= ?1
  and to_date(to_char(t.user_create_date, 'DD-MON-YYYY')) <= ?2
GROUP BY product;

选择
产品,，
作为LCTL的总和（c.category_long_name='m ECOMM ORD'然后1或0 END时的情况），
总和（c.category_long_name='CRIS ECOMM ORD'时的情况）
或c.category_long_name='CRIS ECOMM hold'然后1或0结束）作为LQ，
金额（c.category_long_名称为（'CRIS ECOMM ORD'）时的情况，
“CRIS ECOMM控股公司”，
“m ECOMM ORD”）然后1（其他0结束）作为LCTQ，
作为lccc的总和（c.category_long_name='m ECOMM PRISM'然后1或0结束时的情况），
...
...
将（*）计为“总计”
来自任务t
内部联接任务\u类别c在t.category\u id=c.category\u id上
何处到日期（到字符（t.user创建日期，'DD-MON-YYYY'）>=？1
和截止日期（截止字符（t.user\u create\u date，'DD-MON-YYYY'））
SELECT
  product,
  SUM(CASE WHEN c.category_long_name  = 'm ECOMM ORD'      THEN 1 ELSE 0 END) AS LCTL,
  SUM(CASE WHEN c.category_long_name  = 'CRIS ECOMM ORD' 
             OR c.category_long_name  = 'CRIS ECOMM HELD'  THEN 1 ELSE 0 END) AS LQ,
  SUM(CASE WHEN c.category_long_name IN('CRIS ECOMM ORD',
                                        'CRIS ECOMM HELD',
                                        'm ECOMM ORD')     THEN 1 ELSE 0 END) AS LCTQ,
  SUM(CASE WHEN c.category_long_name = 'm ECOMM PRISM'     THEN 1 ELSE 0 END) AS lccc,
  ...
  ...
  COUNT(*) AS "Total"
FROM tasks t
INNER JOIN task_categories c ON t.category_id=c.category_id
WHERE to_date(to_char(t.user_create_date, 'DD-MON-YYYY')) >= ?1
  and to_date(to_char(t.user_create_date, 'DD-MON-YYYY')) <= ?2
GROUP BY product;