Sql 用Pivot替换子查询

我一直在使用输出列的扩展子查询重写一个查询（大量表，目前只有45秒）。有申请人（又名Comp）、查询和活动（又名GS）。当一个申请者有一个特定类型的查询和一个对应于查询类型的特定类型的事件时，他们会被包括在内，所以我在加入中配对了标准

我曾尝试使用透视表重写列，但这是正确的方法吗？一个缺点是有时两种查询类型匹配一种事件类型，我不得不将它们分开

使用的SQL语句：

CREATE TABLE F_ENQUIRY  (
          E_KEY VARCHAR(15) NOT NULL,
          E_APP_LINK VARCHAR(15) NOT NULL,
          E_DATE_REG datetime NOT NULL, 
          E_PRIORITY_LINK int NOT NULL, 
          PRIMARY KEY(E_KEY)
          )
GO

CREATE TABLE F_EVENTS  (
          EVENT_NO int, 
          EVENT_KEY VARCHAR(15), 
          EVENT_APP_LINK VARCHAR(15),
          EVENT_DATE datetime,
          EVENT_TYPE int,
          EVENT_TYPE_LINK int,
          PRIMARY KEY(EVENT_NO)
          )

GO

CREATE TABLE F_APPLICANT  (
          "A_KEY" VARCHAR(15) NOT NULL,
          PRIMARY KEY(A_KEY)
          )
GO

INSERT INTO F_ENQUIRY (E_KEY,E_APP_LINK,E_DATE_REG,E_PRIORITY_LINK) VALUES 
('303+1001','303+10019','2020-01-12 00:00:00.000',65)
,('303+1002','303+10019','2015-03-03 00:00:00.000',65)
,('303+1003','303+10019','2002-01-18 00:00:00.000',65)
,('303+1004','303+10029','2019-04-29 00:00:00.000',65)
,('303+1005','303+10029','2019-04-29 00:00:00.000',65)
,('303+1006','303+10029','2019-04-29 00:00:00.000',65)
,('303+1007','303+10029','2019-04-29 00:00:00.000',65)
,('303+1008','303+10029','2019-04-29 00:00:00.000',65)
,('303+1016','303+10029','2019-04-29 00:00:00.000',20)
,('303+1017','303+10029','2019-04-29 00:00:00.000',20)
,('303+1018','303+10029','2019-04-29 00:00:00.000',20)
,('303+1019','303+10019','2019-04-29 00:00:00.000',33)
,('303+1020','303+10019','2019-04-29 00:00:00.000',33)
,('303+1021','303+10019','2019-04-29 00:00:00.000',33)

GO

INSERT INTO F_EVENTS (EVENT_NO,EVENT_KEY,EVENT_APP_LINK,EVENT_DATE,EVENT_TYPE,EVENT_TYPE_LINK) VALUES 
(893693,'303+1001','303+10019','2019-11-13 00:00:00.000',1308,99)
,(840905,'303+1002','303+10019','2019-06-28 00:00:00.000',1308,99)
,(893694,'303+1003','303+10019','2019-11-13 00:00:00.000',1308,99)
,(893695,'303+1004','303+10029','2019-11-13 00:00:00.000',1308,99)
,(781122,'303+1005','303+10029','2019-02-14 00:00:00.000',1308,99)
,(784170,'303+1001','303+10029','2019-02-20 00:00:00.000',1308,99)
,(788124,'303+1002','303+10029','2019-03-01 00:00:00.000',1308,99)
,(795941,'303+1003','303+10029','2019-03-25 00:00:00.000',1308,99)
,(797944,'303+1004','303+10029','2019-03-27 00:00:00.000',1308,99)
,(802037,'303+1005','303+10029','2019-03-28 00:00:00.000',1308,99)
,(821342,'303+1013','303+10029','2019-05-10 00:00:00.000',1308,130)
,(826063,'303+1014','303+10029','2019-05-29 00:00:00.000',1308,130)
,(828412,'303+1015','303+10029','2019-05-30 00:00:00.000',1308,130)
,(831525,'303+1016','303+10029','2019-06-07 00:00:00.000',1308,130)
,(833202,'303+1017','303+10029','2019-06-11 00:00:00.000',1308,130)
,(837145,'303+1019','303+10019','2019-06-21 00:00:00.000',1308,143)
,(842768,'303+1020','303+10019','2019-07-19 00:00:00.000',1308,143)
,(845624,'303+1021','303+10019','2019-07-30 00:00:00.000',1308,143)
,(848579,'303+1022','303+10019','2019-08-06 00:00:00.000',1308,143)
,(851026,'303+1023','303+10019','2019-08-13 00:00:00.000',1308,143)

GO

INSERT INTO F_APPLICANT (a_key) VALUES 
('303+10019'),
('303+10029')

GO

select
    distinct a_key as Comp_Link,
    EandGS.GS_Type_Link,
    EandGS.GS_Date,
    (
    select
        max(e_date_reg)
    from
        f_enquiry
    where
        e_app_link = a_key
        and e_priority_link in (69,65)
        and e_date_reg >= '01/APR/2019'
        and e_date_reg <= '31/MAR/2020') as "A Date",
    (
    select
        max(e_date_reg)
    from
        f_enquiry
    where
        e_app_link = a_key
        and e_priority_link in (34)
        and e_date_reg >= '01/APR/2019'
        and e_date_reg <= '31/MAR/2020') as "B Date",
    (
    select
        max(e_date_reg)
    from
        f_enquiry
    where
        e_app_link = a_key
        and e_priority_link in (27,
        50)
        and e_date_reg >= '01/APR/2019'
        and e_date_reg <= '31/MAR/2020') as "C Date",
    (
    select
        max(e_date_reg)
    from
        f_enquiry
    where
        e_app_link = a_key
        and e_priority_link in (28)
        and e_date_reg >= '01/APR/2019'
        and e_date_reg <= '31/MAR/2020') as "D Date",
    (
    select
        max(e_date_reg)
    from
        f_enquiry
    where
        e_app_link = a_key
        and e_priority_link in (26)
        and e_date_reg >= '01/APR/2019'
        and e_date_reg <= '31/MAR/2020') as "E Date",
    (
    select
        max(e_date_reg)
    from
        f_enquiry
    where
        e_app_link = a_key
        and e_priority_link in (20)
        and e_date_reg >= '01/APR/2019'
        and e_date_reg <= '31/MAR/2020') as "F Date",
    (
    select
        max(e_date_reg)
    from
        f_enquiry
    where
        e_app_link = a_key
        and e_priority_link in (36)
        and e_date_reg >= '01/APR/2019'
        and e_date_reg <= '31/MAR/2020') as "G Date",
    (
    select
        max(e_date_reg)
    from
        f_enquiry
    where
        e_app_link = a_key
        and e_priority_link in (33)
        and e_date_reg >= '01/APR/2019'
        and e_date_reg <= '31/MAR/2020') as "H Date",
    (
    select
        max(e_date_reg)
    from
        f_enquiry
    where
        e_app_link = a_key
        and e_priority_link in (23)
        and e_date_reg >= '01/APR/2019'
        and e_date_reg <= '31/MAR/2020') as "I Date",
    (
    select
        max(e_date_reg)
    from
        f_enquiry
    where
        e_app_link = a_key
        and e_priority_link in (25)
        and e_date_reg >= '01/APR/2019'
        and e_date_reg <= '31/MAR/2020') as "J Date",
    (
    select
        max(e_date_reg)
    from
        f_enquiry
    where
        e_app_link = a_key
        and e_priority_link in (24,
        43)
        and e_date_reg >= '01/APR/2019'
        and e_date_reg <= '31/MAR/2020') as "K Date",
    (
    select
        max(e_date_reg)
    from
        f_enquiry
    where
        e_app_link = a_key
        and e_priority_link in (72)
        and e_date_reg >= '01/APR/2019'
        and e_date_reg <= '31/MAR/2020') as "L Date",
    (
    select
        max(e_date_reg)
    from
        f_enquiry
    where
        e_app_link = a_key
        and e_priority_link in (22,
        14)
        and e_date_reg >= '01/APR/2019'
        and e_date_reg <= '31/MAR/2020') as "M Date",
    (
    select
        max(e_date_reg)
    from
        f_enquiry
    where
        e_app_link = a_key
        and e_priority_link in (21)
        and e_date_reg >= '01/APR/2019'
        and e_date_reg <= '31/MAR/2020') as "N Date",
    (
    select
        max(e_date_reg)
    from
        f_enquiry
    where
        e_app_link = a_key
        and e_priority_link in (30)
        and e_date_reg >= '01/APR/2019'
        and e_date_reg <= '31/MAR/2020') as "O Date",
    (
    select
        max(e_date_reg)
    from
        f_enquiry
    where
        e_app_link = a_key
        and e_priority_link in (73)
        and e_date_reg >= '01/APR/2019'
        and e_date_reg <= '31/MAR/2020') as "P Date"
from
    f_enquiry
inner join f_applicant on
    e_app_link = a_key
inner join (
    select
        a_key as Comp_Link,
        e_priority_link as Enq_Type,
        e_date_reg as Enq_Date_Reg,
        event_type_link as GS_Type_Link,
        event_no as GS_No,
        event_date as GS_Date
    from
        f_applicant
    inner join f_enquiry on
        e_app_link = a_key
    inner join f_events on
        event_app_link = a_key
    where
        e_date_reg >= '01/APR/2019'
        and e_date_reg <= '31/MAR/2020'
        and event_date >= '01/APR/2019'
        and event_date <= '31/MAR/2020'
        and event_type = 1308
        and (
            (e_priority_link in (69,65) and event_type_link = 99) 
            or (e_priority_link = 34 and event_type_link = 144)
            or (e_priority_link in (50,27) and event_type_link in (400067,80))
            or (e_priority_link = 28 and event_type_link = 136)
            or (e_priority_link = 26 and event_type_link = 135)
            or (e_priority_link = 20 and event_type_link = 130)
            or (e_priority_link = 36 and event_type_link = 146)
            or (e_priority_link = 33 and event_type_link = 143)
            or (e_priority_link = 23 and event_type_link = 133)
            or (e_priority_link in (25,43) and event_type_link = 82)
            or (e_priority_link in (24,43) and event_type_link = 134)
            or (e_priority_link = 72 and event_type_link = 400297)
            or (e_priority_link in (14,22) and event_type_link in (400071,84))
            or (e_priority_link = 30 and event_type_link = 132)
            or (e_priority_link = 21 and event_type_link = 131)
            or (e_priority_link = 73 and event_type_link = 140)
        )
) as EandGS on Comp_Link = a_key

GO

WITH EandGS AS (
select
    a_key as Comp_Link,
    event_type_link as GS_Type_Link,
    event_date as GS_Date,
    event_no as GS_No,
    e_priority_link as Enq_Type,
    e_date_reg as Enq_Date_Reg
from
    f_applicant
inner join f_enquiry on
    e_app_link = a_key
inner join f_events on
    event_app_link = a_key
where
    e_date_reg >= '01/APR/2019'
    and e_date_reg <= '31/MAR/2020'
    and event_date >= '01/APR/2019'
    and event_date <= '31/MAR/2020'
    and event_type = 1308
    and ((e_priority_link in (69,65) and event_type_link = 99) 
    or (e_priority_link = 34 and event_type_link = 144)
    or (e_priority_link in (50,27) and event_type_link in (400067,80))
    or (e_priority_link = 28 and event_type_link = 136)
    or (e_priority_link = 26 and event_type_link = 135)
    or (e_priority_link = 20 and event_type_link = 130)
    or (e_priority_link = 36 and event_type_link = 146)
    or (e_priority_link = 33 and event_type_link = 143)
    or (e_priority_link = 23 and event_type_link = 133)
    or (e_priority_link in (25,43) and event_type_link = 82)
    or (e_priority_link in (24,43) and event_type_link = 134)
    or (e_priority_link = 72 and event_type_link = 400297)
    or (e_priority_link in (14,22) and event_type_link in (400071,84))
    or (e_priority_link = 30 and event_type_link = 132)
    or (e_priority_link = 21 and event_type_link = 131)
    or (e_priority_link = 73 and event_type_link = 140))
    ),
E AS (
select Comp_Link,Enq_Type,Enq_Date_Reg from EandGS --Used by pivot table to stop duplicate rows caused by columns not included
),
EP AS (
select Comp_Link,[14],[20],[21],[22],[23],[24],[25],[26],[27],[28],[30],[33],[34],[36],[43],[50],[65],[69],[72],[73]
from
E PIVOT (max(E.Enq_Date_Reg) FOR E.Enq_Type IN ([14],[20],[21],[22],[23],[24],[25],[26],[27],[28],[30],[33],[34],[36],[43],[50],[65],[69],[72],[73])) as pvt
)
select distinct EandGS.Comp_Link,GS_Type_Link,GS_Date,GS_No,[14],[20],[21],[22],[23],[24],[25],[26],[27],[28],[30],[33],[34],[36],[43],[50],[65],[69],[72],[73]
from EandGS
inner join EP on EP.Comp_Link = EandGS.Comp_Link
order by EandGS.Comp_Link asc

创建表格F\u查询(
E_KEY VARCHAR（15）不为空，
E_APP_LINK VARCHAR（15）不为空，
E_DATE_REG datetime不为空，
E_优先级_链接int不为空，
主键（E_键）
)
去
创建表F_事件(
事件编号：，
事件密钥VARCHAR（15），
事件应用链接VARCHAR（15），
事件日期时间，
事件类型int，
事件类型链接int，
主键（事件号）
)
去
创建表格F_申请人(
“A_KEY”VARCHAR（15）不为空，
主键（A_键）
)
去
在F_查询（E_键、E_应用程序链接、E_日期注册、E_优先级链接）中插入值
('303+1001','303+10019','2020-01-12 00:00:00.000',65)
,('303+1002','303+10019','2015-03-03 00:00:00.000',65)
,('303+1003','303+10019','2002-01-18 00:00:00.000',65)
,('303+1004','303+10029','2019-04-29 00:00:00.000',65)
,('303+1005','303+10029','2019-04-29 00:00:00.000',65)
,('303+1006','303+10029','2019-04-29 00:00:00.000',65)
,('303+1007','303+10029','2019-04-29 00:00:00.000',65)
,('303+1008','303+10029','2019-04-29 00:00:00.000',65)
,('303+1016','303+10029','2019-04-29 00:00:00.000',20)
,('303+1017','303+10029','2019-04-29 00:00:00.000',20)
,('303+1018','303+10029','2019-04-29 00:00:00.000',20)
,('303+1019','303+10019','2019-04-29 00:00:00.000',33)
,('303+1020','303+10019','2019-04-29 00:00:00.000',33)
,('303+1021','303+10019','2019-04-29 00:00:00.000',33)
去
插入F_事件（事件编号、事件密钥、事件应用链接、事件日期、事件类型、事件类型链接）值
(893693,'303+1001','303+10019','2019-11-13 00:00:00.000',1308,99)
,(840905,'303+1002','303+10019','2019-06-28 00:00:00.000',1308,99)
,(893694,'303+1003','303+10019','2019-11-13 00:00:00.000',1308,99)
,(893695,'303+1004','303+10029','2019-11-13 00:00:00.000',1308,99)
,(781122,'303+1005','303+10029','2019-02-14 00:00:00.000',1308,99)
,(784170,'303+1001','303+10029','2019-02-20 00:00:00.000',1308,99)
,(788124,'303+1002','303+10029','2019-03-01 00:00:00.000',1308,99)
,(795941,'303+1003','303+10029','2019-03-25 00:00:00.000',1308,99)
,(797944,'303+1004','303+10029','2019-03-27 00:00:00.000',1308,99)
,(802037,'303+1005','303+10029','2019-03-28 00:00:00.000',1308,99)
,(821342,'303+1013','303+10029','2019-05-10 00:00:00.000',1308,130)
,(826063,'303+1014','303+10029','2019-05-29 00:00:00.000',1308,130)
,(828412,'303+1015','303+10029','2019-05-30 00:00:00.000',1308,130)
,(831525,'303+1016','303+10029','2019-06-07 00:00:00.000',1308,130)
,(833202,'303+1017','303+10029','2019-06-11 00:00:00.000',1308,130)
,(837145,'303+1019','303+10019','2019-06-21 00:00:00.000',1308,143)
,(842768,'303+1020','303+10019','2019-07-19 00:00:00.000',1308,143)
,(845624,'303+1021','303+10019','2019-07-30 00:00:00.000',1308,143)
,(848579,'303+1022','303+10019','2019-08-06 00:00:00.000',1308,143)
,(851026,'303+1023','303+10019','2019-08-13 00:00:00.000',1308,143)
去
在F_申请人（a_键）值中插入
('303+10019'),
('303+10029')
去
选择
将a_键区分为Comp_链接，
EandGS.GS_类型_链接，
EandGS.GS_日期，
(
选择
最大值（e_date_reg）
从…起
f_查询
哪里
e_app_link=a_键
和（69,65）中的e_优先级链接
和e_date_reg>=“2019年4月1日”
e_date_reg='2019年4月1日'
e_date_reg='2019年4月1日'
e_date_reg='2019年4月1日'
e_date_reg='2019年4月1日'
e_date_reg='2019年4月1日'
e_date_reg='2019年4月1日'
e_date_reg='2019年4月1日'
e_date_reg='2019年4月1日'
e_date_reg='2019年4月1日'
e_date_reg='2019年4月1日'
e_date_reg='2019年4月1日'
e_date_reg='2019年4月1日'
e_date_reg='2019年4月1日'
e_date_reg='2019年4月1日'
e_date_reg='2019年4月1日'
e_date_reg='2019年4月1日'
e_date_reg='2019年4月1日'
事件日期='2019年4月1日'
e_date_reg='2019年4月1日'
问题中的事件日期示例数据和预期结果将真正澄清您的问题。它不是图像，@Sami，而是数据库文件。我代表OP从中复制了所有SQL。也许您最好使用交叉表。