Question

早上好。

我被要求根据轮胎更换和车辆检查做一份报告。

我在帖子的底部附上了不同的部分。

但我基本上要做的是找出轮胎在资产上的特定位置有多长时间以及轮胎何时穿上和另一轮胎取代它之间的差异等。

我不知道从哪里开始这个查询，因为我一般都是sql server的新手。

我在sql中的表是

    CREATE TABLE assets_tyre_change_header
( id INT NOT NULL IDENTITY(1,1),
  change_date date not null,
  asset_id varchar(50) not null,
  odometer_hour varchar(50),
  completed tinyint,
  comment text,
  CONSTRAINT assets_tyre_change_pk PRIMARY KEY (id)
);

CREATE TABLE assets_tyre_change_details
( id INT NOT NULL IDENTITY(1,1),
  tyre_change_id INT,
  tyre_id varchar(50) not null,
  wheel_position varchar(50) not null,
  tread_depth int not null,
  minimum_depth int not null
  CONSTRAINT assets_tyre_change_detail_pk PRIMARY KEY (id)
);

create table assets_tyre_inspection_header
( id INT NOT NULL IDENTITY(1,1),
  inspection_date date not null,
  asset_id varchar(50) not null,
  odometer_hour varchar(50),
  completed tinyint,
  comment text,
  CONSTRAINT assets_tyre_inspection_pk PRIMARY KEY (id)
);

CREATE TABLE assets_tyre_inspection_details
( id INT NOT NULL IDENTITY(1,1),
  tyre_inspection_id INT,
  tyre_id varchar(50) not null,
  wheel_position varchar(50) not null,
  tread_depth int not null
  CONSTRAINT assets_tyre_inspection_detail_pk PRIMARY KEY (id)
);

我的下一步是从这些表中提取基本详细信息作为结果表

附加sql

select * from (
(select 'change' as type,
    tyre_id,
    asset_id,
    wheel_position,
    min(convert(int,odometer_hour))as min_oh,
    max(convert(int,odometer_hour))as max_oh,
    min(tread_depth)as min_depth,
    min(change_date) as transdate 
    from assetsandfuel.dbo.assets_tyre_change_details as c_details
    join assetsandfuel.dbo.assets_tyre_change_header as c_header on c_header.id = c_details.tyre_change_id
    group by asset_id,tyre_id,wheel_position
)
union
(select 'inspect' as type,
tyre_id,
asset_id,
wheel_position,
min(convert(int,odometer_hour))as min_oh,
max(convert(int,odometer_hour))as max_oh,
min(tread_depth)as min_depth,
min(inspection_date) as transdate 
from assetsandfuel.dbo.assets_tyre_inspection_details as i_details
join assetsandfuel.dbo.assets_tyre_inspection_header as i_header on i_header.id = i_details.tyre_inspection_id
group by asset_id,tyre_id,wheel_position
)
)as report_table
order by transdate;

这导致以下记录作为表结果传递

type    tyre    asset           position    min max    depth    transdate
change  T001    TestV            4         1489 1489    15     2016-04-01
change  T002    TestV            6         1489 1489    15     2016-04-01
change  F146    Forklift001      3         6900 6900    30     2016-04-02
change  F147    Forklift001      2         6900 6900    30     2016-04-02
change  T001    TestV            6         2800 2800    12     2016-04-08
change  T002    TestV            4         2800 2800    10     2016-04-08
change  T003    TestV            12        2800 2800    15     2016-04-08
inspect F146    Forklift001      3         6920 6920    27     2016-04-09
inspect F147    Forklift001      2         6920 6920    15     2016-04-09
inspect T001    TestV            6         3400 3400    9      2016-04-10
inspect T003    TestV            12        3400 3400    12     2016-04-10
change  F148    Forklift001      1         6950 6950    30     2016-04-11
change  F149    Forklift001      4         6950 6950    30     2016-04-11

根据早期结果在Sql Set中获取下一个关联记录结果

0 个答案: