Я хочу сгруппировать запись из нескольких таблиц.
Пример данных:
create table UserTable (
Id integer not null,
Name varchar(12) not null
);
insert into UserTable values (1, 'A B');
insert into UserTable values (2, 'A C');
insert into UserTable values (3, 'A C A C');
insert into UserTable values (4, 'A C C');
insert into UserTable values (5, 'A C B');
insert into UserTable values (6, 'A C C');
insert into UserTable values (7, 'A C D');
insert into UserTable values (8, 'A C E');
insert into UserTable values (9, 'A C F');
create table LogTable (
LogId integer not null,
Username varchar(12) not null,
Event varchar(12) not null
);
insert into LogTable values (1, 'A C A C', 'Read');
insert into LogTable values (2, 'A C F', 'Write');
insert into LogTable values (3, 'A C F', 'Read');
insert into LogTable values (4, 'A C C', 'Update');
insert into LogTable values (5,'A C C', 'Read');
insert into LogTable values (6,'A C F', 'Read');
insert into LogTable values (7,'A C F', 'Update');
insert into LogTable values (7,'A C F', 'Write');
insert into LogTable values (7,'A C E','Update');
insert into LogTable values (7,'A C F', 'Delete');
insert into LogTable values (10,'A C B', 'Delete');
insert into LogTable values (11, 'A C F','Copy');
insert into LogTable values (12, 'A C B','Read');
insert into LogTable values (13, 'A C F','Update');
insert into LogTable values (14, 'A C F','Copy');
insert into LogTable values (15, 'A C F','Read');
insert into LogTable values (16, 'A C F','Update');
insert into LogTable values (17, 'A C F','Copy');
insert into LogTable values (18, 'A C C','Read');
insert into LogTable values (19, 'A C D','Update');
create table Activity (
Id integer not null,
ActivityType varchar(12) not null,
UserId varchar(12) not null
);
insert into Activity values (1, 'Videos', 8);
insert into Activity values (2, 'Text', 7);
insert into Activity values (3, 'Page', 7);
insert into Activity values (4, 'Text', 7);
insert into Activity values (5, 'Text', 9);
insert into Activity values (6, 'Chat', 8);
insert into Activity values (7, 'Chat', 5);
insert into Activity values (7, 'File', 8);
insert into Activity values (7, 'Videos', 1);
insert into Activity values (7, 'Text', 4);
insert into Activity values (10, 'Image', 4);
insert into Activity values (11, 'Image', 6);
insert into Activity values (12, 'Chat', 3);
insert into Activity values (13, 'Chat', 2);
insert into Activity values (14, 'Page', 1);
insert into Activity values (15, 'Vidoes',1);
insert into Activity values (16, 'Vidoes',6);
insert into Activity values (17, 'Vidoes',5);
insert into Activity values (18, 'Vidoes',5);
insert into Activity values (19, 'Chat', 5);
Что я пробовал:
SELECT UT.Id,UT.Name,
SUM(CASE
WHEN LT.Event = 'Read' THEN 1
ELSE 0 END
) AS [USER READ],
SUM(CASE
WHEN LT.Event = 'Delete' THEN 1
ELSE 0 END
) AS [USER DELETE],
SUM(CASE
WHEN AC.ActivityType = 'Videos' THEN 1
WHEN AC.ActivityType = 'Text' THEN 1
WHEN AC.ActivityType = 'Page' THEN 1
WHEN AC.ActivityType = 'Image' THEN 1
ELSE 0 END
) AS [LEARNING ACTIVITY],
SUM(CASE WHEN AC.ActivityType = 'Chat' THEN 1 ELSE 0 END) AS [Chat]
FROM UserTable UT
LEFT JOIN Activity AC ON UT.Id = AC.UserId
LEFT JOIN LogTable LT ON LT.Username = UT.Name
GROUP BY UT.Id, UT.Name
Желаемый результат:
Id | Name | LEARNING ACTIVITY | Chat | USER READ | USER DELETE|
------------------------------------------------------------------------
1 | A B | 2 | 0 | 0 | 0 |
2 | A C | 0 | 1 | 0 | 0 |
3 | A C A C | 0 | 1 | 1 | 0 |
4 | A C C | 2 | 0 | 2 | 0 |
5 | A C B | 0 | 2 | 1 | 1 |
6 | A C R | 1 | 0 | 0 | 0 |
7 | A C D | 3 | 0 | 0 | 0 |
8 | A C E | 1 | 1 | 0 | 0 |
9 | A C F | 1 | 0 | 3 | 1 |
Как я могу объединить две таблицы, которые не связаны, и сгруппировать их с помощью Id
и Name
?
- Присоединиться и агрегировать Активность с Пользователи
- Учебная активность - это сумма (видео, текст, страница и изображение) в виде ActivityType
- Чат все строки с Chat как ActivityType
Присоединение и агрегирование
Таблица журналов с
Пользователи