In on result, get a number of dependency - mysql

Question

I have this MySQL DB :
MySQL in order to create DB + set of test value :
DROP DATABASE IF EXISTS test;
CREATE DATABASE test;
CREATE TABLE table_status ( Id TINYINT UNSIGNED NOT NULL AUTO_INCREMENT PRIMARY KEY, Status CHAR(27) NOT NULL) ENGINE=INNODB;
INSERT INTO table_status (Id, Status) VALUES (1, 'CREATED'), (2, 'UNSURE'), (3, 'RUNNING'), (4, 'BEGIN_ACTION_TRUE'), (5, 'STOPPED_ACTION_TRUE_OK'), (6, 'STOPPED_ACTION_TRUE_NOT_OK'), (7, 'BEGIN_ACTION_FALSE'), (8, 'STOPPED_ACTION_FALSE_OK'), (9, 'STOPPED_ACTION_FALSE_NOT_OK'), (10, 'STOPPED_NOT_OK'), (11, 'STOPPED_OK'), (12, 'CANCEL_REQUESTED'), (13, 'CANCELLED');
CREATE TABLE table_group ( Id BIGINT UNSIGNED NOT NULL AUTO_INCREMENT PRIMARY KEY, Status TINYINT UNSIGNED NOT NULL DEFAULT 1, CONSTRAINT fk_group_Status FOREIGN KEY (Status) REFERENCES table_status(Id)) ENGINE=INNODB;
CREATE TABLE table_task ( Id BIGINT UNSIGNED NOT NULL AUTO_INCREMENT PRIMARY KEY, IdGroup BIGINT UNSIGNED NOT NULL, Status TINYINT UNSIGNED NOT NULL DEFAULT 1, Command TEXT NOT NULL, CONSTRAINT fk_task_IdGroup FOREIGN KEY (IdGroup) REFERENCES table_group(Id) ON DELETE CASCADE, CONSTRAINT fk_task_Status FOREIGN KEY (Status) REFERENCES table_status(Id)) ENGINE=INNODB;
CREATE TABLE table_dependency ( IdBeforeTask BIGINT UNSIGNED NOT NULL, IdAfterTask BIGINT UNSIGNED NOT NULL, PRIMARY KEY (IdBeforeTask, IdAfterTask), CONSTRAINT fk_dependency_IdBeforeTask FOREIGN KEY (IdBeforeTask) REFERENCES table_task(Id) ON DELETE CASCADE, CONSTRAINT fk_dependency_IdAfterTask FOREIGN KEY (IdAfterTask) REFERENCES table_task(Id) ON DELETE CASCADE) ENGINE=INNODB;
INSERT INTO table_group (Id) VALUES (1), (2), (3), (4);
INSERT INTO table_task (IdGroup, Command) VALUES (1, "command_group_1_task_1"), (1, "command_group_1_task_2"), (1, "command_group_1_task_3"), (2, "command_group_2_task_1"), (2, "command_group_2_task_2"), (2, "command_group_2_task_3"), (3, "command_group_3_task_1"), (3, "command_group_3_task_2"), (3, "command_group_3_task_3"), (4, "command_group_4_task_1"), (4, "command_group_4_task_2"), (4, "command_group_4_task_3");
INSERT INTO table_dependency (IdBeforeTask, IdAfterTask) VALUES (1, 2), (2, 3), (4, 5), (5, 6), (7, 8), (8, 9), (10, 11), (11, 12);
The data in table_status is fixed to this :
INSERT INTO table_status (Id, Status) VALUES
(1, 'CREATED')
(2, 'UNSURE')
(3, 'RUNNING')
(4, 'BEGIN_ACTION_TRUE')
(5, 'STOPPED_ACTION_TRUE_OK')
(6, 'STOPPED_ACTION_TRUE_NOT_OK')
(7, 'BEGIN_ACTION_FALSE')
(8, 'STOPPED_ACTION_FALSE_OK')
(9, 'STOPPED_ACTION_FALSE_NOT_OK')
(10, 'STOPPED_NOT_OK')
(11, 'STOPPED_OK')
(12, 'CANCEL_REQUESTED')
(13, 'CANCELLED')
The purpose is to have a group containing task, each task can be dependant on another one.
What I want to obtain :
Group.Id, NB_TASK_TOTAL, NB_TASK_CREATED, NB_TASK_UNSURE
But there is a trap : The number of NB_TASK_CREATED is defined as : the number of task with status to CREATED and with no unresolved dependency.
An unresolved dependency is defined as a task depend on another wich have a Status != 11 (STOPPED_OK).
So if I have this :
table_dependency :
IdBeforeTask IdAfterTask
1 2
2 3
table_task :
Id IdGroup Status Command
1 1 1 command_1
2 1 1 command_2
3 1 1 command_3
I want to have
Group.Id, NB_TASK_TOTAL, NB_TASK_CREATED, NB_TASK_UNSURE
1 3 1 0
Here my unsucesful try :
SELECT
G.Id,
(SELECT COUNT(T.Id) FROM table_task as T WHERE T.IdGroup = G.Id),
(SELECT COUNT(T.Status = 1) FROM table_task as T WHERE T.IdGroup = G.Id AND T.Id NOT IN (SELECT IdAfterTask from table_dependency as D1 join table_task as T1 on T1.Id=D1.IdBeforeTask WHERE T1.Status!=11)),
(SELECT COUNT(T.Status = 2) FROM table_task as T WHERE T.IdGroup = G.Id)
FROM
table_group as G
The problem is I obtain this :
Group.Id, NB_TASK_TOTAL, NB_TASK_CREATED, NB_TASK_UNSURE
1 3 1 3
2 3 0 3
(I have 4 group, each group containing 3 task, all the task with Status = 1 (CREATED) and the dependency set in order to have just on "resolved" dependency so i should have
Group.Id, NB_TASK_TOTAL, NB_TASK_CREATED, NB_TASK_UNSURE
1 3 1 0
2 3 1 0
instead.
I'm a beginner in MySQL, and i'm lost on this one request.

Answer 1

This should do it for you:
SELECT T.IdGroup as Group_Id,
COUNT(T.IdGroup) as NB_TASK_TOTAL,
(SELECT COUNT(Tt.Id) FROM table_task Tt WHERE Tt.IdGroup = T.IdGroup AND Tt.Status = 1) as NB_TASK_CREATED,
(SELECT COUNT(Tt.Id) FROM table_task Tt WHERE Tt.IdGroup = T.IdGroup AND Tt.Status = 2 AND Tt.Id NOT IN (SELECT IdAfterTask from table_dependency as D1 join table_task as T1 on T1.Id=D1.IdBeforeTask WHERE T1.Status!=11)) as NB_TASK_UNSURE
FROM table_task T
GROUP BY T.IdGroup;