mirror of
https://github.com/sharkdp/bat.git
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267 lines
8.9 KiB
SQL
267 lines
8.9 KiB
SQL
-- interships
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create table interships
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(intership_id number(7) constraint intership_id_pk primary key,
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name varchar2(50),
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start_date date,
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end_date date);
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insert into interships
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values
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(1,
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'Leaderator 2019',
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to_date('15/02/2019', 'DD/MM/YYYY'),
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to_date('01/09/2019', 'DD/MM/YYYY'));
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insert into interships
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(intership_id, name, start_date)
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values
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(2, 'Leaderator 2020', to_date('10/02/2019', 'DD/MM/YYYY'));
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commit;
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-- directions
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create table directions
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(direction_id number(7) constraint direction_id_pk primary key,
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name varchar2(50));
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insert into directions values (1, 'Data Science');
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insert into directions values (2, 'Oracle Development');
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commit;
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-- participants
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create table participants
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(participant_id number(7) constraint participant_id_pk primary key,
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first_name varchar2(25),
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last_name varchar2(25),
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personal_id number(11),
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intership_id number(7) constraint participant_inter_id_fk references interships (intership_id),
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direction_id number(7) constraint participant_direct_id_fk references directions (direction_id),
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constraint personal_id_unique unique (personal_id));
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insert into participants
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values
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(1, 'Erekle', 'Tvinadze', 01011234567, 1, 1);
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insert into participants
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values
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(2, 'Mariami', 'Chakhvadze', 01011234568, 2, 2);
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commit;
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-- hiring_layer_types
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create table hiring_layer_types
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(layer_type_id number(7) constraint layer_id_pk primary key,
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type varchar2(50));
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insert into hiring_layer_types values (1, 'GMAT');
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insert into hiring_layer_types values (2, 'Algorithms');
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insert into hiring_layer_types values (3, 'Interview');
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commit;
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-- hiring_layers
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create table hiring_layers
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(layer_id number(7) constraint layer_pk primary key,
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layer_type_id number(7) constraint layer_type_fk references hiring_layer_types (layer_type_id),
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participant_id number(7) constraint participant_id_fk references participants (participant_id),
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result number(3));
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insert into hiring_layers values (1, 1, 1, 52);
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insert into hiring_layers values (2, 1, 2, 80);
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insert into hiring_layers values (3, 2, 2, 75);
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insert into hiring_layers values (4, 3, 2, 100);
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commit;
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-- subjects
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create table subjects
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(subject_id number(7) constraint subject_id_pk primary key,
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name varchar2(100),
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minimum_score number(3));
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insert into subjects values (1, 'SQL', 70);
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insert into subjects values (2, 'Machine Learning', 70);
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commit;
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-- direction_subjects
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create table direction_subjects
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(direction_subject_id number(7) constraint direct_sub_id primary key,
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direction_id number(7) constraint direct_id_fk references directions (direction_id),
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subject_id number(7) constraint subject_id_fk references subjects (subject_id));
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insert into direction_subjects values (1, 2, 1);
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insert into direction_subjects values (2, 1, 1);
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insert into direction_subjects values (3, 1, 2);
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commit;
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-- component_types
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create table component_types
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(component_type_id number(7) constraint com_type_id_pk primary key,
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type varchar2(50));
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insert into component_types values (1, 'Homework');
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insert into component_types values (2, 'Quiz');
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commit;
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-- components
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create table components
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(component_id number(7) constraint component_id_pk primary key,
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subject_id number(7) constraint sub_id_fk references subjects (subject_id),
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minimum_score number(3),
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component_type_id number(7) constraint com_type_id_fk references component_types (component_type_id),
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weight number(3));
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insert into components values (1, 1, 60, 1, 20);
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insert into components values (2, 2, 65, 2, 50);
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commit;
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-- results
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create table results
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(result_id number(7) constraint result_id_pk primary key,
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issue_date date,
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grade number(3),
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participant_id number(7) constraint particip_id_fk references participants (participant_id),
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component_id number(7) constraint component_id_fk references components (component_id));
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insert into results
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values
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(1, to_date('04/05/2020', 'DD/MM/YYYY'), 87, 2, 2);
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commit;
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-- learning_material_types
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create table learning_material_types
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(material_type_id number(7) constraint lear_material_id_pk primary key,
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type varchar(50));
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insert into learning_material_types values (1, 'Book');
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insert into learning_material_types values (2, 'PPT');
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insert into learning_material_types values (3, 'Youtube Video');
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commit;
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-- learning_materials
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create table learning_materials
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(learning_material_id number(7),
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url varchar2(3000),
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subject_id number(7) constraint subj_id_fk references subjects (subject_id),
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material_type_id number(7) constraint material_type_id_fk references learning_material_types (material_type_id));
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insert into learning_materials values (1, 'www.youtube.com', 1, 3);
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commit;
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-- sessions
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create table sessions
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(session_id number(7) constraint session_id_pk primary key,
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start_date date,
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end_date date,
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intership_id number(7) constraint inter_idd_fk references interships (intership_id),
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direction_id number(7) constraint direct_fk references directions (direction_id),
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subject_id number(7) constraint subject_fk references subjects (subject_id));
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-- attendances
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create table attendances
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(attendance_id number(7) constraint attend_id_pk primary key,
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participant_id number(7) constraint participant_fk references participants (participant_id),
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session_id number(7) constraint session_id_fk references sessions (session_id),
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status varchar2(25));
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/*
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შექმენით view სადაც იქნება სტაჟირების შესახებ ინფორმაცია:
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სახელი,
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დაწყების თარიღი,
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დასრულების თარიღი,
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მონაწილეების რაოდენობა.
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*/
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create view intership_info
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as select i.name, i.start_date, i.end_date, (select count(participant_id) from participants p where p.intership_id = i.intership_id) number_of_participants
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from interships i;
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/*
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შექმენით view სადაც იქნება მონაწილეებზე ინფორმაცია:
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სტაჟირების სახელი,
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მონაწილის სახელი,
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მიმართულება,
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შერჩევის რამდენი ეტაპი გაიარა,
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სტაჟირების სტატუსი(გაიარა, ვერ გაიარა, მიმდინარე,ვერ მოხვდა სტაჟირებაზე)
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*/
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create view participant_info
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as select i.name intership, p.first_name, p.last_name, d.name direction,
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(select count(h2.participant_id) from hiring_layers h2 where h2.participant_id = p.participant_id) number_of_layers,
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case when p.direction_id is null then 'Rejected'
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when i.end_date is null then 'Present'
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when (select h2.result from hiring_layers h2 join hiring_layer_types l on h2.layer_type_id = l.layer_type_id where h2.participant_id = p.participant_id and l.type = 'Intership') > (select minimum_score from subjects) then 'Passed'
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else 'Failed'
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end status
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from interships i,
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participants p,
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directions d
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where i.intership_id = p.intership_id
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and (d.direction_id = p.direction_id or p.direction_id is null);
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/*
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შექნენით view სადაც იქნება მიმართულებებზე ინფორმაცია:
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მიმართულების სახელი,
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რა საგნები ისწავლება
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*/
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create view direction_info
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as select d.name direction, s.name subject
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from directions d,
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direction_subjects ds,
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subjects s
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where d.direction_id = ds.direction_id
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and ds.subject_id = s.subject_id;
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/*
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შექმენით view სადც იქნება საგნების ინფორმაცია:
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საგნის სახელი,
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საგნის ზღვარი,
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შეფასების კომპონენტები(სახელი, ზღვარი , წონა).
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*/
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create view subject_info
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as select s.name, s.minimum_score subject_min_score, ct.type, c.minimum_score component_min_score, c.weight
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from subjects s,
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component_types ct,
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components c
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where s.subject_id = c.subject_id
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and c.component_type_id = ct.component_type_id;
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/*
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შექმენით view დასწრების აღრიცხვა მონაწილეების მიხედვით:
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სტაჟირებაზე მიმართულების მიხედვით:
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რამდენი ჩატარდა,
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რამდენს დაესწრო,
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რამდენს არ დაესწრო.
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*/
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create view attendance_info
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as select p.first_name, p.last_name,
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(select count(s2.session_id) from sessions s2 where s2.direction_id = p.direction_id) lectures,
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(select count(a2.attendance_id) from attendances a2 where a2.participant_id = p.participant_id and a2.status = 'Present') present,
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(select count(a2.attendance_id) from attendances a2 where a2.participant_id = p.participant_id and a2.status = 'Absent') absent
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from participants p,
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attendances a,
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sessions s
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where p.participant_id = a.participant_id
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and a.session_id = s.session_id;
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