Columns
| Column | Type | Size | Nulls | Auto | Default | Children | Parents | Comments | |||
|---|---|---|---|---|---|---|---|---|---|---|---|
| draw_id | uuid | 2147483647 | null |
|
|
Жеребьевка (FK на draw_results) |
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| giver_participant_id | uuid | 2147483647 | null |
|
|
Даритель (FK на box_participants) |
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| receiver_participant_id | uuid | 2147483647 | null |
|
|
Получатель (FK на box_participants) |
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| id | uuid | 2147483647 | null |
|
|
Уникальный идентификатор пары (UUID) |
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| created_at | timestamptz | 35,6 | now() |
|
|
Дата создания пары |
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| updated_at | timestamptz | 35,6 | now() |
|
|
Дата последнего обновления |
Indexes
| Constraint Name | Type | Sort | Column(s) |
|---|---|---|---|
| draw_pairs_pkey | Primary key | Asc | id |
| ix_draw_pairs_draw_id | Performance | Asc | draw_id |
| ix_draw_pairs_giver_participant_id | Performance | Asc | giver_participant_id |
| ix_draw_pairs_receiver_participant_id | Performance | Asc | receiver_participant_id |
| uq_draw_pairs_giver | Must be unique | Asc/Asc | draw_id + giver_participant_id |
| uq_draw_pairs_receiver | Must be unique | Asc/Asc | draw_id + receiver_participant_id |
Check Constraints
| Constraint Name | Constraint |
|---|---|
| chk_draw_pairs_different_participants | (giver_participant_id <> receiver_participant_id) |
Relationships
Close relationships within degrees of separation
