19 lines
1.2 KiB
MySQL
19 lines
1.2 KiB
MySQL
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-- Связь сотрудник — участки (многие ко многим): один сотрудник может быть назначен на несколько участков
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CREATE TABLE IF NOT EXISTS employee_districts (
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employee_id VARCHAR(50) NOT NULL REFERENCES employees(id) ON DELETE CASCADE,
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district_id VARCHAR(50) NOT NULL REFERENCES districts(id) ON DELETE CASCADE,
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created_at TIMESTAMPTZ NOT NULL DEFAULT NOW(),
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PRIMARY KEY (employee_id, district_id)
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);
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CREATE INDEX IF NOT EXISTS idx_employee_districts_employee ON employee_districts(employee_id);
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CREATE INDEX IF NOT EXISTS idx_employee_districts_district ON employee_districts(district_id);
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COMMENT ON TABLE employee_districts IS 'Назначения сотрудников на участки; один сотрудник может быть на нескольких участках';
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-- Перенос существующих назначений из employees.assigned_district_id
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INSERT INTO employee_districts (employee_id, district_id)
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SELECT id, assigned_district_id
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FROM employees
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WHERE assigned_district_id IS NOT NULL AND assigned_district_id <> ''
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ON CONFLICT (employee_id, district_id) DO NOTHING;
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