給与管理システム新規作成
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admin
238
backend/sql/payroll_schema.sql
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238
backend/sql/payroll_schema.sql
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-- 給与システム用スキーマ
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-- Payroll System Schema
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-- ========================================
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-- 1. 従業員マスタ (Employees)
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-- ========================================
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CREATE TABLE IF NOT EXISTS employees (
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employee_id SERIAL PRIMARY KEY,
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employee_code VARCHAR(20) UNIQUE NOT NULL,
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name VARCHAR(100) NOT NULL,
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name_kana VARCHAR(100),
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birth_date DATE, -- 生年月日（介護保険判定に使用）
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gender VARCHAR(10), -- 性別
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email VARCHAR(100),
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phone VARCHAR(20),
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postal_code VARCHAR(10), -- 郵便番号
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address VARCHAR(200), -- 住所
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hire_date DATE NOT NULL,
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termination_date DATE,
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is_active BOOLEAN DEFAULT true,
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bank_name VARCHAR(100),
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bank_branch VARCHAR(100),
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bank_account_number VARCHAR(20),
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bank_account_type VARCHAR(20), -- 普通/当座
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notes TEXT,
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created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
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updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
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);
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COMMENT ON TABLE employees IS '従業員マスタ';
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COMMENT ON COLUMN employees.employee_code IS '従業員コード';
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COMMENT ON COLUMN employees.birth_date IS '生年月日（介護保険料計算に使用）';
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COMMENT ON COLUMN employees.gender IS '性別';
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COMMENT ON COLUMN employees.bank_account_type IS '口座種別: 普通/当座';
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-- ========================================
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-- 2. 扶養家族情報 (Dependents)
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-- ========================================
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CREATE TABLE IF NOT EXISTS dependents (
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dependent_id SERIAL PRIMARY KEY,
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employee_id INTEGER NOT NULL REFERENCES employees(employee_id) ON DELETE CASCADE,
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name VARCHAR(100) NOT NULL,
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relationship VARCHAR(20) NOT NULL, -- 配偶者/子/親/その他
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birth_date DATE,
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is_spouse BOOLEAN DEFAULT false,
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is_disabled BOOLEAN DEFAULT false, -- 障害者控除対象
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income_amount DECIMAL(12, 2) DEFAULT 0, -- 年間所得
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valid_from DATE NOT NULL,
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valid_to DATE,
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created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
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updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
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);
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COMMENT ON TABLE dependents IS '扶養家族情報';
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COMMENT ON COLUMN dependents.relationship IS '続柄: 配偶者/子/親/その他';
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COMMENT ON COLUMN dependents.is_disabled IS '障害者控除対象フラグ';
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COMMENT ON COLUMN dependents.income_amount IS '年間所得額';
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-- ========================================
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-- 3. 給与基本設定 (Salary Settings)
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-- ========================================
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CREATE TABLE IF NOT EXISTS salary_settings (
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setting_id SERIAL PRIMARY KEY,
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employee_id INTEGER NOT NULL REFERENCES employees(employee_id) ON DELETE CASCADE,
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base_salary DECIMAL(12, 2) NOT NULL DEFAULT 0,
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hourly_rate DECIMAL(10, 2),
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employment_type VARCHAR(20) NOT NULL, -- 正社員/契約社員/パート/アルバイト
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payment_type VARCHAR(20) NOT NULL, -- 月給/時給/日給
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commute_allowance DECIMAL(12, 2) DEFAULT 0,
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other_allowance DECIMAL(12, 2) DEFAULT 0,
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valid_from DATE NOT NULL,
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valid_to DATE,
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created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
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updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
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CONSTRAINT uc_employee_valid_from UNIQUE (employee_id, valid_from)
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);
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COMMENT ON TABLE salary_settings IS '給与基本設定';
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COMMENT ON COLUMN salary_settings.employment_type IS '雇用形態: 正社員/契約社員/パート/アルバイト';
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COMMENT ON COLUMN salary_settings.payment_type IS '支給形態: 月給/時給/日給';
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-- ========================================
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-- 4. 社会保険料率マスタ (Insurance Rates)
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-- ========================================
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CREATE TABLE IF NOT EXISTS insurance_rates (
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rate_id SERIAL PRIMARY KEY,
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rate_type VARCHAR(50) NOT NULL, -- 健康保険/厚生年金/雇用保険/労災保険
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employee_rate DECIMAL(6, 4) NOT NULL, -- 従業員負担率
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employer_rate DECIMAL(6, 4) NOT NULL, -- 会社負担率
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valid_from DATE NOT NULL,
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valid_to DATE,
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notes TEXT,
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created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
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updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
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);
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COMMENT ON TABLE insurance_rates IS '社会保険料率マスタ';
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COMMENT ON COLUMN insurance_rates.rate_type IS '保険種類: 健康保険/厚生年金/雇用保険/労災保険';
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COMMENT ON COLUMN insurance_rates.employee_rate IS '従業員負担率';
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COMMENT ON COLUMN insurance_rates.employer_rate IS '会社負担率';
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-- ========================================
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-- 5. 所得税率表 (Income Tax Table)
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-- ========================================
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CREATE TABLE IF NOT EXISTS income_tax_table (
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tax_id SERIAL PRIMARY KEY,
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monthly_income_from DECIMAL(12, 2) NOT NULL,
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monthly_income_to DECIMAL(12, 2) NOT NULL,
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dependents_count INTEGER NOT NULL DEFAULT 0, -- 扶養家族人数
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tax_amount DECIMAL(10, 2) NOT NULL,
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valid_from DATE NOT NULL,
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valid_to DATE,
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created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
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);
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COMMENT ON TABLE income_tax_table IS '源泉所得税額表';
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COMMENT ON COLUMN income_tax_table.dependents_count IS '扶養家族人数';
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-- ========================================
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-- 6. 月次給与計算ヘッダー (Monthly Payroll Header)
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-- ========================================
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CREATE TABLE IF NOT EXISTS monthly_payroll (
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payroll_id SERIAL PRIMARY KEY,
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employee_id INTEGER NOT NULL REFERENCES employees(employee_id),
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payroll_year INTEGER NOT NULL,
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payroll_month INTEGER NOT NULL,
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payment_date DATE NOT NULL,
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status VARCHAR(20) DEFAULT 'draft', -- draft/calculated/approved/paid
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-- 勤怠情報
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working_days DECIMAL(5, 2) DEFAULT 0,
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working_hours DECIMAL(6, 2) DEFAULT 0,
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overtime_hours DECIMAL(6, 2) DEFAULT 0,
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holiday_hours DECIMAL(6, 2) DEFAULT 0,
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late_hours DECIMAL(6, 2) DEFAULT 0,
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absent_days DECIMAL(5, 2) DEFAULT 0,
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-- 支給項目
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base_salary DECIMAL(12, 2) DEFAULT 0,
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overtime_pay DECIMAL(12, 2) DEFAULT 0,
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holiday_pay DECIMAL(12, 2) DEFAULT 0,
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commute_allowance DECIMAL(12, 2) DEFAULT 0,
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other_allowance DECIMAL(12, 2) DEFAULT 0,
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total_payment DECIMAL(12, 2) DEFAULT 0,
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-- 控除項目
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health_insurance DECIMAL(12, 2) DEFAULT 0,
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care_insurance DECIMAL(12, 2) DEFAULT 0, -- 介護保険（40歳以上）
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pension_insurance DECIMAL(12, 2) DEFAULT 0,
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employment_insurance DECIMAL(12, 2) DEFAULT 0,
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income_tax DECIMAL(12, 2) DEFAULT 0,
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resident_tax DECIMAL(12, 2) DEFAULT 0,
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other_deduction DECIMAL(12, 2) DEFAULT 0,
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total_deduction DECIMAL(12, 2) DEFAULT 0,
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-- 差引支給額
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net_payment DECIMAL(12, 2) DEFAULT 0,
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notes TEXT,
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calculated_at TIMESTAMP,
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calculated_by VARCHAR(100),
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approved_at TIMESTAMP,
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approved_by VARCHAR(100),
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created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
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updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
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CONSTRAINT uc_payroll_employee_month UNIQUE (employee_id, payroll_year, payroll_month)
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);
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COMMENT ON TABLE monthly_payroll IS '月次給与計算';
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COMMENT ON COLUMN monthly_payroll.status IS 'ステータス: draft/calculated/approved/paid';
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-- ========================================
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-- 7. 給与明細項目詳細 (Payroll Detail Items)
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-- ========================================
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CREATE TABLE IF NOT EXISTS payroll_details (
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detail_id SERIAL PRIMARY KEY,
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payroll_id INTEGER NOT NULL REFERENCES monthly_payroll(payroll_id) ON DELETE CASCADE,
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item_type VARCHAR(20) NOT NULL, -- payment/deduction
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item_code VARCHAR(50) NOT NULL,
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item_name VARCHAR(100) NOT NULL,
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amount DECIMAL(12, 2) NOT NULL,
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notes TEXT,
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created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
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);
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COMMENT ON TABLE payroll_details IS '給与明細項目詳細';
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COMMENT ON COLUMN payroll_details.item_type IS '項目区分: payment/deduction';
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-- ========================================
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-- インデックス作成
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-- ========================================
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CREATE INDEX idx_employees_code ON employees(employee_code);
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CREATE INDEX idx_employees_active ON employees(is_active);
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CREATE INDEX idx_dependents_employee ON dependents(employee_id);
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CREATE INDEX idx_salary_settings_employee ON salary_settings(employee_id);
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CREATE INDEX idx_salary_settings_valid ON salary_settings(valid_from, valid_to);
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CREATE INDEX idx_insurance_rates_valid ON insurance_rates(valid_from, valid_to);
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CREATE INDEX idx_income_tax_valid ON income_tax_table(valid_from, valid_to);
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CREATE INDEX idx_payroll_employee_year_month ON monthly_payroll(employee_id, payroll_year, payroll_month);
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CREATE INDEX idx_payroll_status ON monthly_payroll(status);
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CREATE INDEX idx_payroll_details_payroll ON payroll_details(payroll_id);
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-- ========================================
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-- トリガー: 更新日時の自動更新
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-- ========================================
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CREATE OR REPLACE FUNCTION update_updated_at()
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RETURNS TRIGGER AS $$
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BEGIN
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NEW.updated_at = CURRENT_TIMESTAMP;
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RETURN NEW;
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END;
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$$ LANGUAGE plpgsql;
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CREATE TRIGGER trg_employees_updated_at BEFORE UPDATE ON employees
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FOR EACH ROW EXECUTE FUNCTION update_updated_at();
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CREATE TRIGGER trg_dependents_updated_at BEFORE UPDATE ON dependents
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FOR EACH ROW EXECUTE FUNCTION update_updated_at();
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CREATE TRIGGER trg_salary_settings_updated_at BEFORE UPDATE ON salary_settings
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FOR EACH ROW EXECUTE FUNCTION update_updated_at();
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CREATE TRIGGER trg_insurance_rates_updated_at BEFORE UPDATE ON insurance_rates
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FOR EACH ROW EXECUTE FUNCTION update_updated_at();
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CREATE TRIGGER trg_monthly_payroll_updated_at BEFORE UPDATE ON monthly_payroll
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FOR EACH ROW EXECUTE FUNCTION update_updated_at();
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-- ========================================
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-- 初期データ: 保険料率 (2026年度)
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-- ========================================
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INSERT INTO insurance_rates (rate_type, employee_rate, employer_rate, valid_from, notes) VALUES
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('健康保険', 0.0500, 0.0500, '2026-01-01', '健康保険料率 10.00% (労使折半)'),
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('介護保険', 0.0091, 0.0091, '2026-01-01', '介護保険料率 1.82% (労使折半、40歳以上対象)'),
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('厚生年金', 0.0915, 0.0915, '2026-01-01', '厚生年金保険料率 18.30% (労使折半)'),
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('雇用保険', 0.0060, 0.0095, '2026-01-01', '雇用保険料率 従業員0.6% 事業主0.95%'),
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('労災保険', 0.0000, 0.0030, '2026-01-01', '労災保険料率 事業主のみ0.3%');
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