Jakob
7a172c6fdb
Refactor the database schema to better model the data relationships: Schema changes: - Removed cards.card_type (redundant, identical to card_number) - Removed transactions.card_id (unnecessary indirection) - Added transactions.card_number (stores card number for all transactions) - Made cards.customer_id NOT NULL (every card must belong to a customer) - Made transactions.customer_id nullable (NULL for anonymized transactions) Import logic changes: - Only create cards for known customers (transactions with customer_number) - Store card_number for ALL transactions (including anonymized) - Skip cards/customer creation for anonymized transactions Additional changes: - Add 'db reset' command to drop and recreate database - Update migration file with new schema This simplifies queries and better reflects the data model: - Cards table: authoritative mapping of card_number -> customer_id - Transactions table: stores all raw data including anonymized cards - Customer relationship via JOIN on card_number for known customers
47 lines
1.9 KiB
SQL
47 lines
1.9 KiB
SQL
-- Schema for rusty_petroleum
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-- Run after creating the database
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CREATE TABLE IF NOT EXISTS customers (
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id INT UNSIGNED AUTO_INCREMENT PRIMARY KEY,
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customer_number VARCHAR(50) NOT NULL UNIQUE,
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card_report_group TINYINT UNSIGNED NOT NULL DEFAULT 0,
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created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
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updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
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INDEX idx_customer_number (customer_number)
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) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;
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CREATE TABLE IF NOT EXISTS cards (
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id INT UNSIGNED AUTO_INCREMENT PRIMARY KEY,
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card_number VARCHAR(50) NOT NULL UNIQUE,
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customer_id INT UNSIGNED NOT NULL,
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created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
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updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
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INDEX idx_card_number (card_number),
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INDEX idx_customer_id (customer_id),
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FOREIGN KEY (customer_id) REFERENCES customers(id)
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) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;
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CREATE TABLE IF NOT EXISTS transactions (
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id BIGINT UNSIGNED AUTO_INCREMENT PRIMARY KEY,
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transaction_date DATETIME NOT NULL,
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batch_number VARCHAR(20) NOT NULL,
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amount DECIMAL(10,2) NOT NULL,
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volume DECIMAL(10,3) NOT NULL,
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price DECIMAL(8,4) NOT NULL,
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quality_code INT NOT NULL,
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quality_name VARCHAR(50) NOT NULL,
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card_number VARCHAR(50) NOT NULL,
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station VARCHAR(20) NOT NULL,
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terminal VARCHAR(10) NOT NULL,
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pump VARCHAR(10) NOT NULL,
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receipt VARCHAR(20) NOT NULL,
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control_number VARCHAR(20),
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customer_id INT UNSIGNED NULL,
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created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
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INDEX idx_transaction_date (transaction_date),
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INDEX idx_batch_number (batch_number),
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INDEX idx_customer_id (customer_id),
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INDEX idx_card_number (card_number),
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INDEX idx_station (station)
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) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;
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