将 PostgreSQL 转换为 SQLite

-- Written by IntoSQL from a PostgreSQL dump. Load it with: sqlite3 -bail <database> < <file>
PRAGMA foreign_keys = OFF;
PRAGMA synchronous = OFF;
BEGIN;

CREATE TABLE customers ( -- People who bought at least once
    id INTEGER PRIMARY KEY AUTOINCREMENT,
    name TEXT NOT NULL,
    email TEXT NOT NULL,
    country VARCHAR(2) DEFAULT 'US' NOT NULL,
    is_active INTEGER DEFAULT 1 NOT NULL,
    tags TEXT NOT NULL,
    signed_up DATE,
    created_at TIMESTAMP DEFAULT (strftime('%Y-%m-%d %H:%M:%f', 'now')) NOT NULL,
    CONSTRAINT customers_is_active_check CHECK (is_active IN (0, 1))
);

CREATE TABLE orders (
    id INTEGER PRIMARY KEY AUTOINCREMENT,
    customer_id INTEGER NOT NULL,
    status TEXT DEFAULT 'pending' NOT NULL,
    total DECIMAL(10,2) NOT NULL,
    items INTEGER DEFAULT 1 NOT NULL,
    ordered_at DATETIME NOT NULL,
    shipped_at DATETIME,
    note TEXT,
    details TEXT,
    delivery TEXT,
    CONSTRAINT orders_status_check CHECK (status IN ('pending', 'paid', 'shipped', 'cancelled')),
    CONSTRAINT orders_orders_total_check CHECK (total >= (0)),
    CONSTRAINT orders_customer_id_fkey FOREIGN KEY (customer_id) REFERENCES customers (id)
);

INSERT INTO customers (id, name, email, country, is_active, tags, signed_up, created_at) VALUES
(1,'Ana Martínez','ana@example.com','MX',1,'["vip"]','2023-01-15','2023-01-15 10:24:00'),
(2,'Zoë Müller','zoe@example.de','DE',1,'[]','2023-02-03','2023-02-03 08:11:42'),
(3,'José Peña','jose@example.es','ES',0,'["wholesale","late payer"]','2023-03-21','2023-03-21 19:05:17'),
(4,'李雷','lilei@example.cn','CN',1,'[]','2023-05-09','2023-05-09 02:40:00'),
(5,'Noah O''Brien','noah@example.ie','IE',1,'[]',NULL,'2023-06-30 14:00:00'),
(6,'Amélie Laurent','amelie@example.fr','FR',1,'["vip"]','2024-01-02','2024-01-02 09:30:00'),
(7,'Ravi Patel','ravi@example.in','IN',0,'[]','2024-02-29','2024-02-29 23:59:59'),
(8,'Sofia Rossi 🌻','sofia@example.it','IT',1,'[]','2024-04-12','2024-04-12 12:12:12');
INSERT INTO orders (id, customer_id, status, total, items, ordered_at, shipped_at, note, details, delivery) VALUES
(1,1,'shipped',129.90,3,'2024-03-01 10:00:00','2024-03-02 16:30:00',NULL,'{"gift": false}','1 day 06:30:00'),
(2,2,'paid',54.00,1,'2024-03-02 11:15:00',NULL,'Gift wrap 🎁','{"gift": true, "wrap": "red"}',NULL),
(3,1,'cancelled',12.50,1,'2024-03-03 09:45:00',NULL,'Customer changed their mind',NULL,NULL),
(4,4,'shipped',980.00,12,'2024-03-05 02:10:00','2024-03-07 08:00:00','请小心轻放','{"fragile": true}','2 days 05:50:00'),
(5,5,'pending',45.75,2,'2024-03-08 17:20:00',NULL,'Leave at the door; ring twice',NULL,NULL),
(6,6,'shipped',310.40,5,'2024-03-10 13:00:00','2024-03-11 09:00:00','Fragile: "glass"','{"fragile": true}','20:00:00'),
(7,8,'paid',76.20,2,'2024-03-11 18:45:00',NULL,NULL,NULL,NULL),
(8,2,'shipped',19.99,1,'2024-03-12 08:00:00',NULL,'Shipped date set to infinity by an old import',NULL,NULL),
(9,3,'shipped',64.00,2,'2024-03-14 15:30:00','2024-03-15 10:00:00','Two parcels','{"parcels": [1, 2]}','18:30:00'),
(10,7,'paid',1499.00,1,'2024-03-15 21:05:00',NULL,'C:\Users\ravi\invoice.pdf',NULL,NULL);

-- Indexes, triggers and counters, after the rows so each index builds once.
CREATE UNIQUE INDEX customers_customers_email_key ON customers (email);
CREATE INDEX orders_idx_orders_customer ON orders (customer_id);
CREATE INDEX orders_idx_orders_status_date ON orders (status, ordered_at);
UPDATE sqlite_sequence SET seq = max(seq, 1000) WHERE name = 'customers';
INSERT INTO sqlite_sequence (name, seq) SELECT 'customers', 1000 WHERE NOT EXISTS (SELECT 1 FROM sqlite_sequence WHERE name = 'customers');
UPDATE sqlite_sequence SET seq = max(seq, 5000) WHERE name = 'orders';
INSERT INTO sqlite_sequence (name, seq) SELECT 'orders', 5000 WHERE NOT EXISTS (SELECT 1 FROM sqlite_sequence WHERE name = 'orders');
COMMIT;

-- Rows whose foreign key finds no parent, if any: the load doesn't stop for them.
PRAGMA foreign_key_check;