Expo SQLite

{
  "expo": {
    "plugins": [
      [
        "expo-sqlite",
        {
          "enableFTS": true,
          "useSQLCipher": true,
          "android": {
            // 覆盖 Android 的共享配置
            "enableFTS": false,
            "useSQLCipher": false
          },
          "ios": {
            // 你也可以覆盖 iOS 的共享配置
            "customBuildFlags": ["-DSQLITE_ENABLE_DBSTAT_VTAB=1 -DSQLITE_ENABLE_SNAPSHOT=1"]
          }
        }
      ]
    ]
  }
}

import * as SQLite from 'expo-sqlite';

const db = await SQLite.openDatabaseAsync('databaseName');

// `execAsync()` 适用于批量查询，当你希望一次性执行时很有用。
// 请注意，`execAsync()` 不会转义参数，可能导致 SQL 注入。
await db.execAsync(`
PRAGMA journal_mode = WAL;
CREATE TABLE IF NOT EXISTS test (id INTEGER PRIMARY KEY NOT NULL, value TEXT NOT NULL, intValue INTEGER);
INSERT INTO test (value, intValue) VALUES ('test1', 123);
INSERT INTO test (value, intValue) VALUES ('test2', 456);
INSERT INTO test (value, intValue) VALUES ('test3', 789);
`);

// `runAsync()` 适用于执行一些写操作。
const result = await db.runAsync('INSERT INTO test (value, intValue) VALUES (?, ?)', 'aaa', 100);
console.log(result.lastInsertRowId, result.changes);
await db.runAsync('UPDATE test SET intValue = ? WHERE value = ?', 999, 'aaa'); // 从可变参数绑定未命名参数
await db.runAsync('UPDATE test SET intValue = ? WHERE value = ?', [999, 'aaa']); // 从数组绑定未命名参数
await db.runAsync('DELETE FROM test WHERE value = $value', { $value: 'aaa' }); // 从对象绑定命名参数

// `getFirstAsync()` 适用于你想从数据库获取单行结果时。
const firstRow = await db.getFirstAsync('SELECT * FROM test');
console.log(firstRow.id, firstRow.value, firstRow.intValue);

// `getAllAsync()` 适用于你想将所有结果作为对象数组获取时。
const allRows = await db.getAllAsync('SELECT * FROM test');
for (const row of allRows) {
  console.log(row.id, row.value, row.intValue);
}

// `getEachAsync()` 适用于你想迭代 SQLite 查询游标时。
for await (const row of db.getEachAsync('SELECT * FROM test')) {
  console.log(row.id, row.value, row.intValue);
}

const statement = await db.prepareAsync(
  'INSERT INTO test (value, intValue) VALUES ($value, $intValue)'
);
try {
  let result = await statement.executeAsync({ $value: 'bbb', $intValue: 101 });
  console.log('bbb and 101:', result.lastInsertRowId, result.changes);

  result = await statement.executeAsync({ $value: 'ccc', $intValue: 102 });
  console.log('ccc and 102:', result.lastInsertRowId, result.changes);

  result = await statement.executeAsync({ $value: 'ddd', $intValue: 103 });
  console.log('ddd and 103:', result.lastInsertRowId, result.changes);
} finally {
  await statement.finalizeAsync();
}

const statement2 = await db.prepareAsync('SELECT * FROM test WHERE intValue >= $intValue');
try {
  const result = await statement2.executeAsync<{ value: string; intValue: number }>({
    $intValue: 100,
  });

  // `getFirstAsync()` 适用于你想从数据库获取单行结果时。
  const firstRow = await result.getFirstAsync();
  console.log(firstRow.id, firstRow.value, firstRow.intValue);

  // 将 SQLite 查询游标重置到起始位置，以便下一次 `getAllAsync()` 调用。
  await result.resetAsync();

  // `getAllAsync()` 适用于你想将所有结果作为对象数组获取时。
  const allRows = await result.getAllAsync();
  for (const row of allRows) {
    console.log(row.value, row.intValue);
  }

  // 将 SQLite 查询游标重置到起始位置，以便下一次 `for-await-of` 循环。
  await result.resetAsync();

  // 结果对象本身也是一个异步可迭代对象。你可以在 `for-await-of` 循环中使用它来迭代 SQLite 查询游标。
  for await (const row of result) {
    console.log(row.value, row.intValue);
  }
} finally {
  await statement2.finalizeAsync();
}

import { SQLiteProvider, useSQLiteContext, type SQLiteDatabase } from 'expo-sqlite';
import { useEffect, useState } from 'react';
import { View, Text, StyleSheet } from 'react-native';

export default function App() {
  return (
    <View style={styles.container}>
      <SQLiteProvider databaseName="test.db" onInit={migrateDbIfNeeded}>
        <Header />
        <Content />
      </SQLiteProvider>
    </View>
  );
}

export function Header() {
  const db = useSQLiteContext();
  const [version, setVersion] = useState('');
  useEffect(() => {
    async function setup() {
      const result = await db.getFirstAsync<{ 'sqlite_version()': string }>(
        'SELECT sqlite_version()'
      );
      setVersion(result['sqlite_version()']);
    }
    setup();
  }, []);
  return (
    <View style={styles.headerContainer}>
      <Text style={styles.headerText}>SQLite 版本：{version}</Text>
    </View>
  );
}

interface Todo {
  value: string;
  intValue: number;
}

export function Content() {
  const db = useSQLiteContext();
  const [todos, setTodos] = useState<Todo[]>([]);

  useEffect(() => {
    async function setup() {
      const result = await db.getAllAsync<Todo>('SELECT * FROM todos');
      setTodos(result);
    }
    setup();
  }, []);

  return (
    <View style={styles.contentContainer}>
      {todos.map((todo, index) => (
        <View style={styles.todoItemContainer} key={index}>
          <Text>{`${todo.intValue} - ${todo.value}`}</Text>
        </View>
      ))}
    </View>
  );
}

async function migrateDbIfNeeded(db: SQLiteDatabase) {
  const DATABASE_VERSION = 1;
  let { user_version: currentDbVersion } = await db.getFirstAsync<{ user_version: number }>(
    'PRAGMA user_version'
  );
  if (currentDbVersion >= DATABASE_VERSION) {
    return;
  }
  if (currentDbVersion === 0) {
    await db.execAsync(`
PRAGMA journal_mode = 'wal';
CREATE TABLE todos (id INTEGER PRIMARY KEY NOT NULL, value TEXT NOT NULL, intValue INTEGER);
`);
    await db.runAsync('INSERT INTO todos (value, intValue) VALUES (?, ?)', 'hello', 1);
    await db.runAsync('INSERT INTO todos (value, intValue) VALUES (?, ?)', 'world', 2);
    currentDbVersion = 1;
  }
  // 如果 (currentDbVersion === 1) {
  //   添加更多迁移
  // }
  await db.execAsync(`PRAGMA user_version = ${DATABASE_VERSION}`);
}

const styles = StyleSheet.create({
  // 你的样式...
});

import { SQLiteProvider, useSQLiteContext } from 'expo-sqlite';
import { Suspense } from 'react';
import { View, Text, StyleSheet } from 'react-native';

export default function App() {
  return (
    <View style={styles.container}>
      <Suspense fallback={<Fallback />}>
        <SQLiteProvider databaseName="test.db" onInit={migrateDbIfNeeded} useSuspense>
          <Header />
          <Content />
        </SQLiteProvider>
      </Suspense>
    </View>
  );
}

const db = await SQLite.openDatabaseAsync('databaseName');

await db.withTransactionAsync(async () => {
  const result = await db.getFirstAsync('SELECT COUNT(*) FROM USERS');
  console.log('计数：', result.rows[0]['COUNT(*)']);
});

const db = await SQLite.openDatabaseAsync('databaseName');
await db.execAsync('PRAGMA journal_mode = WAL');
await db.execAsync('PRAGMA foreign_keys = ON');

import { SQLiteProvider, useSQLiteContext } from 'expo-sqlite';
import { View, Text, StyleSheet } from 'react-native';

export default function App() {
  return (
    <View style={styles.container}>
      <SQLiteProvider databaseName="test.db" assetSource={{ assetId: require('./assets/test.db') }}>
        <Header />
        <Content />
      </SQLiteProvider>
    </View>
  );
}

await db.execAsync(`
DROP TABLE IF EXISTS blobs;
CREATE TABLE IF NOT EXISTS blobs (id INTEGER PRIMARY KEY NOT NULL, data BLOB);
`);

const blob = new Uint8Array([0x00, 0x01, 0x02, 0x03, 0x04, 0x05]);
await db.runAsync('INSERT INTO blobs (data) VALUES (?)', blob);

const row = await db.getFirstAsync<{ data: Uint8Array }>('SELECT * FROM blobs');
expect(row.data).toEqual(blob);

// storage API 默认导出，你可以把它命名为 Storage、AsyncStorage，或者任何你喜欢的名称。
import Storage from 'expo-sqlite/kv-store';

await Storage.setItem('key', JSON.stringify({ entity: 'value' }));
const value = await Storage.getItem('key');
const entity = JSON.parse(value);
console.log(entity); // { entity: 'value' }

// storage API 默认导出，你可以把它命名为 Storage、AsyncStorage，或者任何你喜欢的名称。
import Storage from 'expo-sqlite/kv-store';

Storage.setItemSync('key', 'value');
const value = Storage.getItemSync('key');

const db = await SQLite.openDatabaseAsync('databaseName');
await db.execAsync(`PRAGMA key = 'password'`);