prepare('INSERT INTO users (name, email) VALUES (?, ?)'); stmt.run('Charlie', 'charlie@example.com'); stmt.finalize(); } catch (error) { console.error('数据库操作失败:', error); } 通过以上步骤,你就可以在Electron项目中成功使用better-sqlite3库来进行SQLite数据库操作了。希望这些信息...
const insert = db.prepare('INSERT INTO users (name, age) VALUES (?, ?)'); insert.run('John Doe', 25); ``` 这个语句用于向"users"表中插入一条数据,name为'John Doe',age为25。 4. 查询数据: ```javascript const query = db.prepare('SELECT * FROM users WHERE age > ?'); const re...
{ verbose: console.log }) export function addUser() { var stmt = db.prepare("insert into user(id,name, describe,update_date,create_date) values(?,?
select 1 rowget()select 100 rowsall()select 100 rowsiterate()1-by-1insert 1 rowrun()insert 100 rows in a transaction better-sqlite31x1x1x1x1x sqliteandsqlite311.7x slower2.9x slower24.4x slower2.8x slower15.6x slower You can verify these results byrunning the benchmark yourself. ...
三、更新替换 3.1 将address字段里的 “东” 替换为 “西” ,如下 update test_tb set address=replace(address,’东’,’西’) where id...总结:对字段中局部字符串做更新替换。...总结:向表中“替换插入”一条数据,如果原表中没有id=6这条数据就作为新数据插入(相当于insert into作用);如果原表...
where username=? and appType=?");stmt.run(tokenString,username,appType);}else{console.log('不存在,则插入');//不存在,则插入varstmt=this.db.prepare("INSERT INTO UserToken (userName,appType,tokenString) VALUES (?,?,?)");stmt.run(username,appType,tokenString);}}}module.exports=TokenDao;...
You can run raw SQL using a connector: // execute a statementawaitconnector.execute('INSERT INTO users VALUES (42);');// run a queryawaitconnector.query('SELECT 42 as meaning');// run a parametrized queryawaitconnector.query({sql:'SELECT id FROM users WHERE id = ?',args:[42],});...
Why should I use this instead ofnode-sqlite3? node-sqlite3uses asynchronous APIs for tasks that are either CPU-bound or serialized. That's not only bad design, but it wastes tons of resources. It also causesmutex thrashingwhich has devastating effects on performance. ...
// Insert user data insert.run('Alice', 25); insert.run('Bob', 30); console.log('Data inserted successfully'); Explanation: prepare compiles a SQL query for repeated execution. run executes the prepared query with provided parameters. ...
console.log('Insert ID:', info.lastInsertROWID) } const queryData = () => { const statement = db.prepare('SELECT * FROM users') result.value = statement.all() console.log('Query Result:', result.value) } return { name, result, insertData, queryData } } } ``` 上述代码通过ref函...