Relational— these are the databases in the traditional sense. They don’t just store data but also therelationshipsbetween the data. SQLite is an example of a relational database. 关系式-这些是传统意义上的数据库。 它们不仅存储数据,还存储数据之间的关系。 SQLite是关系数据库的一个示例。 NoSQL—...
Insert finalMap<String,String> row={name:"My item"};try{intid=awaitdb.insert(table:"category", row:row) }catch(e) {rethrow; } Select try{List<Map<String,dynamic>> rows=awaitdb.select( table:"product", limit:20, columns:"id,name", where:"name LIKE '%something%'", orderBy:"name...
import { Database } from "bun:sqlite"; const db = new Database("mydb.sqlite"); db.run( "CREATE TABLE IF NOT EXISTS foo (id INTEGER PRIMARY KEY AUTOINCREMENT, greeting TEXT)" ); db.run("INSERT INTO foo (greeting) VALUES (?)", "Welcome to bun!"); db.run("INSERT INTO foo (...
该组件负责管理对底层SQLite数据库的访问,抽象类包含查询数据库的方法签名,这些方法签名必须返回一个Future或Stream 可以通过向方法中添加@Query注释来定义查询,SQL语句必须添加到括号中,该方法必须返回您正在查询的实体的Future或Stream @insert将方法标记为插入方法。 // dao/person_dao.dartimport'package:floor/floor....
Inserting data follows the same age-old SQLite tenants // Insert some records in a transaction await database.transaction((txn) async { int id1 = await txn.rawInsert( 'INSERT INTO Test(name, value, num) VALUES("some name", 1234, 456.789)'); ...
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