![]() execute - returns the result of the stored procedure (not yet tested).delete - returns the number of affected rows.update - returns the number of affected rows.insert - returns the last inserted row id.It returns different results depending of the performed action: This is the base method called externally and internally when working with the DB. The optional dbName parameter, available in all the methods, allows to manage different databases at the same time, if the database is just one just ignore it, otherwise pass it to declare on which database you want to operate. The list of tables is used by the reactive part of the library to know what tables are included in a query (via the watch command) and what tables are affected by a particular sql operation (via the execute method that is called by all the other simplified methods: insert, update, delete. Parameters can be included in the SQL query as ? ( SELECT * from users where id = ?). Most of the methods accept a sql string, an optional list of parameters and an optional list of tables. Sqlite_wrapper must be invoked as a singleton (the class returns always the same instance) so there's no need to create or store it in a variable, SQLiteWrapper() always returns the same instance. Install the sqlite3_flutter_libs to include the latest version of SQLite on iOS and MacOS (optional) or to make the sqllite3 package work in Android, Windows and Linux (required).Ī full working Flutter Todos example (what else!) is provided in the /example folder but here's some information about the available methods (check even the /test folder for additional examples).execute a callback when the database is created or when should be migrated to a new schema version.connect to multiple databases by providing a dbName.watch (via streams) for a particular query, getting results reactively and instantly updated.work with the DB using encoded and decoded maps or model objects.This package provide just a few methods that allow to: ![]() no (extreme) magic, but a nice and simple API. ![]() multi-platform (currently tested on iOS, Android, MacOS, Windows) - Web is not supported.full access to SQL language features without the need to learn new paradings.a simpler API to converting from and to model objects.This are the main principles that guide the development of this library: This library doesn't aim to reach the same features richness of libraries like drift or moor, but to make it easy to work with SQLite abstracting just the minimum to enjoy using this great DB from dart and Flutter. For example, when defining a cat category, each cat’s data will contain three fields: a unique id name age.Sqlite_wrapper is a simple wrapper around the SQLite3 bindings provided by the sqlite3 package by Simon Binder. When you are going to store the cat’s information in the newly created table, you need to define these cat first. Make sure you have imported packages into the file you want to use import 'dart:async' Path provides a large number of methods so that you can correctly define the storage location of the database on the disk dependencies: Sqflite provides a wealth of classes and methods so that you can easily use SQLite databases. In order to use the SQLite database, you first need to import the two packages sqflite and path. Insert a piece of Cat data into the database.You need to master the basic SQL statements before viewing this article. ![]() If you are not familiar with SQLite and SQL statements, please check the official SQLite tutorial SQLite tutorial. This article will demonstrate inserting, reading, updating, and deleting all kinds of cat data by using sqflite. The SQLite database can be used in Flutter applications through the sqflite package. In general, compared to other local persistence solutions, the database can provide faster insert, update, and query functions. If you are writing an app that requires persistence and queries large amounts of local device data, consider using a database instead of a local folder or key value library.
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