how to solve flutter sqlite syntax error? - database

Question

bi
I making database with sqlite
I was building a database and I had a problem.
That my screen full code:
import 'dart:async';
import 'package:flutter/material.dart';
import 'package:flutter/services.dart';
import 'dart:math';
import 'package:socialapp/model/todo.dart';
import 'package:socialapp/widgets/database_create.dart';
class writeprofile2 extends StatefulWidget {
writeprofile2({Key key}) : super(key : key);
#override
_writeprofile2State createState() => _writeprofile2State();
}
class _writeprofile2State extends State<writeprofile2> {
final _formKey = GlobalKey<FormState>();
String _name, _age, _intro;
#override
Widget build(BuildContext context) {
return Scaffold(
body: Builder(
builder: (context) => Center(
child: Container(
child: Container(
child: Form(
key: _formKey,
child: Column(
children: <Widget>[
Padding(
padding: EdgeInsets.only(top: 70),
child: Text(
'프로필 작성',
style: TextStyle(
fontSize: 30,
fontWeight: FontWeight.w500,
),
),
),
Padding(
padding: EdgeInsets.only(top: 10, bottom: 50),
child: Container(
height: 1,
width: MediaQuery.of(context).size.width / 1.4,
color: Colors.black26,
),
),
Padding(
padding: EdgeInsets.only(top: 10),
child: Container(
//이름입력
width: MediaQuery.of(context).size.width / 2,
height: MediaQuery.of(context).size.height / 20,
alignment: FractionalOffset.center,
decoration: BoxDecoration(
color: Colors.black12,
borderRadius:
BorderRadius.all(const Radius.circular(20)),
),
child: TextFormField(
decoration: InputDecoration(
hintStyle: TextStyle(
fontSize: 20,
),
border: InputBorder.none,
hintText: '이름',
prefixIcon: Icon(
Icons.person_outline,
color: Colors.black,
),
),
validator: (input) {
if (input.isEmpty) {
return '이름을 입력해주세요';
}
},
onSaved: (value)=> _name = value,
),
),
),
Padding(
padding: EdgeInsets.only(top: 10),
child: Container(
width: MediaQuery.of(context).size.width / 2,
height: MediaQuery.of(context).size.height / 20,
alignment: FractionalOffset.center,
decoration: BoxDecoration(
color: Colors.black12,
borderRadius:
BorderRadius.all(const Radius.circular(20)),
),
child: TextFormField(
keyboardType: TextInputType.number,
inputFormatters: [
WhitelistingTextInputFormatter.digitsOnly
],
decoration: InputDecoration(
hintStyle: TextStyle(
fontSize: 20,
),
border: InputBorder.none,
hintText: '나이',
prefixIcon: Icon(
Icons.label_outline,
color: Colors.black,
),
),
validator: (val) {
if (!isNumber(val)) {
return "나이를 입력해주세요";
};
},
onSaved: (value)=> _age = value,
),
),
),
Padding(
padding: EdgeInsets.only(top: 10),
child: Container(
//이름입력
width: MediaQuery.of(context).size.width / 2,
height: MediaQuery.of(context).size.height / 20,
alignment: FractionalOffset.center,
decoration: BoxDecoration(
color: Colors.black12,
borderRadius:
BorderRadius.all(const Radius.circular(20)),
),
child: TextFormField(
decoration: InputDecoration(
hintStyle: TextStyle(
fontSize: 20,
),
border: InputBorder.none,
hintText: '소개',
prefixIcon: Icon(
Icons.person_outline,
color: Colors.black,
),
),
validator: (input) {
if (input.isEmpty) {
return '자기소개';
}
},
onSaved: (value)=> _intro = value,
),
),
),
InkWell(
onTap: (){
Todo newtodo = Todo(name: _name, age: _age, intro: _intro);
DBHelper().createData(newtodo);
setState(() {
});
},
child: Padding(
padding: EdgeInsets.only(top: 50),
child: Container(
width: MediaQuery.of(context).size.width / 3,
height: MediaQuery.of(context).size.height / 20,
alignment: FractionalOffset.center,
decoration: BoxDecoration(
color: const Color.fromRGBO(250, 80, 100, 1),
borderRadius:
BorderRadius.all(const Radius.circular(30)),
),
child: Text(
"Next",
style: TextStyle(
color: Colors.white,
fontSize: 20,
fontWeight: FontWeight.w500,
letterSpacing: 0.3,
),
),
),
),
),
],
),
),
),
),
),
),
);
}
String randomTodo(){
final randomNumber = Random().nextInt(4);
String todo;
switch(randomNumber){
case 1:
todo = 'hello1';
break;
case 1:
todo = 'hello2';
break;
case 1:
todo = 'hello3';
break;
default:
todo = 'default';
break;
}
return todo;
}
}
bool isNumber(String valueNumber) {
if (valueNumber == null) {
return true;
}
final n = num.tryParse(valueNumber);
return n != null;
}
That my todo Code :
class Todo {
int id;
String name;
String intro;
String age;
Todo({
this.id,
this.name,
this.intro,
this.age,});
factory Todo.fromJson(Map<String, dynamic> json) => Todo(
id: json["id"],
intro: json["intro"],
name: json["name"],
age: json["age"],
);
Map<String, dynamic> toJson() =>
{
'id' :id,
'name': name,
'age': age,
'intro' : intro,
};
}
That database create code:
import 'package:path_provider/path_provider.dart';
import 'package:sqflite/sqflite.dart';
import 'package:socialapp/model/todo.dart';
import 'dart:async';
import 'dart:io';
import 'package:path/path.dart';
final String tableName = 'person';
class DBHelper{
DBHelper._();
static final DBHelper _db = DBHelper._();
factory DBHelper() => _db;
//해당 변수에 데이터베이스 정보 저장
static Database _database;
Future<Database> get database async{
if(_database != null)return _database;
_database = await initDB();
return _database;
}
initDB() async{
Directory documentsDirectory = await getApplicationDocumentsDirectory();
String path = join(documentsDirectory.path, 'PersonProfile.db');
return await openDatabase(
path,
version: 1,
onOpen: (db) {},
onCreate: (Database db, int version) async{
await db.execute('''
CREATE TABLE $tableName
id INTEGER PRIMARY KEY,
name TEXT,
intro TEXT,
age TEXT ''');
},
);
}
createData(Todo todo)async{
final db = await database;
var res = await db.insert(tableName, todo.toJson());
return res;
}
//read
getTodo(int id) async{
final db = await database;
var res = await db.query(tableName, where: 'id = ?', whereArgs: [id]);
return res.isNotEmpty ? Todo.fromJson(res.first) : Null;
}
// getAllTodos() async{
// final db = await database;
// var res = await db.query(tableNam
// }
updateTodo(Todo todo) async{
final db = await database;
var res = await db.update(tableName, todo.toJson(),
where: 'id =?' , whereArgs: [todo.id]);
return res;
}
//Delete
deleteTodo(int id) async{
final db = await database;
db.delete(tableName, where: 'id =?', whereArgs: [id]);
}
deleteAllTodos() async{
final db =await database;
db.rawDelete("Delete * from $tableName");
}
}
error code :
>
>
> id INTEGER PRIMARY KEY,
> name TEXT,
> intro TEXT,
> age TEXT flutter: error DatabaseException(Error Domain=FMDatabase Code=1 "near "id": syntax error"
> UserInfo={NSLocalizedDescription=near "id": syntax error}) sql '
> CREATE TABLE person
> id INTEGER PRIMARY KEY,
> name TEXT,
> intro TEXT,
> age TEXT ' args []} during open, closing... [VERBOSE-2:ui_dart_state.cc(148)] Unhandled Exception:
> DatabaseException(Error Domain=FMDatabase Code=1 "near "id": syntax
> error" UserInfo={NSLocalizedDescription=near "id": syntax error}) sql
> ' CREATE TABLE person
> id INTEGER PRIMARY KEY,
> name TEXT,
> intro TEXT,
> age TEXT ' args []}
> #0 wrapDatabaseException (package:sqflite/src/exception_impl.dart:11:7) <asynchronous
> suspension>
> #1 SqfliteDatabaseFactoryImpl.wrapDatabaseException (package:sqflite/src/factory_impl.dart:29:7)
> #2 SqfliteDatabaseMixin.safeInvokeMethod (package:sqflite/src/database_mixin.dart:184:15)
> #3 SqfliteDatabaseMixin.invokeExecute (package:sqflite/src/database_mixin.dart:342:12)
> #4 SqfliteDatabaseMixin.txnExecute.<anonymous closure> (package:sqflite/src/database_mixin.dart:334:14)
> #5 SqfliteDatabaseMixin.txnSynchronized (package:sqflite/src/database_mixin.dart:285:26) <asynchronous
> suspension>
> #6 SqfliteDatabaseMixin.txnWriteSynchronized (package:sqflite/src/da<…>
How can i fix this ?

Answer 1

You need to add parenthesis after the tableName:
CREATE TABLE $tableName(
id INTEGER PRIMARY KEY,
name TEXT,
intro TEXT,
age TEXT)
Check here:
http://www.mysqltutorial.org/mysql-create-table/
Also check the example in the sqflite plugin:
await db.execute(
'CREATE TABLE Test (id INTEGER PRIMARY KEY, name TEXT, value INTEGER, num REAL)');
});