Flutter DatabaseException检查约束失败

如何解决Flutter DatabaseException检查约束失败

我正在尝试向 sqflite 表中插入一些数据，但在执行插入查询时出错 这是我创建数据库的代码

Future _onCreate(Database db,int version) async {
await db.execute('''
          CREATE TABLE $clientTable (
            $colId INTEGER PRIMARY KEY AUTOINCREMENT,$coldisplay TEXT NOT NULL UNIQUE,$colFistName TEXT NOT NULL,$colLastName TEXT,$colGstNo TEXT UNIQUE CHECK (length($colGstNo) = 15),$colWebsite TEXT UNIQUE,$colPhone  INTEGER UNIQUE
            CHECK (length($colPhone) <= 15 AND length($colPhone) >= 7),$colEmail TEXT UNIQUE,$colCurrency INTEGER  DEFAULT 1,$colPaymentTerm INTEGER DEFAULT 1,$colEmailReminder BOOLEAN DEFAULT 0,$colCreatedAt TEXT,$colTotal DECIMAL (10,2) DEFAULT 0.0
          )
          ''');

}

这是我得到的错误

[ERROR:Flutter/lib/ui/ui_dart_state.cc(157)] Unhandled Exception: DatabaseException(CHECK constraint Failed: clientsTable (code 275)) sql 'INSERT INTO clientsTable (displayName,firstName,lastName,gstNo,website,phone,email,currency,paymentTerm,emailReminder,createdAt,total) VALUES (?,?,?)' args [john,john,2345367456,rupee,NET 0,false,Jan 21,2021,10.21]}

数据插入代码

Future<int> insert(Client client) async {
    Database db = await database;
    int id = await db.insert(clientTable,client.toMap());
    return id;
  }

映射函数

Map<String,dynamic> toMap() {
    var map = Map<String,dynamic>();
    if (id != null) {
      map['id'] = _id;
    }

    map['displayName'] = _displayName;
    map['firstName'] = _firstName;
    map['lastName'] = _lastName;
    map['gstNo'] = _gstNo;
    map['website'] = _website;
    map['phone'] = _phone;
    map['email'] = _email;
    map['currency'] = _currency;
    map['paymentTerm'] = _paymentTerm;
    map['emailReminder'] = _emailReminder;
    map['createdAt'] = _createdAt;
    map['total'] = _total;

    return map;
  }