3

我正在尝试在 android 上创建一个数据库，当我运行时引发异常：

Database - Failure 1 (near "integer" : syntax error) on 0x1ac028 when preparing 'create table list1 (id integer Primary key autoincrement, task text not null, check integer not null)'

我不明白为什么会这样。这是我的代码：

String dbName="projectDatabase";
    String tableName="List1";
    String TableStructure="create table " + tableName +" (id integer Primary key autoincrement, task text not null, check integer not null)";
    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        Button cb = (Button) findViewById(R.id.creatbutton);
        cb.setOnClickListener(new OnClickListener() {

            @Override
            public void onClick(View arg0) {
                // TODO Auto-generated method stub
                try{
                    SQLiteDatabase ldb = openOrCreateDatabase(dbName, Context.MODE_PRIVATE, null);
                    ldb.execSQL(TableStructure);}catch(Exception e){
                        Toast.makeText(DsTest2Activity.this, "Failed", Toast.LENGTH_LONG).show();
                    }
                Intent list = new Intent(DsTest2Activity.this,List.class);
                startActivity(list);
            }
        });
    }
4

3 回答 3

3

check是一个 SQLite 关键字。您不能将其用作表名或列名。

将您的列名更改为其他名称，您的错误就会消失。

String TableStructure="create table " + tableName +" (id integer Primary key autoincrement, task text not null, checknum integer not null)";

有关当前 SQLite 关键字的完整列表，请查看此处。

于 2012-11-21T17:17:18.777 回答
1

To use a keyword directly as a column name, quote it:

..., "check" integer not null)
于 2012-11-21T17:44:51.447 回答
-1

下午好，输入你的代码_id integer primary key autoincrement, ...，例如：

CREATE TABLE tabela(_id integer primary key autoincrement, task text not null, check integer not null);

于 2012-11-21T17:32:19.507 回答