Question

我已准备好在SQLITE ANDROID STUDIO中创建数据库和表的代码，但我在SQL语句中遇到错误。

错误图片在这里： - ERROR IMAGE

package com.example.thakkar.registration;

import android.content.Context;
import android.database.sqlite.SQLiteDatabase;
import android.database.sqlite.SQLiteOpenHelper;
import android.view.View;

public class DataBaseHelper extends SQLiteOpenHelper {

public static final String DATABASAE_NAME="student.db";
public static final String TABLE_NAME="student_table";
public static final String COL_1="NAME";
public static final String COL_2="EMAIL";
public static final String COL_3="PASSWORD";



public DataBaseHelper(Context context) {
    super(context, DATABASAE_NAME, null, 1);

    SQLiteDatabase db=this.getWritableDatabase();

}

@Override
public void onCreate(SQLiteDatabase db) {
    db.execSQL("create table"+ TABLE_NAME+ "(NAME TEXT,EMAIL TEXT,PASSWORD TEXT)");

}

@Override
public void onUpgrade(SQLiteDatabase db, int i, int i1) {

    db.execSQL("DROP TABLE IF EXIST"+ TABLE_NAME);

    onCreate(db);
}
}

Answer 1

您需要在table之前将TABLE_NAME与空格分开，像，

db.execSQL("create table "+ TABLE_NAME+ "(NAME TEXT,EMAIL TEXT,PASSWORD TEXT)");

在onUpgrade()方法中也一样，

db.execSQL("DROP TABLE IF EXISTS "+ TABLE_NAME);

如何在SQLite中创建表？

1 个答案: