Android开发教程之--sql语句
一、创建/删除表
String sql="Create table "+TABLE_NAME+"("+FIELD_ID+" integer primary key autoincrement," +FIELD_TITLE+" text );"; db.execSQL(sql);
String sql=" DROP TABLE IF EXISTS "+TABLE_NAME; db.execSQL(sql);
二、查询
从表中查询数据(in) SELECT * FROM meta where media_id in (1,2,9);
三、插入
SQLiteDatabase db=this.getWritableDatabase();
ContentValuescv=newContentValues();
cv.put(FIELD_TITLE,Title);
long row=db.insert(TABLE_NAME, null, cv);四、更新
SQLiteDatabase db=this.getWritableDatabase();
Stringwhere=FIELD_ID+"=?";
String[]whereValue={Integer.toString(id)};
ContentValuescv=newContentValues();
cv.put(FIELD_TITLE,Title);
db.update(TABLE_NAME, cv, where, whereValue);五、删除
SQLiteDatabase db=this.getWritableDatabase();
Stringwhere=FIELD_ID+"=?";
String[]whereValue={Integer.toString(id)};
db.delete(TABLE_NAME,where,whereValue);