[英]How to assign an int variable with a one-to-many phone number in SQL
我想為許多SQL表分配一個帶有電話號碼的int變量
public void addData(long id, String menu_name, int quantity, double
total_price){
// this is main holder key-value pair, used by SQLite functions for Android
ContentValues values = new ContentValues();
values.put(ID, id);
values.put(MENU_NAME, menu_name);
values.put(QUANTITY, quantity);
values.put(TOTAL_PRICE, total_price);
// try to insert new data to database using database object
try{db.insert(TABLE_NAME, null, values);}
catch(Exception e)
{
Log.e("DB ERROR", e.toString());
e.printStackTrace();
}
}
您需要創建3個表。
完成此步驟后,您可以創建select,例如:
SELECT p.number AS phone_number FROM custom_table_name ctn JOIN phones p ON ctn.id_phone = p.id WHERE ctn.id_int = 1
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