I have to run the same queries with and without indexes, in mysql. 
I create indexes like this:

```
create index index_1 on table_1(column_name);
create index index_2 on table_2(column_name);

```

I execute this and I get the results that 0 rows has affected, both times. Is this ok?

Because when I execute the queries I have (after I created indexes), it takes me the same time as before (without indexes.)

The view of database: 
[![click here for the image](https://i.stack.imgur.com/g17Cp.jpg)](https://i.stack.imgur.com/g17Cp.jpg)

I have multiple small queries about this database, e.g 

```
SELECT DISTINCT customers.customer_id, customers.customer_name
FROM customers
  INNER JOIN accounts ON customers.customer_id = accounts.customer_id
  INNER JOIN transactions ON transactions.account_id = accounts.account_id 
WHERE transactions.trn_date >= '2011/05/01'
  AND transactions.trn_date <= '2011/05/31'
ORDER BY customers.customer_id

```