I have a Date Parameter that i Need to use to find out how many People in our database is under 6 years old or turns 6 in the same month as Parameter. 

This is my start. ( 2017-07-02 date from Parameter ) 

```
SELECT a.name,a.firstname,a.birthday FROM adress a 
WHERE a.birthday >= dateadd(year,-6, { d '2017-07-02'})

```

My Problem is i Need to return thoose People that turns 6 in 2011-07 also. With the Select i have atm i only get the ones who has birthday 2017-07-01 or 2017-07-02 in June. 

How can i do this nicely?