result repetition in SQL inner join with one to many relationship - sql

Question

I am implementing an application that provides the opening hours of several venues. A simplified version of my DB implementation consists of two tables:
+-----------+ +------------------+
| Venue | | opening_hour |
+-----------+ +------------------+
| venue_id | | opening_hour_id |
| name | | day |
+-----------+ | close_time |
| open_time |
| venue_id |
+------------------+
In this case there is a one-to-many relationship between venue and opening hour.
Now, I would like to retrieve a list of all venues available in the database and their corresponding opening hours. To solve this problem I am using the following code:
SELECT ven.name as name, oh.day as day
FROM venue ven INNER JOIN opening_hour oh
ON oh.venue_id = ven.venue_id
With this implementation, for each day's opening hours I get a row result with the venue name and the day value. This means that if a venue is opened 6 days a week, I would receive 6 rows with the same name and the corresponding day. As a result I find myself with a lot of repeated data that I have to manipulate on the server side.
The only two solutions I can think of from my small DB knowledge is to either follow the current solution or to extract all venues and then perform a single query for each one of them in order to extract their opening hours. The latter one is clearly the worse solution since it would require a ridiculous amount of DB requests.
Can anyone thing of a better approach? The ideal would be to receive a row containing the venue name and an array formed by all the opening hours.
note: Not sure if this is relevant in this case, but I am using a PostgreSQL database.

Answer 1

This will give the venue name and an array of all days when the venue is open:
SELECT ven.name, array_agg(oh.day)
FROM venue ven
NATURAL JOIN opening_hour oh
GROUP BY ven.name;

Answer 2

For the ones using MSSQL;
SELECT
v.name,
REPLACE(REPLACE(REPLACE('['+(
SELECT
'''' + convert(nvarchar(max),s2.open_time) + '''' as a
FROM opening_hour s2
WHERE s2.venue_id= s.venue_id
FOR XML PATH('')
) + ']','<a>',''),'</a>',','),',]',']') as opening_hours
FROM opening_hour s
INNER JOIN Venue v on v.venue_id = s.venue_id
GROUP BY s.venue_id,v.name
Just to note here, this does not return data type Array. It is just a string in a array format.