How to query multiple primary records and their one-to-many records efficiently?

When I was faced with this problem, I ended up making one big query (select * from hotelsxmedia join hotels on ... join media on ...), which returns as many rows as the rows of the cross table (HotelsXMedia). Just be sure to order by hotelid. Then when you loop through the query results, you can take one action for every new hotelid (eg, append to array) and a different action for a row that repeats the same hotelid (eg, add the new media to it).

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