Laravel column alias

I am a newbie to Laravel.

I have written a controller which will join 3 table and return the rows and then on the model they will shown as table using pagination

On the model, I need to get the id of a particular table.

The problem is the id field is a common name in all tables. When i do $rec->id its is not fetching the id which i am expecting.

I tried googling on how to create an alias name for my column but it is not working and usually get some sql errors.

Can someone please suggest a solution.

Thanks.

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