Support Single Pipe and Single Ampersand operators

[nicklayb]

It would be nice to allow and or and and logic on the fields part. Example

get all User where bank_account | withdrawn_amount | deposited_amount > 100k

which would translate in

select * from users where (bank_account > 100000 or withdrawn_amount > 100000 or deposited_amount > 100000)

And

get all User where bank_account & withdrawn_amount & deposited_amount > 100k

which would translate in

select * from users where (bank_account > 100000 and withdrawn_amount > 100000 and deposited_amount > 100000)