Syntax error in LEFT JOIN - postgresql

Question

My query is as below:
Select
array_to_string(r.media,',') AS service_type,
array_to_string(array_agg(distinct s.state_name), ',') as primary_location
FROM contract.contract c
LEFT JOIN customer.customer_state s , contract.rights r ON s.id = ANY (r.state)
WHERE c.customer_code::text = 'YYYY'::text
group by r.state
order by c.contract_name asc;
and I'm getting:
ERROR: syntax error at or near "," LINE 44: LEFT JOIN
customer.customer_state s , contract.rights r O...
Please suggest

Answer 1

You can't mix explicit and implicit joins like that.
FROM contract.contract c
LEFT JOIN customer.customer_state s , contract.rights r ON
^^^
You should use explicit INNER JOIN or CROSS JOIN terms if you're going to be including LEFT JOIN terms.
The predicate for a join must always immediately follow the join, without other extras.
If you want to do a left join on multiple tables, you must chain the left joins.
FROM contract.contract c
LEFT JOIN customer.customer_state s ON (...)
LEFT JOIN contract.rights r ON (...)
Guesswork from here on in, as the original query's intent is unclear.
Perhaps you mean
FROM contract.contract c
INNER JOIN customer.customer_state s ON (...??...)
LEFT JOIN contract.rights r ON (s.id = ANY (r.state))
though I don't see any predicate that connects contract to either rights or customer_state in the original, so it's hard to guess your intent. If you actually intended a cartesian product (cross join) you'd write:
FROM contract.contract c
CROSS JOIN customer.customer_state s
LEFT JOIN contract.rights r ON (s.id = ANY (r.state))