node-postgres返回多个array_length（）列？

Question

I have 3 array columns and i am trying to get the count for each of these arrays but node-postgres is only returning one of them which is the last array_length() passed in the SQL statement. I passed the same sql query using the postgres console and it returned all the results.

Answer 1

Ok figured it out, the array query needs to be wrapped in brackets

(array_length(friends,1),array_length(clients, 1),array_length(venues, 1)) 

and this will return for eg (3,3,7) , otherwise only the last query will return (7) .