View error in PostgreSQL

Question

I have a large query in a PostgreSQL database. The Query is something like this:

SELECT * FROM table1, table2, ... WHERE table1.id = table2.id...
         


        

Answer 1

If you got here because you are trying to use a function like to_date and getting the "defined more than once" error, note that you need to use a column alias for functions, e.g.:

to_date(o.publication_date, 'DD/MM/YYYY') AS publication_date