How do I change the max column width in PostgreSQL?

问题

I have simple SQL query that selects a few rows from one table. One of the columns contains very long strings. I would like to set a maximum column width so that it is easier to read. I don't have access to environment variables through \pset.

来源：https://stackoverflow.com/questions/48481809/how-do-i-change-the-max-column-width-in-postgresql