How to select the reserved word (limit) in postgres

问题

I have the field 'limit' in a table in my postgres database. I run psql and I can't select, update, change this field because is a reserved word in postgresql. There is a way to manage this field?

serene-retreat::SILVER=> select limit from companies;
ERROR:  syntax error at or near "limit"
LINE 1: select limit from companies;

回答1:

In SQL reserved (key)words need to be quoted using double quotes:

select "limit" 
from companies;

Note that this also makes column case-sensitive: "LIMIT" is a different name than "limit".

This all explained in the manual:
http://www.postgresql.org/docs/current/static/sql-syntax-lexical.html#SQL-SYNTAX-IDENTIFIERS

回答2:

use this

select [limit] from companies;

or

select companies.[limit] from companies;

来源：https://stackoverflow.com/questions/29053168/how-to-select-the-reserved-word-limit-in-postgres