Hello, I am not good at English. I have a question. There are the following data. create table chartbl ( caseno int, varchar5 varchar(5) ); insert into chartbl values(1, ' '); insert into chartbl values(2, ''); The same result with the following two queries is obtained. select * from chartbl where varchar5 = ' '::bpchar -- ::bpchar select * from chartbl where varchar5 = N' ' -- N prefix Is this specification? Does it continue not to change? -- Sent via pgsql-general mailing list (pgsql-general@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general
