Tom DalPozzo <t(dot)dalpozzo(at)gmail(dot)com> writes:
> I tried without success INSERT INTO MYTABLE VALUES ('{'\x0011','\x2233'}');
> What's wrong?
You've ignored the rules about how to write element values within an
array literal:
https://www.postgresql.org/docs/current/static/arrays.html#ARRAYS-IO
Personally I tend to write an ARRAY[] construct in preference to
manually adding extra quotes and backslashes to such values.
regards, tom lane