create table my_table(
id varchar(255) not null primary key,
text_column varchar(255) not null,
array_column text[] not null
);

My table state is

id|text_column|array_column|
--+-----------+------------+
1 |Abcd       |{a,b}       |
2 |Abcd       |{a}         |
3 |Xyz        |{a,b}       |

I would want this to fail

insert into my_table values ('4', 'Abcd', '{"b", "a"}');
insert into my_table values ('5', 'Abcd', '{"a", "b"}');

I am trying to impose the unique constraint on text_column and array_column.
Array_column is not sorted.
Also is it better way to do?