Default behaviour SQL

 
create table choice_architecture (
  im_opt_out_by varchar2(100) default 'so most will have this value',
  but_we_are_opt_in varchar2(100),
  so_often_have_no_value_set varchar2(100),
  unless_we_constraint_us_as varchar2(100) not null
)
/

insert into choice_architecture (unless_we_constraint_us_as) 
values ('In which case we''re forced into making a decision!');

select * from choice_architecture ;

drop table choice_architecture purge;

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