Hi,
Version 1.3.160:
create table node (id int auto_increment primary key, name varchar
unique, parent_id int references node(id));
alter table node add check (2 > (select count(id) from node where
parent_id is null)) check;
insert into node (name) values ('v1');
insert into node (name) values ('v2');
select * from node;
I expect the second insert to fail, since it will cause 2 rows with NULL
parent_id's. Is this a bug or is my expectation wrong?
Thanks,
Jesse
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