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The following test case fails with the error message
{noformat}
ERROR 4008 (HY000): Restrictions imposed on recursive definitions are violated for table 'ancestor_ids'
{noformat}
{noformat}
create table folks(id int, name char(32), dob date, father int, mother int);
insert into folks values
(100, 'Me', '2000-01-01', 20, 30),
(20, 'Dad', '1970-02-02', 10, 9),
(30, 'Mom', '1975-03-03', 8, 7),
(10, 'Grandpa Bill', '1940-04-05', null, null),
(9, 'Grandma Ann', '1941-10-15', null, null),
(25, 'Uncle Jim', '1968-11-18', 8, 7),
(98, 'Sister Amy', '2001-06-20', 20, 30),
(7, 'Grandma Sally', '1943-08-23', null, 6),
(8, 'Grandpa Ben', '1940-10-21', null, null),
(6, 'Grandgrandma Martha', '1923-05-17', null, null),
(67, 'Cousin Eddie', '1992-02-28', 25, 27),
(27, 'Auntie Melinda', '1971-03-29', null, null);
with recursive
ancestor_ids (id)
as
(
select father from folks where name = 'Me'
union
select mother from folks where name = 'Me'
union
select father from ancestor_ids as a left join folks on folks.id = a.id
union
select mother from ancestor_ids as a left join folks on folks.id = a.id
),
ancestors
as
(
select p.* from folks as p, ancestor_ids as a
where p.id = a.id
)
select * from ancestors;
{noformat}
Meanwhile the specification for CTE ancestors is quite valid as the recursive reference is in left operand of left join operation.
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The following test case fails with the error message
{noformat}
ERROR 4008 (HY000): Restrictions imposed on recursive definitions are violated for table 'ancestor_ids'
{noformat}
{noformat}
create table folks(id int, name char(32), dob date, father int, mother int);
insert into folks values
(100, 'Me', '2000-01-01', 20, 30),
(20, 'Dad', '1970-02-02', 10, 9),
(30, 'Mom', '1975-03-03', 8, 7),
(10, 'Grandpa Bill', '1940-04-05', null, null),
(9, 'Grandma Ann', '1941-10-15', null, null),
(25, 'Uncle Jim', '1968-11-18', 8, 7),
(98, 'Sister Amy', '2001-06-20', 20, 30),
(7, 'Grandma Sally', '1943-08-23', null, 6),
(8, 'Grandpa Ben', '1940-10-21', null, null),
(6, 'Grandgrandma Martha', '1923-05-17', null, null),
(67, 'Cousin Eddie', '1992-02-28', 25, 27),
(27, 'Auntie Melinda', '1971-03-29', null, null);
with recursive
ancestor_ids (id)
as
(
select father from folks where name = 'Me'
union
select mother from folks where name = 'Me'
union
select father from ancestor_ids as a left join folks on folks.id = a.id
union
select mother from ancestor_ids as a left join folks on folks.id = a.id
),
ancestors
as
(
select p.* from folks as p, ancestor_ids as a
where p.id = a.id
)
select * from ancestors;
{noformat}
Meanwhile the specification for CTE ancestors is quite valid as the recursive reference is in left operand of left join operation.
Bug
Major
The fix for this bug was pushed into the 10.2 tree.