Merge commit '10.4' into 10.5

mysql-test/main/cte_recursive.test

@@ -2725,6 +2725,135 @@ deallocate prepare stmt;
 
 drop table t1;
 
+--echo #
+--echo # MDEV-24019: query with recursive CTE when no default database is set
+--echo #
+
+drop database test;
+
+let $q=
+with recursive a as
+   (select 1 from dual union select * from a as r)
+select * from a;
+
+eval $q;
+
+create database db1;
+create table db1.t1 (a int);
+insert into db1.t1 values (3), (7), (1);
+
+let $q=
+with recursive cte as
+  (select * from db1.t1 union select * from (select * from cte) as t)
+select * from cte;
+
+eval $q;
+eval explain $q;
+
+eval prepare stmt from "$q";
+execute stmt;
+execute stmt;
+deallocate prepare stmt;
+
+drop database db1;
+
+create database test;
+use test;
+
+--echo #
+--echo # MDEV-23406: query with mutually recursive CTEs when big_tables=1
+--echo #
+
+set @save_big_tables=@@big_tables;
+set big_tables=1;
+
+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);
+
+let q=
+with recursive
+ancestor_couples(h_id, h_name, h_dob, h_father, h_mother,
+                 w_id, w_name, w_dob, w_father, w_mother)
+as
+(
+  select h.*, w.*
+    from folks h, folks w,  coupled_ancestors a
+      where a.father = h.id AND a.mother = w.id
+  union
+  select h.*, w.*
+    from folks v, folks h, folks w
+      where v.name = 'Me' and
+            (v.father = h.id AND v.mother= w.id)
+),
+coupled_ancestors (id, name, dob, father, mother)
+as
+(
+  select h_id, h_name, h_dob, h_father, h_mother
+    from ancestor_couples
+  union
+  select w_id, w_name, w_dob, w_father, w_mother
+    from ancestor_couples
+)
+select h_name, h_dob, w_name, w_dob
+  from ancestor_couples;
+
+eval $q;
+eval explain $q;
+eval prepare stmt from "$q";
+execute stmt;
+execute stmt;
+deallocate prepare stmt;
+
+let $q=
+with recursive
+ancestor_couples(h_id, h_name, h_dob, h_father, h_mother,
+                 w_id, w_name, w_dob, w_father, w_mother)
+as
+(
+  select h.*, w.*
+    from folks h, folks w,  coupled_ancestors a
+      where a.father = h.id AND a.mother = w.id
+),
+coupled_ancestors (id, name, dob, father, mother)
+as
+(
+  select *
+    from folks
+      where name = 'Me'
+  union all
+  select h_id, h_name, h_dob, h_father, h_mother
+    from ancestor_couples
+  union all
+  select w_id, w_name, w_dob, w_father, w_mother
+    from ancestor_couples
+)
+select h_name, h_dob, w_name, w_dob
+  from ancestor_couples;
+
+eval $q;
+eval explain $q;
+eval prepare stmt from "$q";
+execute stmt;
+execute stmt;
+deallocate prepare stmt;
+
+drop table folks;
+
+set big_tables=@save_big_tables;
+
 --echo #
 --echo # End of 10.2 tests
 --echo #