Merge bb-10.2-ext into 10.3

1 files changed, 68 insertions, 0 deletions

diff --git a/mysql-test/r/cte_nonrecursive.result b/mysql-test/r/cte_nonrecursive.result
index 3ad6fb8fabe..d0e42cf4042 100644
--- a/mysql-test/r/cte_nonrecursive.result
+++ b/mysql-test/r/cte_nonrecursive.result
@@ -1079,3 +1079,71 @@ id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
 3	DERIVED	t2	ALL	NULL	NULL	NULL	NULL	3	Using where; Using join buffer (flat, BNL join)
 NULL	UNION RESULT	<union1,4>	ALL	NULL	NULL	NULL	NULL	NULL	
 DROP TABLE t1,t2;
+#
+# MDEV-13780: tower of embedding CTEs with multiple usage of them
+#
+create table t1 (a int);
+insert into t1 values (3), (2), (4), (7), (1), (2), (5);
+with cte_e as
+(
+with cte_o as
+(
+with cte_i as (select * from t1 where a < 7)
+select * from cte_i where a > 1
+)
+select * from cte_o as cto_o1 where a < 3
+union
+select * from cte_o as cto_o2 where a > 4
+)
+select * from cte_e as cte_e1 where a > 1
+union
+select * from cte_e as cte_e2;
+a
+2
+5
+explain extended with cte_e as
+(
+with cte_o as
+(
+with cte_i as (select * from t1 where a < 7)
+select * from cte_i where a > 1
+)
+select * from cte_o as cto_o1 where a < 3
+union
+select * from cte_o as cto_o2 where a > 4
+)
+select * from cte_e as cte_e1 where a > 1
+union
+select * from cte_e as cte_e2;
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
+1	PRIMARY	<derived2>	ALL	NULL	NULL	NULL	NULL	14	100.00	Using where
+2	DERIVED	t1	ALL	NULL	NULL	NULL	NULL	7	100.00	Using where
+5	UNION	t1	ALL	NULL	NULL	NULL	NULL	7	100.00	Using where
+NULL	UNION RESULT	<union2,5>	ALL	NULL	NULL	NULL	NULL	NULL	NULL	
+6	UNION	<derived9>	ALL	NULL	NULL	NULL	NULL	14	100.00	
+9	DERIVED	t1	ALL	NULL	NULL	NULL	NULL	7	100.00	Using where
+12	UNION	t1	ALL	NULL	NULL	NULL	NULL	7	100.00	Using where
+NULL	UNION RESULT	<union9,12>	ALL	NULL	NULL	NULL	NULL	NULL	NULL	
+NULL	UNION RESULT	<union1,6>	ALL	NULL	NULL	NULL	NULL	NULL	NULL	
+Warnings:
+Note	1003	with cte_e as (with cte_o as (with cte_i as (/* select#4 */ select `test`.`t1`.`a` AS `a` from `test`.`t1` where `test`.`t1`.`a` < 7)/* select#3 */ select `test`.`t1`.`a` AS `a` from `test`.`t1` where `test`.`t1`.`a` > 1)/* select#2 */ select `test`.`t1`.`a` AS `a` from `test`.`t1` where `test`.`t1`.`a` < 3 and `test`.`t1`.`a` > 1 and `test`.`t1`.`a` < 7 and `test`.`t1`.`a` > 1 union /* select#5 */ select `test`.`t1`.`a` AS `a` from `test`.`t1` where `test`.`t1`.`a` > 4 and `test`.`t1`.`a` > 1 and `test`.`t1`.`a` < 7 and `test`.`t1`.`a` > 1)/* select#1 */ select `cte_e1`.`a` AS `a` from `cte_e` `cte_e1` where `cte_e1`.`a` > 1 union /* select#6 */ select `cte_e2`.`a` AS `a` from `cte_e` `cte_e2`
+drop table t1;
+#
+# MDEV-13753: embedded CTE in a VIEW created in prepared statement
+#
+SET @sql_query = "
+  CREATE OR REPLACE VIEW cte_test AS
+   WITH  cte1  AS ( SELECT 1 as a from dual )
+    ,    cte2  AS ( SELECT * FROM cte1 )
+    SELECT * FROM cte2;
+";
+PREPARE stmt FROM @sql_query;
+EXECUTE stmt;
+DEALLOCATE PREPARE stmt;
+SHOW CREATE VIEW cte_test;
+View	Create View	character_set_client	collation_connection
+cte_test	CREATE ALGORITHM=UNDEFINED DEFINER=`root`@`localhost` SQL SECURITY DEFINER VIEW `cte_test` AS with cte1 as (select 1 AS `a`), cte2 as (select `cte1`.`a` AS `a` from `cte1`)select `cte2`.`a` AS `a` from `cte2`	latin1	latin1_swedish_ci
+SELECT * FROM cte_test;
+a
+1
+DROP VIEW cte_test;