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Bug #27363:

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Validity checks for nested set functions
were not taking into account that the enclosed
set function may be on a nest level that is
lower than the nest level of the enclosing set
function.
Fixed by :
 - propagating max_sum_func_level
up the enclosing set functions chain.
 - updating the max_sum_func_level of the 
   enclosing set function when the enclosed set
   function is aggregated above or on the same
   nest level of as the level of the enclosing 
   set function.
 - updating the max_arg_level of the enclosing
   set function on a reference that refers to
   an item above or on the same nest level
   as the level of the enclosing set function.
 - Treating both Item_field and Item_ref as possibly
   referencing items from outer nest levels.
This commit is contained in:
gkodinov/kgeorge@magare.gmz
2007-04-26 11:12:17 +03:00
parent fca2a0c4ac
commit bfa29e175e
6 changed files with 166 additions and 4 deletions
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30
mysql-test/t/subselect.test
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@@ -2809,3 +2809,33 @@ SELECT a FROM t1 t0
SET @@sql_mode=default;
DROP TABLE t1;
#
# Bug #27363: nested aggregates in outer, subquery / sum(select
# count(outer))
#
CREATE TABLE t1 (a INT); INSERT INTO t1 values (1),(1),(1),(1);
CREATE TABLE t2 (x INT); INSERT INTO t1 values (1000),(1001),(1002);
--error ER_INVALID_GROUP_FUNC_USE
SELECT SUM( (SELECT COUNT(a) FROM t2) ) FROM t1;
--error ER_INVALID_GROUP_FUNC_USE
SELECT SUM( (SELECT SUM(COUNT(a)) FROM t2) ) FROM t1;
SELECT COUNT(1) FROM DUAL;
--error ER_INVALID_GROUP_FUNC_USE
SELECT SUM( (SELECT AVG( (SELECT t1.a FROM t2) ) FROM DUAL) ) FROM t1;
--error ER_INVALID_GROUP_FUNC_USE
SELECT
SUM( (SELECT AVG( (SELECT COUNT(*) FROM t1 t HAVING t1.a < 12) ) FROM t2) )
FROM t1;
--error ER_INVALID_GROUP_FUNC_USE
SELECT t1.a as XXA,
SUM( (SELECT AVG( (SELECT COUNT(*) FROM t1 t HAVING XXA < 12) ) FROM t2) )
FROM t1;
DROP TABLE t1,t2;
--echo End of 5.0 tests.