Bug#36921175 Complex Join Predicate with Subquery Not Possible To

Offload to HeatWave

Follow up fix for testcase failure in ndb_opt.join_pushdown_bka and
ndb_opt.join_pushdown_default. The used window function no longer need
filesort after the patch and this is indicated in the explain output.

[ 72%] ndb_opt.join_pushdown_bka                w14 [ fail ]
        Test ended at 2024-09-10 20:39:13

join_pushdown_bka.result
2024-09-10 20:15:22.000000000 +0300
+++ /dev/shm/mtr-742949/var-ndb/14/log/join_pushdown_bka.reject
2024-09-10 23:39:03.080405944 +0300
@@ -7981,8 +7981,7 @@
 -> Select #2 (subquery in projection; dependent)
     -> Limit: 1 row(s)
         -> Window aggregate with buffering: sum(t2.a) OVER w
-            -> Sort: t3.a
-                -> Table scan on t2
+            -> Table scan on t2

Change-Id: I5b753fa897fb22c7bd86908166b667794709f421

Author: blaudden

mysql-test/suite/ndb_opt/join_pushdown_bka.result

@@ -7981,8 +7981,7 @@ EXPLAIN
 -> Select #2 (subquery in projection; dependent)
     -> Limit: 1 row(s)
         -> Window aggregate with buffering: sum(t2.a) OVER w
-            -> Sort: t3.a
-                -> Table scan on t2
+            -> Table scan on t2
 
 Warnings:
 Note	1276	Field or reference 'test.t3.a' of SELECT #2 was resolved in SELECT #1

mysql-test/suite/ndb_opt/join_pushdown_default.result

@@ -7525,8 +7525,7 @@ EXPLAIN
 -> Select #2 (subquery in projection; dependent)
     -> Limit: 1 row(s)
         -> Window aggregate with buffering: sum(t2.a) OVER w
-            -> Sort: t3.a
-                -> Table scan on t2
+            -> Table scan on t2
 
 Warnings:
 Note	1276	Field or reference 'test.t3.a' of SELECT #2 was resolved in SELECT #1