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--source include/have_ndb.inc
#
# Test integration of pushed joins in ha_ndbcluster
# i.e the functionality where the mysqld calls ha_make_pushed_join()
# providing an Abstract_query_plan(aka. AQP) for the handler to examine
# in order to determine if some parts of the queries can be executed by
# the storage engine natively.
#
echo Check that ndb_join_pushdown variable exists and is enabled;
if (!`select @@ndb_join_pushdown`)
{
die Need ndb_join_pushdown enabled by default;
}
--echo #####
--echo # Create test table and data
create table t1 (
a int not null,
b int not null,
c int not null,
d int not null,
primary key (`a`,`b`)
) engine=ndbcluster;
insert into t1 values
(1,1,1,1), (2,2,2,2), (3,3,3,3), (4,4,4,4),
(1,2,5,1), (1,3,1,2), (1,4,2,3),
(2,1,3,4), (2,3,4,5), (2,4,5,1),
(3,1,1,2), (3,2,2,3), (3,4,3,4),
(4,1,4,5), (4,2,5,1), (4,3,1,2);
--echo ####
--echo # Check the basic pushed query
let $push_query =
select * from t1
join t1 as t2 on t2.a = t1.b and t2.b = t1.c;
let $push_expected = 1;
--source pushed_join.inc
--echo ####
--echo # Check that operation is not pushed as HASH_JOIN'ed tables are in
--echo # different 'Query_scope' branches in the AccessPath
let $push_query =
select straight_join count(*)
from t1 as x1
join t1 as x2 on x1.d > x2.a + 1000
join t1 as x3 on x1.c=x3.a and x1.d=x3.b;
let $push_expected = 0;
let $push_message = "is in a hash-bucket-branch which can't be referred";
--source pushed_join.inc
--echo ####
--echo # Check that operation is not pushed as HASH_JOIN'ed tables are in
--echo # different 'Query_scope' branches in the AccessPath. The other table
--echo # operations in the query are pushed though
let $push_query =
select *
from t1 as x1
join t1 as x2 on x1.a=1 and x1.c=x2.a and x1.d=x2.b
join t1 as x3
join t1 as x4 where x4.a=x3.c and x4.b=x1.d;
let $push_expected = 1;
let $push_message = "is in a hash-bucket-branch which can't be referred";
--source pushed_join.inc
drop table t1;
create table t1 (
a int primary key,
b int,
c int,
index(b,c)
) engine = ndb;
insert into t1 values (1,null, 2);
insert into t1 values (2,1, null);
insert into t1 values (3,2,2);
insert into t1 values (4,null, 2);
insert into t1 values (5,1, null);
insert into t1 values (6,2,2);
--echo ####
--echo # The query contains a 'dynamic range'("Range checked for each
--echo # record..") and access type can not be choosen at prepare time
--echo # Make sure t2 is not pushed.
let $push_query =
select *
from t1
join t1 as t2 on (t2.b = t1.b or t2.b = t1.a)
join t1 as t3 on t3.a = t2.a
join t1 as t4 on t4.a = t3.b /* index scan disguised as JT_ALL */;
let $push_expected = 1;
let $push_message =
"Table 't2' is not pushable: Access type was not chosen at 'prepare' time";
--source pushed_join.inc
drop table t1;
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