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Name	Size	Permission
basic.result	721 B	-rw-r--r--
basic.test	753 B	-rw-r--r--
drop_table.result	68 B	-rw-r--r--
drop_table.test	318 B	-rw-r--r--
gis.result	53.07 KB	-rw-r--r--
gis.test	219 B	-rw-r--r--
my.cnf	435 B	-rw-r--r--
pushed_join.inc	7.48 KB	-rw-r--r--
pushed_join.result	1.67 KB	-rw-r--r--
pushed_join.test	2.65 KB	-rw-r--r--

Code Editor : pushed_join.test

--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 if it prevents 'join buffer'
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 = "would prevent using join buffer for table 'x2'";
--source pushed_join.inc

--echo ####
--echo # Check that operation is not pushed if it prevents 'join buffer'
--echo # even though other operation is pushed
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 = "would prevent using join buffer for table 'x3'";
--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;

${this.title}

Code Editor : pushed_join.test