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[MCOL-5061] Fix wrong join id assignment for the views. (#2474)

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This patch fixes a wrong `join id` assignment for `TupleHashJoinStep` in a view.
After MCOL-334 CS assigns a '-1' as `join id` for `TupleHashJoinStep` in a view, and
in this case we cannot apply a filter for specific `Join step`, which is associated with `join id`
for 2 reasons:
1. Filters for all `TupleHashJoinSteps` associated with the same `join id`, which is '-1'.
2. When CS creates a `joinIdIndexMap` it eliminates all `join ids` which a less or equal 0.

This patch also fixes some tests for the view, which were generated wrong results.
This commit is contained in:
Denis Khalikov
2022-07-25 20:02:02 +03:00
committed by GitHub
parent 627a4b5819
commit e519cd7486
6 changed files with 107 additions and 51 deletions
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20
mysql-test/columnstore/bugfixes/mcol-5061.result Normal file
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DROP DATABASE IF EXISTS mcol_5061;
CREATE DATABASE mcol_5061;
USE mcol_5061;
create table t1 (a int, b int) engine=columnstore;
create table t2 (a int, b int) engine=columnstore;
insert into t1 values (1, 3), (2, 3), (3, 4);
insert into t2 values (1, 2), (2, 4), (4, 5);
select t1.a as a, t1.b as b, t2.a as c, t2.b as d, t2_1.a as e, t2_1.b as f from t1 left join t2 on (t1.a = t2.a and t2.a > 1) left join t2 as t2_1 on (t1.b = t2_1.b and t2_1.a > 1);
a b c d e f
1 3 NULL NULL NULL NULL
2 3 2 4 NULL NULL
3 4 NULL NULL 2 4
create or replace view view_test as
select t1.a as a, t1.b as b, t2.a as c, t2.b as d, t2_1.a as e, t2_1.b as f from t1 left join t2 on (t1.a = t2.a and t2.a > 1) left join t2 as t2_1 on (t1.b = t2_1.b and t2_1.a > 1);
select * from view_test;
a b c d e f
1 3 NULL NULL NULL NULL
2 3 2 4 NULL NULL
3 4 NULL NULL 2 4
DROP DATABASE mcol_5061;

26
mysql-test/columnstore/bugfixes/mcol-5061.test Normal file
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#
# Test based on Jira MCOL-5061
# Reduced customer test case.
#
--source ../include/have_columnstore.inc
--disable_warnings
DROP DATABASE IF EXISTS mcol_5061;
--enable_warnings
CREATE DATABASE mcol_5061;
USE mcol_5061;
create table t1 (a int, b int) engine=columnstore;
create table t2 (a int, b int) engine=columnstore;
insert into t1 values (1, 3), (2, 3), (3, 4);
insert into t2 values (1, 2), (2, 4), (4, 5);
select t1.a as a, t1.b as b, t2.a as c, t2.b as d, t2_1.a as e, t2_1.b as f from t1 left join t2 on (t1.a = t2.a and t2.a > 1) left join t2 as t2_1 on (t1.b = t2_1.b and t2_1.a > 1);
create or replace view view_test as
select t1.a as a, t1.b as b, t2.a as c, t2.b as d, t2_1.a as e, t2_1.b as f from t1 left join t2 on (t1.a = t2.a and t2.a > 1) left join t2 as t2_1 on (t1.b = t2_1.b and t2_1.a > 1);
select * from view_test;
DROP DATABASE mcol_5061;