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Merge pull request #1749 from tntnatbry/MCOL-4493-develop

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MCOL 4493
This commit is contained in:
Roman Nozdrin
2021-02-05 12:19:32 +03:00
committed by GitHub
parent d2cc656fdf abf45bf46c
commit 049d60f1cf
3 changed files with 266 additions and 2 deletions
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4
dbcon/mysql/ha_mcs_execplan.cpp
View File

@ -1320,7 +1320,7 @@ uint32_t buildOuterJoin(gp_walk_info& gwi, SELECT_LEX& select_lex)
(table_ptr->alias.length ? table_ptr->alias.str : ""), (table_ptr->alias.length ? table_ptr->alias.str : ""),
getViewName(table_ptr), true, lower_case_table_names); getViewName(table_ptr), true, lower_case_table_names);
if (table_ptr->outer_join && table_ptr->on_expr) if ((table_ptr->outer_join & (JOIN_TYPE_LEFT | JOIN_TYPE_RIGHT)) && table_ptr->on_expr)
{ {
// inner tables block // inner tables block
Item_cond* expr = reinterpret_cast<Item_cond*>(table_ptr->on_expr); Item_cond* expr = reinterpret_cast<Item_cond*>(table_ptr->on_expr);
@ -6297,7 +6297,7 @@ int processFrom(bool &isUnion,
} }
// Save on_expr to use it for WHERE processing // Save on_expr to use it for WHERE processing
if (!table_ptr->outer_join && table_ptr->on_expr) if (!(table_ptr->outer_join & (JOIN_TYPE_LEFT | JOIN_TYPE_RIGHT)) && table_ptr->on_expr)
{ {
on_expr_list.push_back(table_ptr->on_expr); on_expr_list.push_back(table_ptr->on_expr);
} }

132
mtr/bugfixes/mcol-4493.result Normal file
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@ -0,0 +1,132 @@
DROP DATABASE IF EXISTS mcol_4493;
CREATE DATABASE mcol_4493;
USE mcol_4493;
CREATE TABLE t1 (a CHAR(10), b INT) ENGINE=columnstore;
INSERT INTO t1 VALUES ('a', 1), ('b', 2), ('c', 3);
CREATE TABLE t2 (a INT) ENGINE=columnstore;
INSERT INTO t2 values (2), (3);
SELECT * FROM t1 LEFT JOIN
(SELECT table1.a FROM t2 table1 INNER JOIN t2 table2
ON table1.a=table2.a AND table1.a=1) _h
ON t1.b=_h.a ORDER BY t1.a;
a b a
a 1 NULL
b 2 NULL
c 3 NULL
SELECT * FROM t1 LEFT JOIN
(SELECT table1.a FROM t2 table1 INNER JOIN t2 table2
ON table1.a=table2.a AND table1.a=2) _h
ON t1.b=_h.a ORDER BY t1.a;
a b a
a 1 NULL
b 2 2
c 3 NULL
SELECT * FROM t1 LEFT JOIN
(SELECT table1.a FROM t2 table1 INNER JOIN t2 table2
ON table1.a=table2.a AND table1.a=3) _h
ON t1.b=_h.a ORDER BY t1.a;
a b a
a 1 NULL
b 2 NULL
c 3 3
SELECT * FROM t1 LEFT JOIN
(SELECT table1.a FROM t2 table1 INNER JOIN t2 table2
ON table1.a=table2.a) _h
ON t1.b=_h.a ORDER BY t1.a;
a b a
a 1 NULL
b 2 2
c 3 3
SELECT * FROM t1 LEFT JOIN
(SELECT table3.a FROM t2 table3 INNER JOIN
(SELECT table1.a FROM t2 table1 INNER JOIN t2 table2
ON table1.a=table2.a AND table1.a=1) _h ON table3.a=_h.a) _g
ON t1.b=_g.a ORDER BY t1.a;
a b a
a 1 NULL
b 2 NULL
c 3 NULL
SELECT * FROM t1 LEFT JOIN
(SELECT table3.a FROM t2 table3 INNER JOIN
(SELECT table1.a FROM t2 table1 INNER JOIN t2 table2
ON table1.a=table2.a AND table1.a=2) _h ON table3.a=_h.a) _g
ON t1.b=_g.a ORDER BY t1.a;
a b a
a 1 NULL
b 2 2
c 3 NULL
SELECT * FROM t1 LEFT JOIN
(SELECT table3.a FROM t2 table3 INNER JOIN
(SELECT table1.a FROM t2 table1 INNER JOIN t2 table2
ON table1.a=table2.a AND table1.a=3) _h ON table3.a=_h.a) _g
ON t1.b=_g.a ORDER BY t1.a;
a b a
a 1 NULL
b 2 NULL
c 3 3
SELECT * FROM t1 LEFT JOIN
(SELECT table3.a FROM t2 table3 INNER JOIN
(SELECT table1.a FROM t2 table1 INNER JOIN t2 table2
ON table1.a=table2.a) _h ON table3.a=_h.a) _g
ON t1.b=_g.a ORDER BY t1.a;
a b a
a 1 NULL
b 2 2
c 3 3
SELECT * FROM
(SELECT table1.a, table1.b FROM t1 table1 INNER JOIN t2 table2
ON table1.b=table2.a) _g
LEFT JOIN
(SELECT table1.a FROM t2 table1 INNER JOIN t2 table2
ON table1.a=table2.a) _h
ON _g.b=_h.a ORDER BY _g.a;
a b a
b 2 2
c 3 3
SELECT * FROM
(SELECT table1.a, table1.b FROM t1 table1 INNER JOIN t2 table2
ON table1.b=table2.a AND table1.b=2) _g
LEFT JOIN
(SELECT table1.a FROM t2 table1 INNER JOIN t2 table2
ON table1.a=table2.a AND (table1.a=1 OR table1.a=2)) _h
ON _g.b=_h.a ORDER BY _g.a;
a b a
b 2 2
SELECT * FROM
(SELECT table1.a, table1.b FROM t1 table1 INNER JOIN t2 table2
ON table1.b=table2.a AND (table1.b=2 OR table1.b=1)) _g
LEFT JOIN
(SELECT table1.a FROM t2 table1 INNER JOIN t2 table2
ON table1.a=table2.a AND (table1.a=1 OR table1.a=3)) _h
ON _g.b=_h.a ORDER BY _g.a;
a b a
b 2 NULL
SELECT * FROM
(SELECT table1.a, table1.b FROM t1 table1 INNER JOIN t2 table2
ON table1.b=table2.a AND table1.b=1) _g
LEFT JOIN
(SELECT table1.a FROM t2 table1 INNER JOIN t2 table2
ON table1.a=table2.a) _h
ON _g.b=_h.a ORDER BY _g.a;
a b a
SELECT * FROM
(SELECT table1.a, table1.b FROM t1 table1 INNER JOIN t2 table2
ON table1.b=table2.a) _g
LEFT JOIN
(SELECT table1.a FROM t2 table1 INNER JOIN t2 table2
ON table1.a=table2.a AND table1.a=1) _h
ON _g.b=_h.a ORDER BY _g.a;
a b a
b 2 NULL
c 3 NULL
SELECT * FROM
(SELECT table1.a, table1.b FROM t1 table1 INNER JOIN t2 table2
ON table1.b=table2.a) _g
LEFT JOIN
(SELECT table1.a FROM t2 table1 INNER JOIN t2 table2
ON table1.a=table2.a AND (table1.a=1 OR table1.a=2)) _h
ON _g.b=_h.a ORDER BY _g.a;
a b a
b 2 2
c 3 NULL
DROP DATABASE mcol_4493;

132
mtr/bugfixes/mcol-4493.test Normal file
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@ -0,0 +1,132 @@
# Test case for MCOL-4493
# This test case demonstrates that the WHERE condition
# used in the ON expression of an INNER JOIN used in a
# subquery as the LEFT side of an outer join is getting
# processed correctly.
-- source ../include/have_columnstore.inc
-- disable_warnings
DROP DATABASE IF EXISTS mcol_4493;
-- enable_warnings
CREATE DATABASE mcol_4493;
USE mcol_4493;
CREATE TABLE t1 (a CHAR(10), b INT) ENGINE=columnstore;
INSERT INTO t1 VALUES ('a', 1), ('b', 2), ('c', 3);
CREATE TABLE t2 (a INT) ENGINE=columnstore;
INSERT INTO t2 values (2), (3);
# Test single INNER JOIN
## Test impossible WHERE condition in the ON expression
SELECT * FROM t1 LEFT JOIN
(SELECT table1.a FROM t2 table1 INNER JOIN t2 table2
ON table1.a=table2.a AND table1.a=1) _h
ON t1.b=_h.a ORDER BY t1.a;
## Test possible WHERE condition in the ON expression
SELECT * FROM t1 LEFT JOIN
(SELECT table1.a FROM t2 table1 INNER JOIN t2 table2
ON table1.a=table2.a AND table1.a=2) _h
ON t1.b=_h.a ORDER BY t1.a;
## Test possible WHERE condition in the ON expression
SELECT * FROM t1 LEFT JOIN
(SELECT table1.a FROM t2 table1 INNER JOIN t2 table2
ON table1.a=table2.a AND table1.a=3) _h
ON t1.b=_h.a ORDER BY t1.a;
## Test the INNER JOIN without a WHERE condition
SELECT * FROM t1 LEFT JOIN
(SELECT table1.a FROM t2 table1 INNER JOIN t2 table2
ON table1.a=table2.a) _h
ON t1.b=_h.a ORDER BY t1.a;
# Test nested INNER JOIN
## Test impossible WHERE condition in the ON expression
SELECT * FROM t1 LEFT JOIN
(SELECT table3.a FROM t2 table3 INNER JOIN
(SELECT table1.a FROM t2 table1 INNER JOIN t2 table2
ON table1.a=table2.a AND table1.a=1) _h ON table3.a=_h.a) _g
ON t1.b=_g.a ORDER BY t1.a;
## Test possible WHERE condition in the ON expression
SELECT * FROM t1 LEFT JOIN
(SELECT table3.a FROM t2 table3 INNER JOIN
(SELECT table1.a FROM t2 table1 INNER JOIN t2 table2
ON table1.a=table2.a AND table1.a=2) _h ON table3.a=_h.a) _g
ON t1.b=_g.a ORDER BY t1.a;
## Test possible WHERE condition in the ON expression
SELECT * FROM t1 LEFT JOIN
(SELECT table3.a FROM t2 table3 INNER JOIN
(SELECT table1.a FROM t2 table1 INNER JOIN t2 table2
ON table1.a=table2.a AND table1.a=3) _h ON table3.a=_h.a) _g
ON t1.b=_g.a ORDER BY t1.a;
## Test the INNER JOIN without a WHERE condition
SELECT * FROM t1 LEFT JOIN
(SELECT table3.a FROM t2 table3 INNER JOIN
(SELECT table1.a FROM t2 table1 INNER JOIN t2 table2
ON table1.a=table2.a) _h ON table3.a=_h.a) _g
ON t1.b=_g.a ORDER BY t1.a;
# Test INNER JOIN as both LEFT and RIGHT side of outer LEFT JOIN
## Without a WHERE condition
SELECT * FROM
(SELECT table1.a, table1.b FROM t1 table1 INNER JOIN t2 table2
ON table1.b=table2.a) _g
LEFT JOIN
(SELECT table1.a FROM t2 table1 INNER JOIN t2 table2
ON table1.a=table2.a) _h
ON _g.b=_h.a ORDER BY _g.a;
## With a possible WHERE condition case 1
SELECT * FROM
(SELECT table1.a, table1.b FROM t1 table1 INNER JOIN t2 table2
ON table1.b=table2.a AND table1.b=2) _g
LEFT JOIN
(SELECT table1.a FROM t2 table1 INNER JOIN t2 table2
ON table1.a=table2.a AND (table1.a=1 OR table1.a=2)) _h
ON _g.b=_h.a ORDER BY _g.a;
## With a possible WHERE condition case 2
SELECT * FROM
(SELECT table1.a, table1.b FROM t1 table1 INNER JOIN t2 table2
ON table1.b=table2.a AND (table1.b=2 OR table1.b=1)) _g
LEFT JOIN
(SELECT table1.a FROM t2 table1 INNER JOIN t2 table2
ON table1.a=table2.a AND (table1.a=1 OR table1.a=3)) _h
ON _g.b=_h.a ORDER BY _g.a;
## With an impossible WHERE condition case 1
SELECT * FROM
(SELECT table1.a, table1.b FROM t1 table1 INNER JOIN t2 table2
ON table1.b=table2.a AND table1.b=1) _g
LEFT JOIN
(SELECT table1.a FROM t2 table1 INNER JOIN t2 table2
ON table1.a=table2.a) _h
ON _g.b=_h.a ORDER BY _g.a;
## With an impossible WHERE condition case 2
SELECT * FROM
(SELECT table1.a, table1.b FROM t1 table1 INNER JOIN t2 table2
ON table1.b=table2.a) _g
LEFT JOIN
(SELECT table1.a FROM t2 table1 INNER JOIN t2 table2
ON table1.a=table2.a AND table1.a=1) _h
ON _g.b=_h.a ORDER BY _g.a;
## With an impossible WHERE condition case 3
SELECT * FROM
(SELECT table1.a, table1.b FROM t1 table1 INNER JOIN t2 table2
ON table1.b=table2.a) _g
LEFT JOIN
(SELECT table1.a FROM t2 table1 INNER JOIN t2 table2
ON table1.a=table2.a AND (table1.a=1 OR table1.a=2)) _h
ON _g.b=_h.a ORDER BY _g.a;
# cleanup
DROP DATABASE mcol_4493;