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scalar_subqueries_select_list.slt
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scalar_subqueries_select_list.slt
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# Copyright Materialize, Inc. and contributors. All rights reserved.
#
# Use of this software is governed by the Business Source License
# included in the LICENSE file at the root of this repository.
#
# As of the Change Date specified in that file, in accordance with
# the Business Source License, use of this software will be governed
# by the Apache License, Version 2.0.
#
# Test that multiple scalar subqueries are properly flattened by #8582 whenever possible.
#
# For eligible queries:
# - a (number_of_subqueries + 1)-way join is expected at the bottom of the plan
# - any comonality of the subqueries will be detected by the CSE transform
# - the operators that check for more than 1 row returned from the subquery will appear only once
#
mode cockroach
statement ok
CREATE TABLE t1 (
f1 INTEGER
)
statement ok
INSERT INTO t1 VALUES (1), (2), (3)
statement ok
CREATE TABLE t2 (
f1 INTEGER
)
statement ok
INSERT INTO t2 VALUES (1), (2), (3)
statement ok
CREATE TABLE t3 (
f1 INTEGER
)
statement ok
INSERT INTO t3 VALUES (1), (2), (3)
#
# Uncorrelated
#
query T multiline
EXPLAIN SELECT (SELECT * FROM t1), (SELECT * FROM t1) FROM t2
----
%0 =
| Get materialize.public.t1 (u1)
%1 =
| Get materialize.public.t1 (u1)
| Project ()
| Reduce group=()
| | agg count(true)
| Filter (#0 > 1)
| Project ()
| Map (err: more than one record produced in subquery)
%2 = Let l0 =
| Union %0 %1
%3 =
| Get materialize.public.t2 (u3)
| Project ()
| ArrangeBy ()
%4 =
| Get %2 (l0)
| Project ()
| Distinct group=()
| Negate
%5 =
| Constant ()
%6 =
| Union %4 %5
| Map null
%7 =
| Union %2 %6
%8 =
| Join %3 %7
| | implementation = Differential %7 %3.()
| Project (#0, #0)
EOF
#
# Correlated, identical subqueries
#
query T multiline
EXPLAIN SELECT (SELECT * FROM t1 WHERE t1.f1 = t2.f1) , (SELECT * FROM t1 WHERE t1.f1 = t2.f1) FROM t2
----
%0 = Let l0 =
| Get materialize.public.t2 (u3)
| Distinct group=(#0)
%1 =
| Get %0 (l0)
| ArrangeBy (#0)
%2 =
| Get materialize.public.t1 (u1)
| ArrangeBy (#0)
%3 = Let l1 =
| Join %1 %2 (= #0 #1)
| | implementation = DeltaQuery
| | delta %1 %2.(#0)
| | delta %2 %1.(#0)
| Filter !(isnull(#0))
| Project (#0)
%4 =
| Get %3 (l1)
| Project (#0, #0)
%5 =
| Get %3 (l1)
| Reduce group=(#0)
| | agg count(true)
| Filter (#1 > 1)
| Project (#0)
| Map (err: more than one record produced in subquery)
%6 = Let l2 =
| Union %4 %5
%7 =
| Get materialize.public.t2 (u3)
| ArrangeBy (#0)
%8 =
| Get %6 (l2)
| Project (#0)
| Distinct group=(#0)
| Negate
%9 =
| Union %8 %0
| Map null
%10 =
| Union %6 %9
%11 =
| Join %7 %10 (= #0 #1)
| | implementation = Differential %10 %7.(#0)
| Project (#2, #2)
EOF
query II rowsort
SELECT (SELECT * FROM t1 WHERE t1.f1 = t2.f1) , (SELECT * FROM t1 WHERE t1.f1 = t2.f1) FROM t2
----
1 1
2 2
3 3
query I
SELECT COUNT(*) FROM (SELECT (SELECT * FROM t1 WHERE t1.f1 = t2.f1) , (SELECT * FROM t1 WHERE t1.f1 = t2.f1) FROM t2)
----
3
query T multiline
EXPLAIN SELECT (SELECT * FROM t1 WHERE t1.f1 = t2.f1 + 1 UNION ALL SELECT * FROM t1 WHERE t1.f1 = t2.f1 + 2) , (SELECT * FROM t1 WHERE t1.f1 = t2.f1 + 1 UNION ALL SELECT * FROM t1 WHERE t1.f1 = t2.f1 + 2) FROM t2
----
%0 = Let l0 =
| Get materialize.public.t2 (u3)
| Distinct group=(#0)
%1 = Let l1 =
| Get %0 (l0)
| Filter !(isnull(#0))
%2 = Let l2 =
| Get materialize.public.t1 (u1)
| ArrangeBy (#0)
%3 =
| Join %1 %2 (= #1 (#0 + 1))
| | implementation = Differential %1 %2.(#0)
| Filter !(isnull(#1))
%4 =
| Join %1 %2 (= #1 (#0 + 2))
| | implementation = Differential %1 %2.(#0)
| Filter !(isnull(#1))
%5 = Let l3 =
| Union %3 %4
%6 =
| Get %5 (l3)
| Project (#0)
| Reduce group=(#0)
| | agg count(true)
| Filter (#1 > 1)
| Project (#0)
| Map (err: more than one record produced in subquery)
%7 = Let l4 =
| Union %5 %6
%8 =
| Get materialize.public.t2 (u3)
| ArrangeBy (#0)
%9 =
| Get %7 (l4)
| Project (#0)
| Distinct group=(#0)
| Negate
%10 =
| Union %9 %0
| Map null
%11 =
| Union %7 %10
%12 =
| Join %8 %11 (= #0 #1)
| | implementation = Differential %11 %8.(#0)
| Project (#2, #2)
EOF
#
# Correlated, with distinct WHERE clauses
#
query T multiline
EXPLAIN SELECT (SELECT * FROM t1 WHERE t1.f1 = t2.f1 + 1) , (SELECT * FROM t1 WHERE t1.f1 = t2.f1 + 2) FROM t2
----
%0 = Let l0 =
| Get materialize.public.t2 (u3)
| Distinct group=(#0)
%1 = Let l1 =
| Get %0 (l0)
| Filter !(isnull(#0))
%2 = Let l2 =
| Get materialize.public.t1 (u1)
| ArrangeBy (#0)
%3 = Let l3 =
| Join %1 %2 (= #1 (#0 + 1))
| | implementation = Differential %1 %2.(#0)
| Filter !(isnull(#1))
%4 =
| Get %3 (l3)
| Project (#0)
| Reduce group=(#0)
| | agg count(true)
| Filter (#1 > 1)
| Project (#0)
| Map (err: more than one record produced in subquery)
%5 = Let l4 =
| Union %3 %4
%6 = Let l5 =
| Join %1 %2 (= #1 (#0 + 2))
| | implementation = Differential %1 %2.(#0)
| Filter !(isnull(#1))
%7 =
| Get %6 (l5)
| Project (#0)
| Reduce group=(#0)
| | agg count(true)
| Filter (#1 > 1)
| Project (#0)
| Map (err: more than one record produced in subquery)
%8 = Let l6 =
| Union %6 %7
%9 =
| Get materialize.public.t2 (u3)
| ArrangeBy (#0)
%10 =
| Get %5 (l4)
| Project (#0)
| Distinct group=(#0)
| Negate
%11 =
| Union %10 %0
| Map null
%12 =
| Union %5 %11
| ArrangeBy (#0)
%13 =
| Get %8 (l6)
| Project (#0)
| Distinct group=(#0)
| Negate
%14 =
| Union %13 %0
| Map null
%15 =
| Union %8 %14
%16 =
| Join %9 %12 %15 (= #0 #1 #3)
| | implementation = Differential %15 %9.(#0) %12.(#0)
| Project (#2, #4)
EOF
query II
SELECT (SELECT * FROM t1 WHERE t1.f1 = t2.f1 + 1) , (SELECT * FROM t1 WHERE t1.f1 = t2.f1 + 2) FROM t2
----
NULL NULL
3 NULL
2 3
#
# Correlated, with distinct SELECT lists
#
query T multiline
EXPLAIN SELECT (SELECT f1 + 1 FROM t1 WHERE t1.f1 = t2.f1) , (SELECT f1 + 2 FROM t1 WHERE t1.f1 = t2.f1) FROM t2
----
%0 = Let l0 =
| Get materialize.public.t2 (u3)
| Distinct group=(#0)
%1 =
| Get %0 (l0)
| ArrangeBy (#0)
%2 =
| Get materialize.public.t1 (u1)
| ArrangeBy (#0)
%3 = Let l1 =
| Join %1 %2 (= #0 #1)
| | implementation = DeltaQuery
| | delta %1 %2.(#0)
| | delta %2 %1.(#0)
| Filter !(isnull(#0))
| Project (#0)
%4 = Let l2 =
| Get %3 (l1)
| Reduce group=(#0)
| | agg count(true)
| Filter (#1 > 1)
| Project (#0)
| Map (err: more than one record produced in subquery)
%5 =
| Get %3 (l1)
| Map (#0 + 1)
%6 = Let l3 =
| Union %5 %4
%7 =
| Get %3 (l1)
| Map (#0 + 2)
%8 = Let l4 =
| Union %7 %4
%9 =
| Get materialize.public.t2 (u3)
| ArrangeBy (#0)
%10 =
| Get %6 (l3)
| Project (#0)
| Distinct group=(#0)
| Negate
%11 =
| Union %10 %0
| Map null
%12 =
| Union %6 %11
| ArrangeBy (#0)
%13 =
| Get %8 (l4)
| Project (#0)
| Distinct group=(#0)
| Negate
%14 =
| Union %13 %0
| Map null
%15 =
| Union %8 %14
%16 =
| Join %9 %12 %15 (= #0 #1 #3)
| | implementation = Differential %15 %9.(#0) %12.(#0)
| Project (#2, #4)
EOF
query II
SELECT (SELECT f1 + 1 FROM t1 WHERE t1.f1 = t2.f1) , (SELECT f1 + 2 FROM t1 WHERE t1.f1 = t2.f1) FROM t2
----
2 3
3 4
4 5
query T multiline
EXPLAIN SELECT (SELECT MIN(f1) FROM t1 WHERE t1.f1 = t2.f1) , (SELECT MAX(f1) FROM t1 WHERE t1.f1 = t2.f1) FROM t2
----
%0 = Let l0 =
| Get materialize.public.t2 (u3)
| Distinct group=(#0)
%1 =
| Get %0 (l0)
| ArrangeBy (#0)
%2 =
| Get materialize.public.t1 (u1)
| ArrangeBy (#0)
%3 = Let l1 =
| Join %1 %2 (= #0 #1)
| | implementation = DeltaQuery
| | delta %1 %2.(#0)
| | delta %2 %1.(#0)
| Filter !(isnull(#0))
| Project (#0)
%4 = Let l2 =
| Get %3 (l1)
| Reduce group=(#0)
| | agg min(#0)
%5 =
| Get %4 (l2)
| Project (#0)
| Negate
%6 =
| Union %5 %0
| Map null
%7 = Let l3 =
| Union %4 %6
%8 = Let l4 =
| Get %3 (l1)
| Reduce group=(#0)
| | agg max(#0)
%9 =
| Get %8 (l4)
| Project (#0)
| Negate
%10 =
| Union %9 %0
| Map null
%11 = Let l5 =
| Union %8 %10
%12 =
| Get materialize.public.t2 (u3)
| ArrangeBy (#0)
%13 =
| Get %7 (l3)
| Project (#0)
| Negate
%14 =
| Union %13 %0
| Map null
%15 =
| Union %7 %14
| ArrangeBy (#0)
%16 =
| Get %11 (l5)
| Project (#0)
| Negate
%17 =
| Union %16 %0
| Map null
%18 =
| Union %11 %17
%19 =
| Join %12 %15 %18 (= #0 #1 #3)
| | implementation = Differential %18 %12.(#0) %15.(#0)
| Project (#2, #4)
EOF
query II
SELECT (SELECT MIN(f1) FROM t1 WHERE t1.f1 = t2.f1) , (SELECT MAX(f1) FROM t1 WHERE t1.f1 = t2.f1) FROM t2
----
1 1
2 2
3 3
#
# Nested
#
query T multiline
EXPLAIN SELECT (SELECT (SELECT * FROM t1 WHERE t1.f1 = t2.f1) FROM t2 WHERE t2.f1 = t3.f1) FROM t3
----
%0 = Let l0 =
| Get materialize.public.t3 (u5)
| Distinct group=(#0)
%1 =
| Get %0 (l0)
| ArrangeBy (#0)
%2 =
| Get materialize.public.t2 (u3)
| ArrangeBy (#0)
%3 = Let l1 =
| Join %1 %2 (= #0 #1)
| | implementation = DeltaQuery
| | delta %1 %2.(#0)
| | delta %2 %1.(#0)
| Filter !(isnull(#0))
| Project (#0)
%4 = Let l2 =
| Get %3 (l1)
| Distinct group=(#0)
%5 =
| Get %4 (l2)
| ArrangeBy (#0)
%6 =
| Get materialize.public.t1 (u1)
| ArrangeBy (#0)
%7 = Let l3 =
| Join %5 %6 (= #0 #1)
| | implementation = DeltaQuery
| | delta %5 %6.(#0)
| | delta %6 %5.(#0)
| Project (#0)
%8 =
| Get %7 (l3)
| Project (#0, #0)
%9 =
| Get %7 (l3)
| Reduce group=(#0)
| | agg count(true)
| Filter (#1 > 1)
| Project (#0)
| Map (err: more than one record produced in subquery)
%10 = Let l4 =
| Union %8 %9
%11 =
| Get %3 (l1)
| ArrangeBy (#0)
%12 =
| Get %10 (l4)
| Project (#0)
| Distinct group=(#0)
| Negate
%13 =
| Union %12 %4
| Map null
%14 =
| Union %10 %13
%15 = Let l5 =
| Join %11 %14 (= #0 #1)
| | implementation = Differential %14 %11.(#0)
| Project (#0, #2)
%16 =
| Get %15 (l5)
| Project (#0)
| Reduce group=(#0)
| | agg count(true)
| Filter (#1 > 1)
| Project (#0)
| Map (err: more than one record produced in subquery)
%17 = Let l6 =
| Union %15 %16
%18 =
| Get materialize.public.t3 (u5)
| ArrangeBy (#0)
%19 =
| Get %17 (l6)
| Project (#0)
| Distinct group=(#0)
| Negate
%20 =
| Union %19 %0
| Map null
%21 =
| Union %17 %20
%22 =
| Join %18 %21 (= #0 #1)
| | implementation = Differential %21 %18.(#0)
| Project (#2)
EOF
query I
SELECT (SELECT (SELECT * FROM t1 WHERE t1.f1 = t2.f1) FROM t2 WHERE t2.f1 = t3.f1) FROM t3
----
1
2
3
#
# Inside an aggregate
#
query T multiline
EXPLAIN SELECT MIN((SELECT f1 FROM t1 WHERE t1.f1 = t2.f1)), MAX((SELECT f1 FROM t1 WHERE t1.f1 = t2.f1)) FROM t2;
----
%0 = Let l0 =
| Get materialize.public.t2 (u3)
| Distinct group=(#0)
%1 = Let l1 =
| Get materialize.public.t1 (u1)
| ArrangeBy (#0)
%2 =
| Get %0 (l0)
| ArrangeBy (#0)
%3 = Let l2 =
| Join %2 %1 (= #0 #1)
| | implementation = DeltaQuery
| | delta %2 %1.(#0)
| | delta %1 %2.(#0)
| Filter !(isnull(#0))
| Project (#0)
%4 =
| Get %3 (l2)
| Project (#0, #0)
%5 =
| Get %3 (l2)
| Reduce group=(#0)
| | agg count(true)
| Filter (#1 > 1)
| Project (#0)
| Map (err: more than one record produced in subquery)
%6 = Let l3 =
| Union %4 %5
%7 =
| Get materialize.public.t2 (u3)
| ArrangeBy (#0)
%8 =
| Get %6 (l3)
| Project (#0)
| Distinct group=(#0)
| Negate
%9 =
| Union %8 %0
| Map null
%10 =
| Union %6 %9
%11 = Let l4 =
| Join %7 %10 (= #0 #1)
| | implementation = Differential %10 %7.(#0)
| Project (#0, #2)
%12 = Let l5 =
| Get %11 (l4)
| Project (#0)
| Distinct group=(#0)
%13 =
| Get %12 (l5)
| ArrangeBy (#0)
%14 = Let l6 =
| Join %13 %1 (= #0 #1)
| | implementation = DeltaQuery
| | delta %13 %1.(#0)
| | delta %1 %13.(#0)
| Filter !(isnull(#0))
| Project (#0)
%15 =
| Get %14 (l6)
| Project (#0, #0)
%16 =
| Get %14 (l6)
| Reduce group=(#0)
| | agg count(true)
| Filter (#1 > 1)
| Project (#0)
| Map (err: more than one record produced in subquery)
%17 = Let l7 =
| Union %15 %16
%18 =
| Get %11 (l4)
| ArrangeBy (#0)
%19 =
| Get %17 (l7)
| Project (#0)
| Distinct group=(#0)
| Negate
%20 =
| Union %19 %12
| Map null
%21 =
| Union %17 %20
%22 = Let l8 =
| Join %18 %21 (= #0 #2)
| | implementation = Differential %21 %18.(#0)
| Project (#1, #3)
| Reduce group=()
| | agg min(#0)
| | agg max(#1)
%23 =
| Get %22 (l8)
| Project ()
| Negate
%24 =
| Constant ()
%25 =
| Union %23 %24
| Map null, null
%26 =
| Union %22 %25
EOF
query II
SELECT MIN((SELECT f1 FROM t1 WHERE t1.f1 = t2.f1)), MAX((SELECT f1 FROM t1 WHERE t1.f1 = t2.f1)) FROM t2;
----
1 3
#
# Join on the inside
#
query T multiline
EXPLAIN SELECT
(SELECT t1.f1 FROM t1, t2 WHERE t1.f1 = t3.f1 AND t2.f1 = t3.f1),
(SELECT t1.f1 FROM t1, t2 WHERE t1.f1 = t3.f1 AND t2.f1 = t3.f1)
FROM t3
----
%0 = Let l0 =
| Get materialize.public.t3 (u5)
| Distinct group=(#0)
%1 =
| Get %0 (l0)
| ArrangeBy (#0)
%2 =
| Get materialize.public.t1 (u1)
| ArrangeBy (#0)
%3 =
| Get materialize.public.t2 (u3)
| ArrangeBy (#0)
%4 = Let l1 =
| Join %1 %2 %3 (= #0 #1 #2)
| | implementation = DeltaQuery
| | delta %1 %2.(#0) %3.(#0)
| | delta %2 %1.(#0) %3.(#0)
| | delta %3 %1.(#0) %2.(#0)
| Filter !(isnull(#0))
| Project (#0)
%5 =
| Get %4 (l1)
| Project (#0, #0)
%6 =
| Get %4 (l1)
| Reduce group=(#0)
| | agg count(true)
| Filter (#1 > 1)
| Project (#0)
| Map (err: more than one record produced in subquery)
%7 = Let l2 =
| Union %5 %6
%8 =
| Get materialize.public.t3 (u5)
| ArrangeBy (#0)
%9 =
| Get %7 (l2)
| Project (#0)
| Distinct group=(#0)
| Negate
%10 =
| Union %9 %0
| Map null
%11 =
| Union %7 %10
%12 =
| Join %8 %11 (= #0 #1)
| | implementation = Differential %11 %8.(#0)
| Project (#2, #2)
EOF
query II
SELECT
(SELECT t1.f1 FROM t1, t2 WHERE t1.f1 = t3.f1 AND t2.f1 = t3.f1),
(SELECT t1.f1 FROM t1, t2 WHERE t1.f1 = t3.f1 AND t2.f1 = t3.f1)
FROM t3
----
1 1
2 2
3 3
#
# Join on the outside
#
query T multiline
EXPLAIN SELECT
(SELECT * FROM t1 WHERE t1.f1 = t2.f1 AND t1.f1 = t3.f1),
(SELECT * FROM t1 WHERE t1.f1 = t2.f1 AND t1.f1 = t3.f1)
FROM t2, t3
----
%0 =
| Get materialize.public.t2 (u3)
| ArrangeBy ()
%1 =
| Get materialize.public.t3 (u5)
%2 = Let l0 =
| Join %0 %1
| | implementation = Differential %1 %0.()
%3 = Let l1 =
| Get %2 (l0)
| Distinct group=(#0, #1)
%4 =
| Get %3 (l1)
| Filter (#0 = #1)
%5 =
| Get materialize.public.t1 (u1)
| ArrangeBy (#0)
%6 = Let l2 =
| Join %4 %5 (= #0 #2)
| | implementation = Differential %4 %5.(#0)
| Filter !(isnull(#0))
| Project (#0, #1)
%7 =
| Get %6 (l2)
| Project (#0, #1, #0)
%8 =
| Get %6 (l2)
| Reduce group=(#0, #1)
| | agg count(true)
| Filter (#2 > 1)
| Project (#0, #1)
| Map (err: more than one record produced in subquery)
%9 = Let l3 =
| Union %7 %8
%10 =
| Get %2 (l0)
| ArrangeBy (#0, #1)
%11 =
| Get %9 (l3)
| Project (#0, #1)
| Distinct group=(#0, #1)
| Negate
%12 =
| Union %11 %3
| Map null
%13 =
| Union %9 %12
%14 =
| Join %10 %13 (= #0 #2) (= #1 #3)
| | implementation = Differential %13 %10.(#0, #1)
| Project (#4, #4)
EOF
query II
SELECT
(SELECT * FROM t1 WHERE t1.f1 = t2.f1 AND t1.f1 = t3.f1),
(SELECT * FROM t1 WHERE t1.f1 = t2.f1 AND t1.f1 = t3.f1)
FROM t2, t3
----
NULL NULL
NULL NULL
NULL NULL
NULL NULL
NULL NULL
NULL NULL
1 1
2 2
3 3
query T multiline
EXPLAIN TYPED RAW PLAN FOR SELECT CASE (SELECT 1) WHEN 1 THEN 0 ELSE 2 END, 'TEXT';
----
%0 =
| Constant ()
| | types = ()
| | keys = ()
| Map if (select(%1) = 1) then {0} els {2}, "TEXT"
| | types = (integer, text)
| | keys = ()
| |
| | %1 =
| | | Constant ()
| | | | types = ()
| | | | keys = ()
| | | Map 1
| | | | types = (integer)
| | | | keys = ()
| |
EOF
query T multiline
EXPLAIN TYPED DECORRELATED PLAN FOR SELECT CASE (SELECT 1) WHEN 1 THEN 0 ELSE 2 END, 'TEXT';