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Merge pull request MaterializeInc#3765 from benesch/topk-idiom
test: add plan + test for idiomatic top-k-in-group query
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| # Copyright Materialize, Inc. 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. | ||
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| mode cockroach | ||
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| statement ok | ||
| CREATE TABLE cities ( | ||
| name text NOT NULL, | ||
| state text NOT NULL, | ||
| pop int NOT NULL | ||
| ) | ||
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| statement ok | ||
| INSERT INTO cities VALUES | ||
| ('Los_Angeles', 'CA', 3979576), | ||
| ('Phoenix', 'AZ', 1680992), | ||
| ('Houston', 'TX', 2320268), | ||
| ('San_Diego', 'CA', 1423851), | ||
| ('San_Francisco', 'CA', 881549), | ||
| ('New_York', 'NY', 8336817), | ||
| ('Dallas', 'TX', 1343573), | ||
| ('San_Antonio', 'TX', 1547253), | ||
| ('San_Jose', 'CA', 1021795), | ||
| ('Chicago', 'IL', 2695598), | ||
| ('Austin', 'TX', 978908) | ||
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| query TT rowsort | ||
| SELECT state, name FROM | ||
| (SELECT DISTINCT state FROM cities) grp, | ||
| LATERAL (SELECT name FROM cities WHERE state = grp.state ORDER BY pop DESC LIMIT 3) | ||
| ---- | ||
| AZ Phoenix | ||
| CA Los_Angeles | ||
| CA San_Diego | ||
| CA San_Jose | ||
| IL Chicago | ||
| NY New_York | ||
| TX Houston | ||
| TX San_Antonio | ||
| TX Dallas | ||
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| mode standard | ||
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| query T multiline | ||
| EXPLAIN PLAN FOR SELECT state, name FROM | ||
| (SELECT DISTINCT state FROM cities) grp, | ||
| LATERAL (SELECT name, pop FROM cities WHERE state = grp.state ORDER BY pop DESC LIMIT 3) | ||
| ---- | ||
| %0 = | ||
| | Get materialize.public.cities (u1) | ||
| | Distinct group=(#1) | ||
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| %1 = | ||
| | Get %0 | ||
| | ArrangeBy (#0) | ||
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| %2 = | ||
| | Get %0 | ||
| | ArrangeBy (#0) | ||
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| %3 = | ||
| | Get materialize.public.cities (u1) | ||
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| %4 = | ||
| | Join %2 %3 (= #0 #2) | ||
| | | implementation = Differential %3 %2.(#0) | ||
| | | demand = (#0, #1, #3) | ||
| | TopK group=(#0) order=(#3 desc) limit=3 offset=0 | ||
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| %5 = | ||
| | Join %1 %4 (= #0 #1) | ||
| | | implementation = Differential %4 %1.(#0) | ||
| | | demand = (#0, #2) | ||
| | Project (#0, #2) | ||
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| EOF |