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Merge pull request #26118 from vdimir/issue-25993-join-get-lc

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Do not use default impl for low cardinality for joinGet
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Maksim Kita 2021-07-09 23:45:55 +03:00 committed by GitHub
commit f48c5af90c
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3 changed files with 17 additions and 7 deletions
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2
src/Functions/FunctionJoinGet.h
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@ -28,7 +28,7 @@ public:
static constexpr auto name = or_null ? "joinGetOrNull" : "joinGet";
bool useDefaultImplementationForNulls() const override { return false; }
bool useDefaultImplementationForLowCardinalityColumns() const override { return true; }
bool useDefaultImplementationForLowCardinalityColumns() const override { return false; }
bool useDefaultImplementationForConstants() const override { return true; }
ColumnPtr executeImpl(const ColumnsWithTypeAndName & arguments, const DataTypePtr &, size_t input_rows_count) const override;

7
tests/queries/0_stateless/01735_join_get_low_card_fix.reference
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@ -1 +1,6 @@
yyy
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15
tests/queries/0_stateless/01735_join_get_low_card_fix.sql
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@ -1,9 +1,14 @@
drop table if exists join_tbl;
DROP TABLE IF EXISTS join_tbl;
create table join_tbl (`id` String, `name` String) engine Join(any, left, id);
CREATE TABLE join_tbl (`id` String, `name` String, lcname LowCardinality(String)) ENGINE = Join(any, left, id);
insert into join_tbl values ('xxx', 'yyy');
INSERT INTO join_tbl VALUES ('xxx', 'yyy', 'yyy');
select joinGet('join_tbl', 'name', toLowCardinality('xxx'));
SELECT joinGet('join_tbl', 'name', 'xxx') == 'yyy';
SELECT joinGet('join_tbl', 'name', toLowCardinality('xxx')) == 'yyy';
SELECT joinGet('join_tbl', 'name', toLowCardinality(materialize('xxx'))) == 'yyy';
SELECT joinGet('join_tbl', 'lcname', 'xxx') == 'yyy';
SELECT joinGet('join_tbl', 'lcname', toLowCardinality('xxx')) == 'yyy';
SELECT joinGet('join_tbl', 'lcname', toLowCardinality(materialize('xxx'))) == 'yyy';
drop table if exists join_tbl;
DROP TABLE IF EXISTS join_tbl;