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Handle empty expression list in cross join

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vdimir 2022-04-07 11:32:32 +00:00
parent 69160fa3e3
commit eb7ac4c3a6
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3 changed files with 62 additions and 0 deletions
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4
src/Interpreters/JoinToSubqueryTransformVisitor.cpp
View File

@ -377,7 +377,11 @@ private:
static void visit(ASTSelectQuery & select, ASTPtr &, Data & data)
{
if (!data.done)
{
if (data.expression_list->children.empty())
data.expression_list->children.emplace_back(std::make_shared<ASTAsterisk>());
select.setExpression(ASTSelectQuery::Expression::SELECT, std::move(data.expression_list));
}
data.done = true;
}
};

52
tests/queries/0_stateless/02265_cross_join_empty_list.reference Normal file
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@ -0,0 +1,52 @@
24
24
24
24 24 24
0 0 0
0 0 1
0 0 2
0 0 3
0 1 0
0 1 1
0 1 2
0 1 3
0 2 0
0 2 1
0 2 2
0 2 3
1 0 0
1 0 1
1 0 2
1 0 3
1 1 0
1 1 1
1 1 2
1 1 3
1 2 0
1 2 1
1 2 2
1 2 3
0 0 0
0 0 1
0 0 2
0 0 3
0 1 0
0 1 1
0 1 2
0 1 3
0 2 0
0 2 1
0 2 2
0 2 3
1 0 0
1 0 1
1 0 2
1 0 3
1 1 0
1 1 1
1 1 2
1 1 3
1 2 0
1 2 1
1 2 2
1 2 3

6
tests/queries/0_stateless/02265_cross_join_empty_list.sql Normal file
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@ -0,0 +1,6 @@
SELECT count(1) FROM numbers(2) AS n1, numbers(3) AS n2, numbers(4) AS n3;
SELECT count(*) FROM numbers(2) AS n1, numbers(3) AS n2, numbers(4) AS n3;
SELECT count() FROM numbers(2) AS n1, numbers(3) AS n2, numbers(4) AS n3;
SELECT count(n1.number), count(n2.number), count(n3.number) FROM numbers(2) AS n1, numbers(3) AS n2, numbers(4) AS n3;
SELECT * FROM numbers(2) AS n1, numbers(3) AS n2, numbers(4) AS n3 ORDER BY n1.number, n2.number, n3.number;
SELECT n1.number, n2.number, n3.number FROM numbers(2) AS n1, numbers(3) AS n2, numbers(4) AS n3 ORDER BY n1.number, n2.number, n3.number;