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Added support for Nullable types in higher order functions [#CLICKHOUSE-4].

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This commit is contained in:
Alexey Milovidov 2017-04-19 06:35:11 +03:00
parent 3af2bade1b
commit ed3c0125cd
3 changed files with 18 additions and 0 deletions
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7
dbms/src/Functions/FunctionsMiscellaneous.h
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@ -11,6 +11,7 @@
namespace DB namespace DB
{ {
class FunctionTuple : public IFunction class FunctionTuple : public IFunction
{ {
public: public:
@ -67,8 +68,14 @@ public:
return 2; return 2;
} }
bool hasSpecialSupportForNulls() const override
{
return true;
}
DataTypePtr getReturnTypeImpl(const DataTypes & arguments) const override; DataTypePtr getReturnTypeImpl(const DataTypes & arguments) const override;
void executeImpl(Block & block, const ColumnNumbers & arguments, size_t result) override; void executeImpl(Block & block, const ColumnNumbers & arguments, size_t result) override;
}; };
} }

10
dbms/tests/queries/0_stateless/00450_higher_order_and_nullable.reference Normal file
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@ -0,0 +1,10 @@
[]
[NULL]
[NULL,1]
[NULL,1,NULL]
[NULL,1,NULL,3]
[NULL,1,NULL,3,NULL]
[NULL,1,NULL,3,NULL,5]
[NULL,1,NULL,3,NULL,5,NULL]
[NULL,1,NULL,3,NULL,5,NULL,7]
[NULL,1,NULL,3,NULL,5,NULL,7,NULL]

1
dbms/tests/queries/0_stateless/00450_higher_order_and_nullable.sql Normal file
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@ -0,0 +1 @@
SELECT arrayMap(x -> x % 2 = 0 ? NULL : x, range(number)) FROM system.numbers LIMIT 10;