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support nullable arguments in function initializeAggregation

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This commit is contained in:
Anton Popov 2021-10-14 15:07:50 +03:00
parent 5802037f1e
commit 4d020c96e0
3 changed files with 15 additions and 0 deletions
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1
src/Functions/initializeAggregation.cpp
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@ -40,6 +40,7 @@ public:
bool isSuitableForShortCircuitArgumentsExecution(const DataTypesWithConstInfo & /*arguments*/) const override { return true; }
bool useDefaultImplementationForConstants() const override { return true; }
bool useDefaultImplementationForNulls() const override { return false; }
ColumnNumbers getArgumentsThatAreAlwaysConstant() const override { return {0}; }
DataTypePtr getReturnTypeImpl(const ColumnsWithTypeAndName & arguments) const override;

6
tests/queries/0_stateless/02097_initializeAggregationNullable.reference Normal file
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@ -0,0 +1,6 @@
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AggregateFunction(uniqExact, Nullable(String))
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AggregateFunction(uniqExact, Nullable(UInt8))
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tests/queries/0_stateless/02097_initializeAggregationNullable.sql Normal file
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@ -0,0 +1,8 @@
SELECT finalizeAggregation(initializeAggregation('uniqExactState', toNullable('foo')));
SELECT toTypeName(initializeAggregation('uniqExactState', toNullable('foo')));
SELECT finalizeAggregation(initializeAggregation('uniqExactState', toNullable(123)));
SELECT toTypeName(initializeAggregation('uniqExactState', toNullable(123)));
SELECT initializeAggregation('uniqExactState', toNullable('foo')) = arrayReduce('uniqExactState', [toNullable('foo')]);
SELECT initializeAggregation('uniqExactState', toNullable(123)) = arrayReduce('uniqExactState', [toNullable(123)]);