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26 lines
575 B
C++
26 lines
575 B
C++
#pragma once
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#include <DB/Core/Block.h>
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#include <DB/Core/ColumnNumbers.h>
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namespace DB
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{
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namespace Conditional
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{
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class NullMapBuilder;
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class StringArrayEvaluator
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{
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public:
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/// The tracker parameter is an index to a column that tracks the originating column of each value of
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/// the result column. Calling this function with result == tracker means that no such tracking is
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/// required, which happens if multiIf is called with no nullable parameters.
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static bool perform(Block & block, const ColumnNumbers & args, size_t result, NullMapBuilder & builder);
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};
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}
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}
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