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30 lines
767 B
C++
30 lines
767 B
C++
#pragma once
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#include <Core/Types.h>
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namespace DB
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{
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/// Up to what stage the SELECT query is executed or needs to be executed.
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namespace QueryProcessingStage
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{
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/// Numbers matter - the later stage has a larger number.
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enum Enum
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{
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FetchColumns = 0, /// Only read/have been read the columns specified in the query.
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WithMergeableState = 1, /// Until the stage where the results of processing on different servers can be combined.
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Complete = 2, /// Completely.
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};
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inline const char * toString(UInt64 stage)
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{
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static const char * data[] = { "FetchColumns", "WithMergeableState", "Complete" };
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return stage < 3
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? data[stage]
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: "Unknown stage";
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}
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}
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}
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