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38 lines
715 B
C++
38 lines
715 B
C++
#pragma once
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#include <Parsers/ASTQueryWithOutput.h>
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namespace DB
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{
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/** Single SELECT query or multiple SELECT queries with UNION
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* or UNION or UNION DISTINCT
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*/
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class ASTSelectWithUnionQuery : public ASTQueryWithOutput
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{
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public:
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String getID(char) const override { return "SelectWithUnionQuery"; }
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ASTPtr clone() const override;
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void formatQueryImpl(const FormatSettings & settings, FormatState & state, FormatStateStacked frame) const override;
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enum class Mode
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{
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Unspecified,
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ALL,
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DISTINCT
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};
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using UnionModes = std::vector<Mode>;
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Mode union_mode;
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UnionModes list_of_modes;
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bool is_normalized = false;
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ASTPtr list_of_selects;
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};
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}
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