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29 lines
671 B
C++
29 lines
671 B
C++
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#pragma once
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#include <Interpreters/InDepthNodeVisitor.h>
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#include <Interpreters/Aliases.h>
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namespace DB
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{
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class ASTSelectQuery;
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struct TableWithColumnNamesAndTypes;
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/** Replaces tuple comparisons with multiple comparisons.
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*
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* Example: SELECT id FROM test_table WHERE (id, value) = (1, 'Value');
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* Result: SELECT id FROM test_table WHERE id = 1 AND value = 'Value';
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*/
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class ComparisonTupleEliminationMatcher
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{
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public:
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struct Data {};
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static bool needChildVisit(ASTPtr &, const ASTPtr &);
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static void visit(ASTPtr & ast, Data & data);
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};
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using ComparisonTupleEliminationVisitor = InDepthNodeVisitor<ComparisonTupleEliminationMatcher, true>;
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}
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