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23 lines
645 B
C++
23 lines
645 B
C++
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#pragma once
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#include <Parsers/IAST.h>
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#include <Interpreters/InDepthNodeVisitor.h>
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namespace DB
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{
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/// It converts some arithmetic. Optimization due to the linearity property of some aggregate functions.
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/// Function collects const and not const nodes and rebuilds old tree.
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class ArithmeticOperationsInAgrFuncMatcher
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{
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public:
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struct Data {};
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static void visit(const ASTPtr & ast, Data data);
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static void visit(ASTFunction *, Data data);
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static bool needChildVisit(const ASTPtr & node, const ASTPtr & child);
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};
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using ArithmeticOperationsInAgrFuncVisitor = InDepthNodeVisitor<ArithmeticOperationsInAgrFuncMatcher, true>;
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}
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