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#pragma once
#include <unordered_set>
#include <Parsers/IAST.h>
#include <Interpreters/InDepthNodeVisitor.h>
#include <Parsers/ASTSelectIntersectExceptQuery.h>
#include <Core/SettingsEnums.h>
namespace DB
{
class ASTFunction;
class ASTSelectWithUnionQuery;
class SelectIntersectExceptQueryMatcher
{
public:
struct Data
{
const SetOperationMode intersect_default_mode;
const SetOperationMode except_default_mode;
};
static bool needChildVisit(const ASTPtr &, const ASTPtr &) { return true; }
static void visit(ASTPtr & ast, Data &);
static void visit(ASTSelectWithUnionQuery &, Data &);
};
/// Visit children first.
using SelectIntersectExceptQueryVisitor
= InDepthNodeVisitor<SelectIntersectExceptQueryMatcher, false>;
}
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