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#pragma once
#include <Parsers/IAST.h>
namespace DB
{
class ASTFunction;
/** name BY expr TYPE typename(args) GRANULARITY int in create query
*/
class ASTIndexDeclaration : public IAST
{
public:
static const auto DEFAULT_INDEX_GRANULARITY = 1uz;
static const auto DEFAULT_ANNOY_INDEX_GRANULARITY = 100'000'000uz;
static const auto DEFAULT_USEARCH_INDEX_GRANULARITY = 100'000'000uz;
String name;
IAST * expr;
ASTFunction * type;
UInt64 granularity;
bool part_of_create_index_query = false;
/** Get the text that identifies this element. */
String getID(char) const override { return "Index"; }
ASTPtr clone() const override;
void formatImpl(const FormatSettings & s, FormatState & state, FormatStateStacked frame) const override;
void forEachPointerToChild(std::function<void(void**)> f) override
{
f(reinterpret_cast<void **>(&expr));
f(reinterpret_cast<void **>(&type));
}
};
}
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