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#pragma once
#include <Parsers/IParserBase.h>
namespace DB
{
/** Sampling factor of the form 0.1 or 1/10.
* It is parsed as a rational number without conversion to IEEE-754.
*/
class ParserSampleRatio : public IParserBase
{
protected:
const char * getName() const override { return "Sample ratio or offset"; }
bool parseImpl(Pos & pos, ASTPtr & node, Expected & expected) override;
};
}
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