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#include <Common/IntervalKind.h>
#include <Common/Exception.h>
namespace DB
{
namespace ErrorCodes
{
extern const int SYNTAX_ERROR;
extern const int BAD_ARGUMENTS;
}
Int64 IntervalKind::toAvgNanoseconds() const
{
static constexpr Int64 NANOSECONDS_PER_MICROSECOND = 1000;
static constexpr auto NANOSECONDS_PER_MILLISECOND = NANOSECONDS_PER_MICROSECOND * 1000;
static constexpr auto NANOSECONDS_PER_SECOND = NANOSECONDS_PER_MILLISECOND * 1000;
switch (kind)
{
case IntervalKind::Millisecond:
return NANOSECONDS_PER_MILLISECOND;
case IntervalKind::Microsecond:
return NANOSECONDS_PER_MICROSECOND;
case IntervalKind::Nanosecond:
return 1;
default:
return toAvgSeconds() * NANOSECONDS_PER_SECOND;
}
UNREACHABLE();
}
Int32 IntervalKind::toAvgSeconds() const
{
switch (kind)
{
case IntervalKind::Nanosecond:
case IntervalKind::Microsecond:
case IntervalKind::Millisecond: return 0;
case IntervalKind::Second: return 1;
case IntervalKind::Minute: return 60;
case IntervalKind::Hour: return 3600;
case IntervalKind::Day: return 86400;
case IntervalKind::Week: return 604800;
case IntervalKind::Month: return 2629746; /// Exactly 1/12 of a year.
case IntervalKind::Quarter: return 7889238; /// Exactly 1/4 of a year.
case IntervalKind::Year: return 31556952; /// The average length of a Gregorian year is equal to 365.2425 days
}
UNREACHABLE();
}
Float64 IntervalKind::toSeconds() const
{
switch (kind)
{
case IntervalKind::Nanosecond:
return 0.000000001;
case IntervalKind::Microsecond:
return 0.000001;
case IntervalKind::Millisecond:
return 0.001;
case IntervalKind::Second:
return 1;
case IntervalKind::Minute:
return 60;
case IntervalKind::Hour:
return 3600;
case IntervalKind::Day:
return 86400;
case IntervalKind::Week:
return 604800;
default:
throw Exception(ErrorCodes::BAD_ARGUMENTS, "Not possible to get precise number of seconds in non-precise interval");
}
UNREACHABLE();
}
bool IntervalKind::isFixedLength() const
{
switch (kind)
{
case IntervalKind::Nanosecond:
case IntervalKind::Microsecond:
case IntervalKind::Millisecond:
case IntervalKind::Second:
case IntervalKind::Minute:
case IntervalKind::Hour:
case IntervalKind::Day:
case IntervalKind::Week: return true;
case IntervalKind::Month:
case IntervalKind::Quarter:
case IntervalKind::Year: return false;
}
UNREACHABLE();
}
IntervalKind IntervalKind::fromAvgSeconds(Int64 num_seconds)
{
if (num_seconds)
{
if (!(num_seconds % 31556952))
return IntervalKind::Year;
if (!(num_seconds % 7889238))
return IntervalKind::Quarter;
if (!(num_seconds % 2629746))
return IntervalKind::Month;
if (!(num_seconds % 604800))
return IntervalKind::Week;
if (!(num_seconds % 86400))
return IntervalKind::Day;
if (!(num_seconds % 3600))
return IntervalKind::Hour;
if (!(num_seconds % 60))
return IntervalKind::Minute;
}
return IntervalKind::Second;
}
const char * IntervalKind::toKeyword() const
{
switch (kind)
{
case IntervalKind::Nanosecond: return "NANOSECOND";
case IntervalKind::Microsecond: return "MICROSECOND";
case IntervalKind::Millisecond: return "MILLISECOND";
case IntervalKind::Second: return "SECOND";
case IntervalKind::Minute: return "MINUTE";
case IntervalKind::Hour: return "HOUR";
case IntervalKind::Day: return "DAY";
case IntervalKind::Week: return "WEEK";
case IntervalKind::Month: return "MONTH";
case IntervalKind::Quarter: return "QUARTER";
case IntervalKind::Year: return "YEAR";
}
UNREACHABLE();
}
const char * IntervalKind::toLowercasedKeyword() const
{
switch (kind)
{
case IntervalKind::Nanosecond: return "nanosecond";
case IntervalKind::Microsecond: return "microsecond";
case IntervalKind::Millisecond: return "millisecond";
case IntervalKind::Second: return "second";
case IntervalKind::Minute: return "minute";
case IntervalKind::Hour: return "hour";
case IntervalKind::Day: return "day";
case IntervalKind::Week: return "week";
case IntervalKind::Month: return "month";
case IntervalKind::Quarter: return "quarter";
case IntervalKind::Year: return "year";
}
UNREACHABLE();
}
const char * IntervalKind::toDateDiffUnit() const
{
switch (kind)
{
case IntervalKind::Nanosecond:
return "nanosecond";
case IntervalKind::Microsecond:
return "microsecond";
case IntervalKind::Millisecond:
return "millisecond";
case IntervalKind::Second:
return "second";
case IntervalKind::Minute:
return "minute";
case IntervalKind::Hour:
return "hour";
case IntervalKind::Day:
return "day";
case IntervalKind::Week:
return "week";
case IntervalKind::Month:
return "month";
case IntervalKind::Quarter:
return "quarter";
case IntervalKind::Year:
return "year";
}
UNREACHABLE();
}
const char * IntervalKind::toNameOfFunctionToIntervalDataType() const
{
switch (kind)
{
case IntervalKind::Nanosecond:
return "toIntervalNanosecond";
case IntervalKind::Microsecond:
return "toIntervalMicrosecond";
case IntervalKind::Millisecond:
return "toIntervalMillisecond";
case IntervalKind::Second:
return "toIntervalSecond";
case IntervalKind::Minute:
return "toIntervalMinute";
case IntervalKind::Hour:
return "toIntervalHour";
case IntervalKind::Day:
return "toIntervalDay";
case IntervalKind::Week:
return "toIntervalWeek";
case IntervalKind::Month:
return "toIntervalMonth";
case IntervalKind::Quarter:
return "toIntervalQuarter";
case IntervalKind::Year:
return "toIntervalYear";
}
UNREACHABLE();
}
const char * IntervalKind::toNameOfFunctionExtractTimePart() const
{
switch (kind)
{
case IntervalKind::Nanosecond:
return "toNanosecond";
case IntervalKind::Microsecond:
return "toMicrosecond";
case IntervalKind::Millisecond:
return "toMillisecond";
case IntervalKind::Second:
return "toSecond";
case IntervalKind::Minute:
return "toMinute";
case IntervalKind::Hour:
return "toHour";
case IntervalKind::Day:
return "toDayOfMonth";
case IntervalKind::Week:
// TODO: SELECT toRelativeWeekNum(toDate('2017-06-15')) - toRelativeWeekNum(toStartOfYear(toDate('2017-06-15')))
// else if (ParserKeyword("WEEK").ignore(pos, expected))
// function_name = "toRelativeWeekNum";
throw Exception(ErrorCodes::SYNTAX_ERROR, "The syntax 'EXTRACT(WEEK FROM date)' is not supported, cannot extract the number of a week");
case IntervalKind::Month:
return "toMonth";
case IntervalKind::Quarter:
return "toQuarter";
case IntervalKind::Year:
return "toYear";
}
UNREACHABLE();
}
bool IntervalKind::tryParseString(const std::string & kind, IntervalKind::Kind & result)
{
if ("nanosecond" == kind)
{
result = IntervalKind::Nanosecond;
return true;
}
if ("microsecond" == kind)
{
result = IntervalKind::Microsecond;
return true;
}
if ("millisecond" == kind)
{
result = IntervalKind::Millisecond;
return true;
}
if ("second" == kind)
{
result = IntervalKind::Second;
return true;
}
if ("minute" == kind)
{
result = IntervalKind::Minute;
return true;
}
if ("hour" == kind)
{
result = IntervalKind::Hour;
return true;
}
if ("day" == kind)
{
result = IntervalKind::Day;
return true;
}
if ("week" == kind)
{
result = IntervalKind::Week;
return true;
}
if ("month" == kind)
{
result = IntervalKind::Month;
return true;
}
if ("quarter" == kind)
{
result = IntervalKind::Quarter;
return true;
}
if ("year" == kind)
{
result = IntervalKind::Year;
return true;
}
return false;
}
}
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