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提交 eae51e9e authored 作者: Evgenij Ryazanov's avatar Evgenij Ryazanov
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Implement casts between INTERVAL types

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h2/src/main/org/h2/util/DateTimeUtils.java
浏览文件 @ eae51e9e
......@@ -6,14 +6,17 @@
*/
package org.h2.util;
import java.math.BigInteger;
import java.sql.Date;
import java.sql.Time;
import java.sql.Timestamp;
import java.util.Calendar;
import java.util.GregorianCalendar;
import java.util.TimeZone;
import org.h2.api.ErrorCode;
import org.h2.api.IntervalQualifier;
import org.h2.engine.Mode;
import org.h2.message.DbException;
import org.h2.value.Value;
import org.h2.value.ValueDate;
import org.h2.value.ValueInterval;
......@@ -1746,4 +1749,112 @@ public class DateTimeUtils {
return nanosOfDay - mod;
}
/**
* Converts interval value to an absolute value.
*
* @param interval the interval value
* @return absolute value in months for year-month intervals,
* in nanoseconds for day-time intervals
*/
public static BigInteger intervalToAbsolute(ValueInterval interval) {
switch (interval.getQualifier()) {
case YEAR:
return BigInteger.valueOf(interval.getLeading()).multiply(BigInteger.valueOf(12));
case MONTH:
return BigInteger.valueOf(interval.getLeading());
case DAY:
return BigInteger.valueOf(interval.getLeading()).multiply(BigInteger.valueOf(NANOS_PER_DAY));
case HOUR:
return BigInteger.valueOf(interval.getLeading()).multiply(BigInteger.valueOf(3_600_000_000_000L));
case MINUTE:
return BigInteger.valueOf(interval.getLeading()).multiply(BigInteger.valueOf(60_000_000_000L));
case SECOND:
return intervalToAbsolute(interval, 1_000_000_000);
case YEAR_TO_MONTH:
return intervalToAbsolute(interval, 12);
case DAY_TO_HOUR:
return intervalToAbsolute(interval, 24, 3_600_000_000_000L);
case DAY_TO_MINUTE:
return intervalToAbsolute(interval, 24 * 60, 60_000_000_000L);
case DAY_TO_SECOND:
return intervalToAbsolute(interval, NANOS_PER_DAY);
case HOUR_TO_MINUTE:
return intervalToAbsolute(interval, 60, 60_000_000_000L);
case HOUR_TO_SECOND:
return intervalToAbsolute(interval, 3_600_000_000_000L);
case MINUTE_TO_SECOND:
return intervalToAbsolute(interval, 60_000_000_000L);
default:
throw new IllegalArgumentException();
}
}
private static BigInteger intervalToAbsolute(ValueInterval interval, long multiplier, long totalMultiplier) {
return intervalToAbsolute(interval, multiplier).multiply(BigInteger.valueOf(totalMultiplier));
}
private static BigInteger intervalToAbsolute(ValueInterval interval, long multiplier) {
long leading = interval.getLeading(), remaining = interval.getRemaining();
if (leading < 0) {
remaining = -remaining;
}
return BigInteger.valueOf(leading).multiply(BigInteger.valueOf(multiplier)).add(BigInteger.valueOf(remaining));
}
/**
* Converts absolute value to an interval value.
*
* @param qualifier the qualifier of interval
* @param absolute absolute value in months for year-month intervals,
* in nanoseconds for day-time intervals
* @return the interval value
*/
public static ValueInterval intervalFromAbsolute(IntervalQualifier qualifier, BigInteger absolute) {
switch (qualifier) {
case YEAR:
return ValueInterval.from(qualifier, absolute.divide(BigInteger.valueOf(12)).longValue(), 0);
case MONTH:
return ValueInterval.from(qualifier, leadingExact(absolute), 0);
case DAY:
return ValueInterval.from(qualifier, leadingExact(absolute.divide(BigInteger.valueOf(NANOS_PER_DAY))), 0);
case HOUR:
return ValueInterval.from(qualifier, leadingExact(absolute.divide(BigInteger.valueOf(3_600_000_000_000L))),
0);
case MINUTE:
return ValueInterval.from(qualifier, leadingExact(absolute.divide(BigInteger.valueOf(60_000_000_000L))),
0);
case SECOND:
return intervalFromAbsolute(qualifier, absolute, 1_000_000_000);
case YEAR_TO_MONTH:
return intervalFromAbsolute(qualifier, absolute, 12);
case DAY_TO_HOUR:
return intervalFromAbsolute(qualifier, absolute.divide(BigInteger.valueOf(3_600_000_000_000L)), 24);
case DAY_TO_MINUTE:
return intervalFromAbsolute(qualifier, absolute.divide(BigInteger.valueOf(60_000_000_000L)), 24 * 60);
case DAY_TO_SECOND:
return intervalFromAbsolute(qualifier, absolute, NANOS_PER_DAY);
case HOUR_TO_MINUTE:
return intervalFromAbsolute(qualifier, absolute.divide(BigInteger.valueOf(60_000_000_000L)), 60);
case HOUR_TO_SECOND:
return intervalFromAbsolute(qualifier, absolute, 3_600_000_000_000L);
case MINUTE_TO_SECOND:
return intervalFromAbsolute(qualifier, absolute, 60_000_000_000L);
default:
throw new IllegalArgumentException();
}
}
private static ValueInterval intervalFromAbsolute(IntervalQualifier qualifier, BigInteger absolute, long divisor) {
BigInteger[] dr = absolute.divideAndRemainder(BigInteger.valueOf(divisor));
return ValueInterval.from(qualifier, leadingExact(dr[0]), Math.abs(dr[1].longValue()));
}
private static long leadingExact(BigInteger absolute) {
if (absolute.compareTo(BigInteger.valueOf(999_999_999_999_999_999L)) > 0
|| absolute.compareTo(BigInteger.valueOf(-999_999_999_999_999_999L)) < 0) {
throw DbException.get(ErrorCode.NUMERIC_VALUE_OUT_OF_RANGE_1, absolute.toString());
}
return absolute.longValue();
}
}
h2/src/main/org/h2/value/Value.java
浏览文件 @ eae51e9e
......@@ -20,6 +20,7 @@ import java.sql.Time;
import java.sql.Timestamp;
import java.sql.Types;
import org.h2.api.ErrorCode;
import org.h2.api.IntervalQualifier;
import org.h2.engine.Mode;
import org.h2.engine.SysProperties;
import org.h2.message.DbException;
......@@ -1148,6 +1149,44 @@ public abstract class Value {
}
break;
}
case Value.INTERVAL_YEAR:
case Value.INTERVAL_MONTH:
case Value.INTERVAL_YEAR_TO_MONTH:
switch (getType()) {
case Value.INTERVAL_YEAR:
case Value.INTERVAL_MONTH:
case Value.INTERVAL_YEAR_TO_MONTH:
return DateTimeUtils.intervalFromAbsolute(
IntervalQualifier.valueOf(targetType - Value.INTERVAL_YEAR),
DateTimeUtils.intervalToAbsolute((ValueInterval) this));
}
break;
case Value.INTERVAL_DAY:
case Value.INTERVAL_HOUR:
case Value.INTERVAL_MINUTE:
case Value.INTERVAL_SECOND:
case Value.INTERVAL_DAY_TO_HOUR:
case Value.INTERVAL_DAY_TO_MINUTE:
case Value.INTERVAL_DAY_TO_SECOND:
case Value.INTERVAL_HOUR_TO_MINUTE:
case Value.INTERVAL_HOUR_TO_SECOND:
case Value.INTERVAL_MINUTE_TO_SECOND:
switch (getType()) {
case Value.INTERVAL_DAY:
case Value.INTERVAL_HOUR:
case Value.INTERVAL_MINUTE:
case Value.INTERVAL_SECOND:
case Value.INTERVAL_DAY_TO_HOUR:
case Value.INTERVAL_DAY_TO_MINUTE:
case Value.INTERVAL_DAY_TO_SECOND:
case Value.INTERVAL_HOUR_TO_MINUTE:
case Value.INTERVAL_HOUR_TO_SECOND:
case Value.INTERVAL_MINUTE_TO_SECOND:
return DateTimeUtils.intervalFromAbsolute(
IntervalQualifier.valueOf(targetType - Value.INTERVAL_YEAR),
DateTimeUtils.intervalToAbsolute((ValueInterval) this));
}
break;
}
// conversion by parsing the string value
String s = getString();
......
h2/src/test/org/h2/test/scripts/datatypes/interval.sql
浏览文件 @ eae51e9e
......@@ -117,3 +117,318 @@ SELECT J11, J12, J12 FROM TEST ORDER BY ID;
DROP TABLE TEST;
> ok
-- Year-month casts
SELECT CAST(INTERVAL '-10' YEAR AS INTERVAL MONTH);
>> INTERVAL '-120' MONTH
SELECT CAST(INTERVAL '-10' YEAR AS INTERVAL YEAR TO MONTH);
>> INTERVAL '-10-0' YEAR TO MONTH
SELECT CAST(INTERVAL '-20' MONTH AS INTERVAL YEAR);
>> INTERVAL '-1' YEAR
SELECT CAST(INTERVAL '-20' MONTH AS INTERVAL YEAR TO MONTH);
>> INTERVAL '-1-8' YEAR TO MONTH
SELECT CAST(INTERVAL '-20-10' YEAR TO MONTH AS INTERVAL YEAR);
>> INTERVAL '-20' YEAR
SELECT CAST(INTERVAL '-20-10' YEAR TO MONTH AS INTERVAL MONTH);
>> INTERVAL '-250' MONTH
-- Day-time casts: DAY
SELECT CAST(INTERVAL '-10' DAY AS INTERVAL HOUR);
>> INTERVAL '-240' HOUR
SELECT CAST(INTERVAL '-10' DAY AS INTERVAL MINUTE);
>> INTERVAL '-14400' MINUTE
SELECT CAST(INTERVAL '-10' DAY AS INTERVAL SECOND);
>> INTERVAL '-864000' SECOND
SELECT CAST(INTERVAL '-10' DAY AS INTERVAL DAY TO HOUR);
>> INTERVAL '-10 00' DAY TO HOUR
SELECT CAST(INTERVAL '-10' DAY AS INTERVAL DAY TO MINUTE);
>> INTERVAL '-10 00:00' DAY TO MINUTE
SELECT CAST(INTERVAL '-10' DAY AS INTERVAL DAY TO SECOND);
>> INTERVAL '-10 00:00:00' DAY TO SECOND
SELECT CAST(INTERVAL '-10' DAY AS INTERVAL HOUR TO MINUTE);
>> INTERVAL '-240:00' HOUR TO MINUTE
SELECT CAST(INTERVAL '-10' DAY AS INTERVAL HOUR TO SECOND);
>> INTERVAL '-240:00:00' HOUR TO SECOND
SELECT CAST(INTERVAL '-10' DAY AS INTERVAL MINUTE TO SECOND);
>> INTERVAL '-14400:00' MINUTE TO SECOND
-- Day-time casts: HOUR
SELECT CAST(INTERVAL '-30' HOUR AS INTERVAL DAY);
>> INTERVAL '-1' DAY
SELECT CAST(INTERVAL '-30' HOUR AS INTERVAL MINUTE);
>> INTERVAL '-1800' MINUTE
SELECT CAST(INTERVAL '-30' HOUR AS INTERVAL SECOND);
>> INTERVAL '-108000' SECOND
SELECT CAST(INTERVAL '-30' HOUR AS INTERVAL DAY TO HOUR);
>> INTERVAL '-1 06' DAY TO HOUR
SELECT CAST(INTERVAL '-30' HOUR AS INTERVAL DAY TO MINUTE);
>> INTERVAL '-1 06:00' DAY TO MINUTE
SELECT CAST(INTERVAL '-30' HOUR AS INTERVAL DAY TO SECOND);
>> INTERVAL '-1 06:00:00' DAY TO SECOND
SELECT CAST(INTERVAL '-30' HOUR AS INTERVAL HOUR TO MINUTE);
>> INTERVAL '-30:00' HOUR TO MINUTE
SELECT CAST(INTERVAL '-30' HOUR AS INTERVAL HOUR TO SECOND);
>> INTERVAL '-30:00:00' HOUR TO SECOND
SELECT CAST(INTERVAL '-30' HOUR AS INTERVAL MINUTE TO SECOND);
>> INTERVAL '-1800:00' MINUTE TO SECOND
-- Day-time casts: MINUTE
SELECT CAST(INTERVAL '-1570' MINUTE AS INTERVAL DAY);
>> INTERVAL '-1' DAY
SELECT CAST(INTERVAL '-1570' MINUTE AS INTERVAL HOUR);
>> INTERVAL '-26' HOUR
SELECT CAST(INTERVAL '-1570' MINUTE AS INTERVAL SECOND);
>> INTERVAL '-94200' SECOND
SELECT CAST(INTERVAL '-1570' MINUTE AS INTERVAL DAY TO HOUR);
>> INTERVAL '-1 02' DAY TO HOUR
SELECT CAST(INTERVAL '-1570' MINUTE AS INTERVAL DAY TO MINUTE);
>> INTERVAL '-1 02:10' DAY TO MINUTE
SELECT CAST(INTERVAL '-1570' MINUTE AS INTERVAL DAY TO SECOND);
>> INTERVAL '-1 02:10:00' DAY TO SECOND
SELECT CAST(INTERVAL '-1570' MINUTE AS INTERVAL HOUR TO MINUTE);
>> INTERVAL '-26:10' HOUR TO MINUTE
SELECT CAST(INTERVAL '-1570' MINUTE AS INTERVAL HOUR TO SECOND);
>> INTERVAL '-26:10:00' HOUR TO SECOND
SELECT CAST(INTERVAL '-1570' MINUTE AS INTERVAL MINUTE TO SECOND);
>> INTERVAL '-1570:00' MINUTE TO SECOND
-- Day-time casts: SECOND
SELECT CAST(INTERVAL '-93784.123456789' SECOND AS INTERVAL DAY);
>> INTERVAL '-1' DAY
SELECT CAST(INTERVAL '-93784.123456789' SECOND AS INTERVAL HOUR);
>> INTERVAL '-26' HOUR
SELECT CAST(INTERVAL '-93784.123456789' SECOND AS INTERVAL MINUTE);
>> INTERVAL '-1563' MINUTE
SELECT CAST(INTERVAL '-93784.123456789' SECOND AS INTERVAL DAY TO HOUR);
>> INTERVAL '-1 02' DAY TO HOUR
SELECT CAST(INTERVAL '-93784.123456789' SECOND AS INTERVAL DAY TO MINUTE);
>> INTERVAL '-1 02:03' DAY TO MINUTE
SELECT CAST(INTERVAL '-93784.123456789' SECOND AS INTERVAL DAY TO SECOND);
>> INTERVAL '-1 02:03:04.123457' DAY TO SECOND
SELECT CAST(INTERVAL '-93784.123456789' SECOND AS INTERVAL HOUR TO MINUTE);
>> INTERVAL '-26:03' HOUR TO MINUTE
SELECT CAST(INTERVAL '-93784.123456789' SECOND AS INTERVAL HOUR TO SECOND);
>> INTERVAL '-26:03:04.123457' HOUR TO SECOND
SELECT CAST(INTERVAL '-93784.123456789' SECOND AS INTERVAL MINUTE TO SECOND);
>> INTERVAL '-1563:04.123457' MINUTE TO SECOND
-- Day-time casts: DAY TO HOUR
SELECT CAST(INTERVAL '-1 2' DAY TO HOUR AS INTERVAL DAY);
>> INTERVAL '-1' DAY
SELECT CAST(INTERVAL '-1 2' DAY TO HOUR AS INTERVAL HOUR);
>> INTERVAL '-26' HOUR
SELECT CAST(INTERVAL '-1 2' DAY TO HOUR AS INTERVAL MINUTE);
>> INTERVAL '-1560' MINUTE
SELECT CAST(INTERVAL '-1 2' DAY TO HOUR AS INTERVAL SECOND);
>> INTERVAL '-93600' SECOND
SELECT CAST(INTERVAL '-1 2' DAY TO HOUR AS INTERVAL DAY TO MINUTE);
>> INTERVAL '-1 02:00' DAY TO MINUTE
SELECT CAST(INTERVAL '-1 2' DAY TO HOUR AS INTERVAL DAY TO SECOND);
>> INTERVAL '-1 02:00:00' DAY TO SECOND
SELECT CAST(INTERVAL '-1 2' DAY TO HOUR AS INTERVAL HOUR TO MINUTE);
>> INTERVAL '-26:00' HOUR TO MINUTE
SELECT CAST(INTERVAL '-1 2' DAY TO HOUR AS INTERVAL HOUR TO SECOND);
>> INTERVAL '-26:00:00' HOUR TO SECOND
SELECT CAST(INTERVAL '-1 2' DAY TO HOUR AS INTERVAL MINUTE TO SECOND);
>> INTERVAL '-1560:00' MINUTE TO SECOND
-- Day-time casts: DAY TO MINUTE
SELECT CAST(INTERVAL '-1 2:3' DAY TO MINUTE AS INTERVAL DAY);
>> INTERVAL '-1' DAY
SELECT CAST(INTERVAL '-1 2:3' DAY TO MINUTE AS INTERVAL HOUR);
>> INTERVAL '-26' HOUR
SELECT CAST(INTERVAL '-1 2:3' DAY TO MINUTE AS INTERVAL MINUTE);
>> INTERVAL '-1563' MINUTE
SELECT CAST(INTERVAL '-1 2:3' DAY TO MINUTE AS INTERVAL SECOND);
>> INTERVAL '-93780' SECOND
SELECT CAST(INTERVAL '-1 2:3' DAY TO MINUTE AS INTERVAL DAY TO HOUR);
>> INTERVAL '-1 02' DAY TO HOUR
SELECT CAST(INTERVAL '-1 2:3' DAY TO MINUTE AS INTERVAL DAY TO SECOND);
>> INTERVAL '-1 02:03:00' DAY TO SECOND
SELECT CAST(INTERVAL '-1 2:3' DAY TO MINUTE AS INTERVAL HOUR TO MINUTE);
>> INTERVAL '-26:03' HOUR TO MINUTE
SELECT CAST(INTERVAL '-1 2:3' DAY TO MINUTE AS INTERVAL HOUR TO SECOND);
>> INTERVAL '-26:03:00' HOUR TO SECOND
SELECT CAST(INTERVAL '-1 2:3' DAY TO MINUTE AS INTERVAL MINUTE TO SECOND);
>> INTERVAL '-1563:00' MINUTE TO SECOND
-- Day-time casts: DAY TO SECOND
SELECT CAST(INTERVAL '-1 2:3:4.123456789' DAY TO SECOND AS INTERVAL DAY);
>> INTERVAL '-1' DAY
SELECT CAST(INTERVAL '-1 2:3:4.123456789' DAY TO SECOND AS INTERVAL HOUR);
>> INTERVAL '-26' HOUR
SELECT CAST(INTERVAL '-1 2:3:4.123456789' DAY TO SECOND AS INTERVAL MINUTE);
>> INTERVAL '-1563' MINUTE
SELECT CAST(INTERVAL '-1 2:3:4.123456789' DAY TO SECOND AS INTERVAL SECOND);
>> INTERVAL '-93784.123457' SECOND
SELECT CAST(INTERVAL '-1 2:3:4.123456789' DAY TO SECOND AS INTERVAL DAY TO HOUR);
>> INTERVAL '-1 02' DAY TO HOUR
SELECT CAST(INTERVAL '-1 2:3:4.123456789' DAY TO SECOND AS INTERVAL DAY TO MINUTE);
>> INTERVAL '-1 02:03' DAY TO MINUTE
SELECT CAST(INTERVAL '-1 2:3:4.123456789' DAY TO SECOND AS INTERVAL HOUR TO MINUTE);
>> INTERVAL '-26:03' HOUR TO MINUTE
SELECT CAST(INTERVAL '-1 2:3:4.123456789' DAY TO SECOND AS INTERVAL HOUR TO SECOND);
>> INTERVAL '-26:03:04.123457' HOUR TO SECOND
SELECT CAST(INTERVAL '-1 2:3:4.123456789' DAY TO SECOND AS INTERVAL MINUTE TO SECOND);
>> INTERVAL '-1563:04.123457' MINUTE TO SECOND
-- Day-time casts: HOUR TO MINUTE
SELECT CAST(INTERVAL '-30:2' HOUR TO MINUTE AS INTERVAL DAY);
>> INTERVAL '-1' DAY
SELECT CAST(INTERVAL '-30:2' HOUR TO MINUTE AS INTERVAL HOUR);
>> INTERVAL '-30' HOUR
SELECT CAST(INTERVAL '-30:2' HOUR TO MINUTE AS INTERVAL MINUTE);
>> INTERVAL '-1802' MINUTE
SELECT CAST(INTERVAL '-30:2' HOUR TO MINUTE AS INTERVAL SECOND);
>> INTERVAL '-108120' SECOND
SELECT CAST(INTERVAL '-30:2' HOUR TO MINUTE AS INTERVAL DAY TO HOUR);
>> INTERVAL '-1 06' DAY TO HOUR
SELECT CAST(INTERVAL '-30:2' HOUR TO MINUTE AS INTERVAL DAY TO MINUTE);
>> INTERVAL '-1 06:02' DAY TO MINUTE
SELECT CAST(INTERVAL '-30:2' HOUR TO MINUTE AS INTERVAL DAY TO SECOND);
>> INTERVAL '-1 06:02:00' DAY TO SECOND
SELECT CAST(INTERVAL '-30:2' HOUR TO MINUTE AS INTERVAL HOUR TO SECOND);
>> INTERVAL '-30:02:00' HOUR TO SECOND
SELECT CAST(INTERVAL '-30:2' HOUR TO MINUTE AS INTERVAL MINUTE TO SECOND);
>> INTERVAL '-1802:00' MINUTE TO SECOND
-- Day-time casts: HOUR TO SECOND
SELECT CAST(INTERVAL '-30:2:4.123456789' HOUR TO SECOND AS INTERVAL DAY);
>> INTERVAL '-1' DAY
SELECT CAST(INTERVAL '-30:2:4.123456789' HOUR TO SECOND AS INTERVAL HOUR);
>> INTERVAL '-30' HOUR
SELECT CAST(INTERVAL '-30:2:4.123456789' HOUR TO SECOND AS INTERVAL MINUTE);
>> INTERVAL '-1802' MINUTE
SELECT CAST(INTERVAL '-30:2:4.123456789' HOUR TO SECOND AS INTERVAL SECOND);
>> INTERVAL '-108124.123457' SECOND
SELECT CAST(INTERVAL '-30:2:4.123456789' HOUR TO SECOND AS INTERVAL DAY TO HOUR);
>> INTERVAL '-1 06' DAY TO HOUR
SELECT CAST(INTERVAL '-30:2:4.123456789' HOUR TO SECOND AS INTERVAL DAY TO MINUTE);
>> INTERVAL '-1 06:02' DAY TO MINUTE
SELECT CAST(INTERVAL '-30:2:4.123456789' HOUR TO SECOND AS INTERVAL DAY TO SECOND);
>> INTERVAL '-1 06:02:04.123457' DAY TO SECOND
SELECT CAST(INTERVAL '-30:2:4.123456789' HOUR TO SECOND AS INTERVAL HOUR TO MINUTE);
>> INTERVAL '-30:02' HOUR TO MINUTE
SELECT CAST(INTERVAL '-30:2:4.123456789' HOUR TO SECOND AS INTERVAL MINUTE TO SECOND);
>> INTERVAL '-1802:04.123457' MINUTE TO SECOND
-- Day-time casts: MINUTE TO SECOND
SELECT CAST(INTERVAL '-1803:4.123456789' MINUTE TO SECOND AS INTERVAL DAY);
>> INTERVAL '-1' DAY
SELECT CAST(INTERVAL '-1803:4.123456789' MINUTE TO SECOND AS INTERVAL HOUR);
>> INTERVAL '-30' HOUR
SELECT CAST(INTERVAL '-1803:4.123456789' MINUTE TO SECOND AS INTERVAL MINUTE);
>> INTERVAL '-1803' MINUTE
SELECT CAST(INTERVAL '-1803:4.123456789' MINUTE TO SECOND AS INTERVAL SECOND);
>> INTERVAL '-108184.123457' SECOND
SELECT CAST(INTERVAL '-1803:4.123456789' MINUTE TO SECOND AS INTERVAL DAY TO HOUR);
>> INTERVAL '-1 06' DAY TO HOUR
SELECT CAST(INTERVAL '-1803:4.123456789' MINUTE TO SECOND AS INTERVAL DAY TO MINUTE);
>> INTERVAL '-1 06:03' DAY TO MINUTE
SELECT CAST(INTERVAL '-1803:4.123456789' MINUTE TO SECOND AS INTERVAL DAY TO SECOND);
>> INTERVAL '-1 06:03:04.123457' DAY TO SECOND
SELECT CAST(INTERVAL '-1803:4.123456789' MINUTE TO SECOND AS INTERVAL HOUR TO MINUTE);
>> INTERVAL '-30:03' HOUR TO MINUTE
SELECT CAST(INTERVAL '-1803:4.123456789' MINUTE TO SECOND AS INTERVAL HOUR TO SECOND);
>> INTERVAL '-30:03:04.123457' HOUR TO SECOND
-- Cast with fractional seconds precision
SELECT CAST(INTERVAL '10:11.123456789' MINUTE TO SECOND AS INTERVAL SECOND(3, 9));
>> INTERVAL '611.123456789' SECOND
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