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提交 18f836ec authored 作者: Evgenij Ryazanov's avatar Evgenij Ryazanov
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Add support of INTERVAL data type to EXTRACT function

上级 ff41fdeb
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正在显示 包含 354 行增加 和 49 行删除
h2/src/main/org/h2/util/DateTimeFunctions.java
浏览文件 @ 18f836ec
......@@ -37,10 +37,12 @@ import java.util.TimeZone;
import org.h2.api.ErrorCode;
import org.h2.expression.Function;
import org.h2.message.DbException;
import org.h2.value.DataType;
import org.h2.value.Value;
import org.h2.value.ValueDate;
import org.h2.value.ValueDecimal;
import org.h2.value.ValueInt;
import org.h2.value.ValueInterval;
import org.h2.value.ValueTime;
import org.h2.value.ValueTimestamp;
import org.h2.value.ValueTimestampTimeZone;
......@@ -331,8 +333,25 @@ public final class DateTimeFunctions {
if (field != EPOCH) {
result = ValueInt.get(getIntDatePart(value, field));
} else {
// Case where we retrieve the EPOCH time.
if (value instanceof ValueInterval) {
ValueInterval interval = (ValueInterval) value;
BigDecimal bd;
if (interval.getQualifier().isYearMonth()) {
interval = (ValueInterval) interval.convertTo(Value.INTERVAL_YEAR_TO_MONTH);
long leading = interval.getLeading();
long remaining = interval.getRemaining();
bd = BigDecimal.valueOf(leading).multiply(BigDecimal.valueOf(31557600))
.add(BigDecimal.valueOf(remaining * 2592000));
if (interval.isNegative()) {
bd = bd.negate();
}
} else {
bd = new BigDecimal(DateTimeUtils.intervalToAbsolute(interval))
.divide(BigDecimal.valueOf(1_000_000_000L));
}
return ValueDecimal.get(bd);
}
// First we retrieve the dateValue and his time in nanoseconds.
long[] a = DateTimeUtils.dateAndTimeFromValue(value);
long dateValue = a[0];
......@@ -602,6 +621,44 @@ public final class DateTimeFunctions {
* @return the value
*/
public static int getIntDatePart(Value date, int field) {
if (date instanceof ValueInterval) {
ValueInterval interval = (ValueInterval) date;
long v;
switch (field) {
case YEAR:
v = DateTimeUtils.yearsFromInterval(interval);
break;
case MONTH:
v = DateTimeUtils.monthFromInterval(interval);
break;
case DAY_OF_MONTH:
case DAY_OF_WEEK:
case DAY_OF_YEAR:
v = DateTimeUtils.daysFromInterval(interval);
break;
case HOUR:
v = DateTimeUtils.hoursFromInterval(interval);
break;
case MINUTE:
v = DateTimeUtils.minutesFromInterval(interval);
break;
case SECOND:
v = DateTimeUtils.nanosFromInterval(interval) / 1_000_000_000;
break;
case MILLISECOND:
v = DateTimeUtils.nanosFromInterval(interval) / 1_000_000 % 1_000;
break;
case MICROSECOND:
v = DateTimeUtils.nanosFromInterval(interval) / 1_000 % 1_000_000;
break;
case NANOSECOND:
v = DateTimeUtils.nanosFromInterval(interval) % 1_000_000_000;
break;
default:
throw DbException.getUnsupportedException("getDatePart(" + date + ", " + field + ')');
}
return (int) v;
} else {
long[] a = DateTimeUtils.dateAndTimeFromValue(date);
long dateValue = a[0];
long timeNanos = a[1];
......@@ -653,6 +710,7 @@ public final class DateTimeFunctions {
return offsetMinutes % 60;
}
}
}
throw DbException.getUnsupportedException("getDatePart(" + date + ", " + field + ')');
}
......
h2/src/main/org/h2/util/DateTimeUtils.java
浏览文件 @ 18f836ec
......@@ -2039,4 +2039,149 @@ public class DateTimeUtils {
return Math.abs(absolute.longValue());
}
/**
* @param value interval
* @return years, or 0
*/
public static long yearsFromInterval(ValueInterval value) {
IntervalQualifier qualifier = value.getQualifier();
if (qualifier == IntervalQualifier.YEAR || qualifier == IntervalQualifier.YEAR_TO_MONTH) {
long v = value.getLeading();
if (value.isNegative()) {
v = -v;
}
return v;
} else {
return 0;
}
}
/**
* @param value interval
* @return months, or 0
*/
public static long monthFromInterval(ValueInterval value) {
IntervalQualifier qualifier = value.getQualifier();
long v;
if (qualifier == IntervalQualifier.MONTH) {
v = value.getLeading();
} else if (qualifier == IntervalQualifier.YEAR_TO_MONTH){
v = value.getRemaining();
} else {
return 0;
}
if (value.isNegative()) {
v = -v;
}
return v;
}
/**
* @param value interval
* @return months, or 0
*/
public static long daysFromInterval(ValueInterval value) {
switch (value.getQualifier()) {
case DAY:
case DAY_TO_HOUR:
case DAY_TO_MINUTE:
case DAY_TO_SECOND:
long v = value.getLeading();
if (value.isNegative()) {
v = -v;
}
return v;
default:
return 0;
}
}
/**
* @param value interval
* @return hours, or 0
*/
public static long hoursFromInterval(ValueInterval value) {
long v;
switch (value.getQualifier()) {
case HOUR:
case HOUR_TO_MINUTE:
case HOUR_TO_SECOND:
v = value.getLeading();
break;
case DAY_TO_HOUR:
v = value.getRemaining();
break;
case DAY_TO_MINUTE:
v = value.getRemaining() / 60;
break;
case DAY_TO_SECOND:
v = value.getRemaining() / 3_600_000_000_000L;
break;
default:
return 0;
}
if (value.isNegative()) {
v = -v;
}
return v;
}
/**
* @param value interval
* @return minutes, or 0
*/
public static long minutesFromInterval(ValueInterval value) {
long v;
switch (value.getQualifier()) {
case MINUTE:
case MINUTE_TO_SECOND:
v = value.getLeading();
break;
case DAY_TO_MINUTE:
v = value.getRemaining() % 60;
break;
case DAY_TO_SECOND:
v = value.getRemaining() / 60_000_000_000L % 60;
break;
case HOUR_TO_MINUTE:
v = value.getRemaining();
break;
case HOUR_TO_SECOND:
v = value.getRemaining() / 60_000_000_000L;
break;
default:
return 0;
}
if (value.isNegative()) {
v = -v;
}
return v;
}
/**
* @param value interval
* @return nanoseconds, or 0
*/
public static long nanosFromInterval(ValueInterval value) {
long v;
switch (value.getQualifier()) {
case SECOND:
v = value.getLeading() * 1_000_000_000 + value.getRemaining();
break;
case DAY_TO_SECOND:
case HOUR_TO_SECOND:
v = value.getRemaining() % 60_000_000_000L;
break;
case MINUTE_TO_SECOND:
v = value.getRemaining();
break;
default:
return 0;
}
if (value.isNegative()) {
v = -v;
}
return v;
}
}
h2/src/test/org/h2/test/scripts/functions/timeanddate/extract.sql
浏览文件 @ 18f836ec
......@@ -56,6 +56,24 @@ select EXTRACT (EPOCH from timestamp with time zone '2000-01-03 12:00:00.123456+
select extract(EPOCH from '2001-02-03 14:15:16');
>> 981209716
SELECT EXTRACT(EPOCH FROM INTERVAL '10.1' SECOND);
>> 10.1
SELECT EXTRACT(EPOCH FROM INTERVAL -'0.000001' SECOND);
>> -0.000001
SELECT EXTRACT(EPOCH FROM INTERVAL '0-1' YEAR TO MONTH);
>> 2592000
SELECT EXTRACT(EPOCH FROM INTERVAL '-0-1' YEAR TO MONTH);
>> -2592000
SELECT EXTRACT(EPOCH FROM INTERVAL '1-0' YEAR TO MONTH);
>> 31557600
SELECT EXTRACT(EPOCH FROM INTERVAL '-1-0' YEAR TO MONTH);
>> -31557600
SELECT EXTRACT(TIMEZONE_HOUR FROM TIMESTAMP WITH TIME ZONE '2010-01-02 5:00:00+07:15');
>> 7
......@@ -76,3 +94,87 @@ select extract(hour from '2001-02-03 14:15:16');
select extract(week from timestamp '2001-02-03 14:15:16');
>> 5
SELECT EXTRACT(YEAR FROM INTERVAL '-1' YEAR);
>> -1
SELECT EXTRACT(YEAR FROM INTERVAL '1-2' YEAR TO MONTH);
>> 1
SELECT EXTRACT(MONTH FROM INTERVAL '-1-3' YEAR TO MONTH);
>> -3
SELECT EXTRACT(MONTH FROM INTERVAL '3' MONTH);
>> 3
SELECT EXTRACT(DAY FROM INTERVAL '1100' DAY);
>> 1100
SELECT EXTRACT(DAY FROM INTERVAL '10 23' DAY TO HOUR);
>> 10
SELECT EXTRACT(DAY FROM INTERVAL '10 23:15' DAY TO MINUTE);
>> 10
SELECT EXTRACT(DAY FROM INTERVAL '10 23:15:30' DAY TO SECOND);
>> 10
SELECT EXTRACT(HOUR FROM INTERVAL '15' HOUR);
>> 15
SELECT EXTRACT(HOUR FROM INTERVAL '2 15' DAY TO HOUR);
>> 15
SELECT EXTRACT(HOUR FROM INTERVAL '2 10:30' DAY TO MINUTE);
>> 10
SELECT EXTRACT(HOUR FROM INTERVAL '2 10:30:15' DAY TO SECOND);
>> 10
SELECT EXTRACT(HOUR FROM INTERVAL '20:10' HOUR TO MINUTE);
>> 20
SELECT EXTRACT(HOUR FROM INTERVAL '20:10:22' HOUR TO SECOND);
>> 20
SELECT EXTRACT(MINUTE FROM INTERVAL '-35' MINUTE);
>> -35
SELECT EXTRACT(MINUTE FROM INTERVAL '1 20:33' DAY TO MINUTE);
>> 33
SELECT EXTRACT(MINUTE FROM INTERVAL '1 20:33:10' DAY TO SECOND);
>> 33
SELECT EXTRACT(MINUTE FROM INTERVAL '20:34' HOUR TO MINUTE);
>> 34
SELECT EXTRACT(MINUTE FROM INTERVAL '20:34:10' HOUR TO SECOND);
>> 34
SELECT EXTRACT(MINUTE FROM INTERVAL '-34:10' MINUTE TO SECOND);
>> -34
SELECT EXTRACT(SECOND FROM INTERVAL '-100' SECOND);
>> -100
SELECT EXTRACT(SECOND FROM INTERVAL '10 11:22:33' DAY TO SECOND);
>> 33
SELECT EXTRACT(SECOND FROM INTERVAL '1:2:3' HOUR TO SECOND);
>> 3
SELECT EXTRACT(SECOND FROM INTERVAL '-2:43' MINUTE TO SECOND);
>> -43
SELECT EXTRACT(SECOND FROM INTERVAL '11.123456789' SECOND);
>> 11
SELECT EXTRACT(MILLISECOND FROM INTERVAL '11.123456789' SECOND);
>> 123
SELECT EXTRACT(MICROSECOND FROM INTERVAL '11.123456789' SECOND);
>> 123456
SELECT EXTRACT(NANOSECOND FROM INTERVAL '11.123456789' SECOND);
>> 123456789
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