diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/backend/access/brin/brin_minmax_multi.c | 21 |
1 files changed, 13 insertions, 8 deletions
diff --git a/src/backend/access/brin/brin_minmax_multi.c b/src/backend/access/brin/brin_minmax_multi.c index 70109960e83..42bb177290e 100644 --- a/src/backend/access/brin/brin_minmax_multi.c +++ b/src/backend/access/brin/brin_minmax_multi.c @@ -2127,6 +2127,9 @@ brin_minmax_multi_distance_interval(PG_FUNCTION_ARGS) Interval *ib = PG_GETARG_INTERVAL_P(1); Interval *result; + int64 dayfraction; + int64 days; + result = (Interval *) palloc(sizeof(Interval)); result->month = ib->month - ia->month; @@ -2152,16 +2155,18 @@ brin_minmax_multi_distance_interval(PG_FUNCTION_ARGS) errmsg("interval out of range"))); /* - * We assume months have 31 days - we don't need to be precise, in the - * worst case we'll build somewhat less efficient ranges. + * Delta is (fractional) number of days between the intervals. Assume + * months have 30 days for consistency with interval_cmp_internal. + * We don't need to be exact, in the worst case we'll build a bit less + * efficient ranges. But we should not contradict interval_cmp. */ - delta = (float8) (result->month * 31 + result->day); - - /* convert to microseconds (just like the time part) */ - delta = 24L * 3600L * delta; + dayfraction = result->time % USECS_PER_DAY; + days = result->time / USECS_PER_DAY; + days += result->month * INT64CONST(30); + days += result->day; - /* and add the time part */ - delta += result->time / (float8) 1000000.0; + /* convert to double precision */ + delta = (double) days + dayfraction / (double) USECS_PER_DAY; Assert(delta >= 0); |