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Fix (hopefully for the last time) problems with datetime values displaying

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like '23:59:60' because of fractional-second roundoff problems.  Trying
to control this upstream of the actual display code was hopeless; the right
way is to explicitly round fractional seconds in the display code and then
refigure the results if the fraction rounds up to 1.  Per bug #1927.
This commit is contained in:
Tom Lane
2005-10-09 17:21:47 +00:00
parent 7754f7634c
commit 313ed1ed94
10 changed files with 132 additions and 63 deletions
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8
src/backend/utils/adt/datetime.c
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@@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/utils/adt/datetime.c,v 1.157 2005/07/23 14:25:33 momjian Exp $
* $PostgreSQL: pgsql/src/backend/utils/adt/datetime.c,v 1.158 2005/10/09 17:21:46 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@@ -3488,8 +3488,8 @@ EncodeTimeOnly(struct pg_tm *tm, fsec_t fsec, int *tzp, int style, char *str)
sprintf(str, "%02d:%02d", tm->tm_hour, tm->tm_min);
/*
* Print fractional seconds if any. The field widths here should be
* at least equal to the larger of MAX_TIME_PRECISION and
* Print fractional seconds if any. The fractional field widths
* here should be equal to the larger of MAX_TIME_PRECISION and
* MAX_TIMESTAMP_PRECISION.
*/
if (fsec != 0)
@@ -3497,7 +3497,7 @@ EncodeTimeOnly(struct pg_tm *tm, fsec_t fsec, int *tzp, int style, char *str)
#ifdef HAVE_INT64_TIMESTAMP
sprintf(str + strlen(str), ":%02d.%06d", tm->tm_sec, fsec);
#else
sprintf(str + strlen(str), ":%012.9f", tm->tm_sec + fsec);
sprintf(str + strlen(str), ":%013.10f", tm->tm_sec + fsec);
#endif
TrimTrailingZeros(str);
}