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MDEV-16991 Rounding vs truncation for TIME, DATETIME, TIMESTAMP

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This commit is contained in:
Alexander Barkov
2018-11-23 19:04:42 +04:00
parent 27f3329ff6
commit 4447a02cf1
59 changed files with 4774 additions and 398 deletions
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2
sql/sql_partition.cc
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@ -8217,6 +8217,7 @@ static int get_part_iter_for_interval_via_mapping(partition_info *part_info,
field->type() == MYSQL_TYPE_DATETIME))
{
/* Monotonic, but return NULL for dates with zeros in month/day. */
DBUG_ASSERT(field->cmp_type() == TIME_RESULT); // No rounding/truncation
zero_in_start_date= field->get_date(&start_date, date_mode_t(0));
DBUG_PRINT("info", ("zero start %u %04d-%02d-%02d",
zero_in_start_date, start_date.year,
@ -8241,6 +8242,7 @@ static int get_part_iter_for_interval_via_mapping(partition_info *part_info,
!part_info->part_expr->null_value)
{
MYSQL_TIME end_date;
DBUG_ASSERT(field->cmp_type() == TIME_RESULT); // No rounding/truncation
bool zero_in_end_date= field->get_date(&end_date, date_mode_t(0));
/*
This is an optimization for TO_DAYS()/TO_SECONDS() to avoid scanning