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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
commit 4447a02cf1
59 changed files with 4771 additions and 395 deletions
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10
sql/item_cmpfunc.cc
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@ -2312,7 +2312,8 @@ bool Item_func_ifnull::date_op(THD *thd, MYSQL_TIME *ltime, date_mode_t fuzzydat
DBUG_ASSERT(fixed == 1);
for (uint i= 0; i < 2; i++)
{
Datetime dt(thd, args[i], fuzzydate & ~TIME_FUZZY_DATES);
Datetime_truncation_not_needed dt(thd, args[i],
fuzzydate & ~TIME_FUZZY_DATES);
if (!(dt.copy_to_mysql_time(ltime, mysql_timestamp_type())))
return (null_value= false);
}
@ -2812,7 +2813,7 @@ Item_func_nullif::date_op(THD *thd, MYSQL_TIME *ltime, date_mode_t fuzzydate)
DBUG_ASSERT(fixed == 1);
if (!compare())
return (null_value= true);
Datetime dt(thd, args[2], fuzzydate);
Datetime_truncation_not_needed dt(thd, args[2], fuzzydate);
return (null_value= dt.copy_to_mysql_time(ltime, mysql_timestamp_type()));
}
@ -2987,7 +2988,7 @@ bool Item_func_case::date_op(THD *thd, MYSQL_TIME *ltime, date_mode_t fuzzydate)
Item *item= find_item();
if (!item)
return (null_value= true);
Datetime dt(thd, item, fuzzydate);
Datetime_truncation_not_needed dt(thd, item, fuzzydate);
return (null_value= dt.copy_to_mysql_time(ltime, mysql_timestamp_type()));
}
@ -3339,7 +3340,8 @@ bool Item_func_coalesce::date_op(THD *thd, MYSQL_TIME *ltime, date_mode_t fuzzyd
DBUG_ASSERT(fixed == 1);
for (uint i= 0; i < arg_count; i++)
{
Datetime dt(thd, args[i], fuzzydate & ~TIME_FUZZY_DATES);
Datetime_truncation_not_needed dt(thd, args[i],
fuzzydate & ~TIME_FUZZY_DATES);
if (!dt.copy_to_mysql_time(ltime, mysql_timestamp_type()))
return (null_value= false);
}