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BUG#21811 Odd casting with date + INTERVAL arithmetic

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- Type casting was not consequent, thus when adding a DATE type with
  a WEEK interval the result tpe was DATETIME and not DATE as is the
  norm.
- By changing the order of the date type enumerations the type casting
  bug is resolved. To comply with the new order the array 
  interval_type_to_name needed to change accordingly.


include/my_time.h:
  Changed enumeration order to make week interval appear in a more
  logical order. This affects type casting when a date is added to an
  interval.
sql/time.cc:
  Moved string WEEK to match enumeration in interval_type
This commit is contained in:
unknown 2006-10-11 10:17:39 +02:00
commit c247bf9dc3
2 changed files with 27 additions and 6 deletions
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include/my_time.h
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@ -92,15 +92,25 @@ int my_date_to_str(const MYSQL_TIME *l_time, char *to);
int my_datetime_to_str(const MYSQL_TIME *l_time, char *to);
int my_TIME_to_str(const MYSQL_TIME *l_time, char *to);
/*
The following must be sorted so that simple intervals comes first.
(get_interval_value() depends on this)
/*
Available interval types used in any statement.
'interval_type' must be sorted so that simple intervals comes first,
ie year, quarter, month, week, day, hour, etc. The order based on
interval size is also important and the intervals should be kept in a
large to smaller order. (get_interval_value() depends on this)
Note: If you change the order of elements in this enum you should fix
order of elements in 'interval_type_to_name' and 'interval_names'
arrays
See also interval_type_to_name, get_interval_value, interval_names
*/
enum interval_type
{
INTERVAL_YEAR, INTERVAL_QUARTER, INTERVAL_MONTH, INTERVAL_DAY, INTERVAL_HOUR,
INTERVAL_MINUTE, INTERVAL_WEEK, INTERVAL_SECOND, INTERVAL_MICROSECOND ,
INTERVAL_YEAR, INTERVAL_QUARTER, INTERVAL_MONTH, INTERVAL_WEEK, INTERVAL_DAY,
INTERVAL_HOUR, INTERVAL_MINUTE, INTERVAL_SECOND, INTERVAL_MICROSECOND,
INTERVAL_YEAR_MONTH, INTERVAL_DAY_HOUR, INTERVAL_DAY_MINUTE,
INTERVAL_DAY_SECOND, INTERVAL_HOUR_MINUTE, INTERVAL_HOUR_SECOND,
INTERVAL_MINUTE_SECOND, INTERVAL_DAY_MICROSECOND, INTERVAL_HOUR_MICROSECOND,