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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 type was DATETIME and not DATE as is the
  norm.
- By changing the order of the date internal enumerations the deviant
  type casting is resolved (Item_date_add_interval::fix_length_and_dec()
  which determines result type for this operation assumes that addition
  of any interval with value <= INTERVAL_DAY to date value will result
  in date). There are two independant places to change:
  interval_names[] and interval_type.


mysql-test/r/func_date_add.result:
  Updated result file for type casting test
mysql-test/r/func_time.result:
  Updated result file for type casting test
mysql-test/t/func_date_add.test:
  Added test for type casting when adding intervals to date.
sql/item_timefunc.cc:
  Changed order of "week" key word to match the date interval enumeration.
sql/item_timefunc.h:
  Changed the order of the enumeration to better follow interval sizes.
This commit is contained in:
unknown
2006-10-02 12:37:01 +02:00
parent a4b1695376
commit 5e71afcbe7
5 changed files with 47 additions and 13 deletions
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4
mysql-test/r/func_time.result
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@ -612,7 +612,7 @@ date_add(date,INTERVAL "1 1:1:1" DAY_SECOND)
2003-01-03 01:01:01
select date_add(date,INTERVAL "1" WEEK) from t1;
date_add(date,INTERVAL "1" WEEK)
2003-01-09 00:00:00
2003-01-09
select date_add(date,INTERVAL "1" QUARTER) from t1;
date_add(date,INTERVAL "1" QUARTER)
2003-04-02
@ -621,7 +621,7 @@ timestampadd(MINUTE, 1, date)
2003-01-02 00:01:00
select timestampadd(WEEK, 1, date) from t1;
timestampadd(WEEK, 1, date)
2003-01-09 00:00:00
2003-01-09
select timestampadd(SQL_TSI_SECOND, 1, date) from t1;
timestampadd(SQL_TSI_SECOND, 1, date)
2003-01-02 00:00:01