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Fix for bug #16226 (timestamp_diff truncation issue when requesting

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difference between timestamp in values of months and quarters.)

Problem:  when requesting timestamp diff in months or quarters, it
would only examine the date (and not the time) for the comparison.

Solution:  increased precision of comparison.


mysql-test/r/func_time.result:
  Additional test results
mysql-test/t/func_time.test:
  Additional tests
sql/item_timefunc.cc:
  Fix for timestamp diff issue.  Added microsecond precision when
  comparing months or quarters; previously only examined date for
  these comparisons.
This commit is contained in:
unknown
2006-07-28 20:51:17 -07:00
parent 4d6efe891a
commit 32fbc6da63
3 changed files with 118 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

72
mysql-test/r/func_time.result
View File

@ -667,6 +667,78 @@ timestampdiff(SQL_TSI_DAY, '1996-02-01', '1996-03-01') as a3,
timestampdiff(SQL_TSI_DAY, '2000-02-01', '2000-03-01') as a4;
a1 a2 a3 a4
28 28 29 29
SELECT TIMESTAMPDIFF(day,'2006-01-10 14:30:28','2006-01-11 14:30:27');
TIMESTAMPDIFF(day,'2006-01-10 14:30:28','2006-01-11 14:30:27')
0
SELECT TIMESTAMPDIFF(day,'2006-01-10 14:30:28','2006-01-11 14:30:28');
TIMESTAMPDIFF(day,'2006-01-10 14:30:28','2006-01-11 14:30:28')
1
SELECT TIMESTAMPDIFF(day,'2006-01-10 14:30:28','2006-01-11 14:30:29');
TIMESTAMPDIFF(day,'2006-01-10 14:30:28','2006-01-11 14:30:29')
1
SELECT TIMESTAMPDIFF(day,'2006-01-10 14:30:28','2006-01-12 14:30:27');
TIMESTAMPDIFF(day,'2006-01-10 14:30:28','2006-01-12 14:30:27')
1
SELECT TIMESTAMPDIFF(day,'2006-01-10 14:30:28','2006-01-12 14:30:28');
TIMESTAMPDIFF(day,'2006-01-10 14:30:28','2006-01-12 14:30:28')
2
SELECT TIMESTAMPDIFF(day,'2006-01-10 14:30:28','2006-01-12 14:30:29');
TIMESTAMPDIFF(day,'2006-01-10 14:30:28','2006-01-12 14:30:29')
2
SELECT TIMESTAMPDIFF(week,'2006-01-10 14:30:28','2006-01-17 14:30:27');
TIMESTAMPDIFF(week,'2006-01-10 14:30:28','2006-01-17 14:30:27')
0
SELECT TIMESTAMPDIFF(week,'2006-01-10 14:30:28','2006-01-17 14:30:28');
TIMESTAMPDIFF(week,'2006-01-10 14:30:28','2006-01-17 14:30:28')
1
SELECT TIMESTAMPDIFF(week,'2006-01-10 14:30:28','2006-01-17 14:30:29');
TIMESTAMPDIFF(week,'2006-01-10 14:30:28','2006-01-17 14:30:29')
1
SELECT TIMESTAMPDIFF(week,'2006-01-10 14:30:28','2006-01-24 14:30:27');
TIMESTAMPDIFF(week,'2006-01-10 14:30:28','2006-01-24 14:30:27')
1
SELECT TIMESTAMPDIFF(week,'2006-01-10 14:30:28','2006-01-24 14:30:28');
TIMESTAMPDIFF(week,'2006-01-10 14:30:28','2006-01-24 14:30:28')
2
SELECT TIMESTAMPDIFF(week,'2006-01-10 14:30:28','2006-01-24 14:30:29');
TIMESTAMPDIFF(week,'2006-01-10 14:30:28','2006-01-24 14:30:29')
2
SELECT TIMESTAMPDIFF(month,'2006-01-10 14:30:28','2006-02-10 14:30:27');
TIMESTAMPDIFF(month,'2006-01-10 14:30:28','2006-02-10 14:30:27')
0
SELECT TIMESTAMPDIFF(month,'2006-01-10 14:30:28','2006-02-10 14:30:28');
TIMESTAMPDIFF(month,'2006-01-10 14:30:28','2006-02-10 14:30:28')
1
SELECT TIMESTAMPDIFF(month,'2006-01-10 14:30:28','2006-02-10 14:30:29');
TIMESTAMPDIFF(month,'2006-01-10 14:30:28','2006-02-10 14:30:29')
1
SELECT TIMESTAMPDIFF(month,'2006-01-10 14:30:28','2006-03-10 14:30:27');
TIMESTAMPDIFF(month,'2006-01-10 14:30:28','2006-03-10 14:30:27')
1
SELECT TIMESTAMPDIFF(month,'2006-01-10 14:30:28','2006-03-10 14:30:28');
TIMESTAMPDIFF(month,'2006-01-10 14:30:28','2006-03-10 14:30:28')
2
SELECT TIMESTAMPDIFF(month,'2006-01-10 14:30:28','2006-03-10 14:30:29');
TIMESTAMPDIFF(month,'2006-01-10 14:30:28','2006-03-10 14:30:29')
2
SELECT TIMESTAMPDIFF(year,'2006-01-10 14:30:28','2007-01-10 14:30:27');
TIMESTAMPDIFF(year,'2006-01-10 14:30:28','2007-01-10 14:30:27')
0
SELECT TIMESTAMPDIFF(year,'2006-01-10 14:30:28','2007-01-10 14:30:28');
TIMESTAMPDIFF(year,'2006-01-10 14:30:28','2007-01-10 14:30:28')
1
SELECT TIMESTAMPDIFF(year,'2006-01-10 14:30:28','2007-01-10 14:30:29');
TIMESTAMPDIFF(year,'2006-01-10 14:30:28','2007-01-10 14:30:29')
1
SELECT TIMESTAMPDIFF(year,'2006-01-10 14:30:28','2008-01-10 14:30:27');
TIMESTAMPDIFF(year,'2006-01-10 14:30:28','2008-01-10 14:30:27')
1
SELECT TIMESTAMPDIFF(year,'2006-01-10 14:30:28','2008-01-10 14:30:28');
TIMESTAMPDIFF(year,'2006-01-10 14:30:28','2008-01-10 14:30:28')
2
SELECT TIMESTAMPDIFF(year,'2006-01-10 14:30:28','2008-01-10 14:30:29');
TIMESTAMPDIFF(year,'2006-01-10 14:30:28','2008-01-10 14:30:29')
2
select date_add(time,INTERVAL 1 SECOND) from t1;
date_add(time,INTERVAL 1 SECOND)
NULL

31
mysql-test/t/func_time.test
View File

@ -318,6 +318,37 @@ select timestampdiff(SQL_TSI_DAY, '1986-02-01', '1986-03-01') as a1,
timestampdiff(SQL_TSI_DAY, '1996-02-01', '1996-03-01') as a3,
timestampdiff(SQL_TSI_DAY, '2000-02-01', '2000-03-01') as a4;
# bug 16226
SELECT TIMESTAMPDIFF(day,'2006-01-10 14:30:28','2006-01-11 14:30:27');
SELECT TIMESTAMPDIFF(day,'2006-01-10 14:30:28','2006-01-11 14:30:28');
SELECT TIMESTAMPDIFF(day,'2006-01-10 14:30:28','2006-01-11 14:30:29');
SELECT TIMESTAMPDIFF(day,'2006-01-10 14:30:28','2006-01-12 14:30:27');
SELECT TIMESTAMPDIFF(day,'2006-01-10 14:30:28','2006-01-12 14:30:28');
SELECT TIMESTAMPDIFF(day,'2006-01-10 14:30:28','2006-01-12 14:30:29');
SELECT TIMESTAMPDIFF(week,'2006-01-10 14:30:28','2006-01-17 14:30:27');
SELECT TIMESTAMPDIFF(week,'2006-01-10 14:30:28','2006-01-17 14:30:28');
SELECT TIMESTAMPDIFF(week,'2006-01-10 14:30:28','2006-01-17 14:30:29');
SELECT TIMESTAMPDIFF(week,'2006-01-10 14:30:28','2006-01-24 14:30:27');
SELECT TIMESTAMPDIFF(week,'2006-01-10 14:30:28','2006-01-24 14:30:28');
SELECT TIMESTAMPDIFF(week,'2006-01-10 14:30:28','2006-01-24 14:30:29');
SELECT TIMESTAMPDIFF(month,'2006-01-10 14:30:28','2006-02-10 14:30:27');
SELECT TIMESTAMPDIFF(month,'2006-01-10 14:30:28','2006-02-10 14:30:28');
SELECT TIMESTAMPDIFF(month,'2006-01-10 14:30:28','2006-02-10 14:30:29');
SELECT TIMESTAMPDIFF(month,'2006-01-10 14:30:28','2006-03-10 14:30:27');
SELECT TIMESTAMPDIFF(month,'2006-01-10 14:30:28','2006-03-10 14:30:28');
SELECT TIMESTAMPDIFF(month,'2006-01-10 14:30:28','2006-03-10 14:30:29');
SELECT TIMESTAMPDIFF(year,'2006-01-10 14:30:28','2007-01-10 14:30:27');
SELECT TIMESTAMPDIFF(year,'2006-01-10 14:30:28','2007-01-10 14:30:28');
SELECT TIMESTAMPDIFF(year,'2006-01-10 14:30:28','2007-01-10 14:30:29');
SELECT TIMESTAMPDIFF(year,'2006-01-10 14:30:28','2008-01-10 14:30:27');
SELECT TIMESTAMPDIFF(year,'2006-01-10 14:30:28','2008-01-10 14:30:28');
SELECT TIMESTAMPDIFF(year,'2006-01-10 14:30:28','2008-01-10 14:30:29');
# end of bug
select date_add(time,INTERVAL 1 SECOND) from t1;
drop table t1;