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Fix for bug #8464 (AVG returns incorrect result)

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Actually problem was not in AVG function, but in SUM before the AVG in the
query.


mysql-test/r/func_group.result:
  appropriate test result
mysql-test/t/func_group.test:
  test case added
strings/decimal.c:
  in this case we also need to make fsizes equal
This commit is contained in:
unknown 2005-03-07 16:08:06 +04:00
commit 07d5ddb755
3 changed files with 24 additions and 0 deletions
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10
mysql-test/r/func_group.result
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@ -832,3 +832,13 @@ id stddev_pop(value1) var_pop(value1) stddev_samp(value1) var_samp(value1)
1 0.816497 0.666667 1.000000 1.000000
2 1.118034 1.250000 1.290994 1.666667
DROP TABLE t1;
CREATE TABLE t1 (col1 decimal(16,12));
INSERT INTO t1 VALUES (-5.00000000001),(-5.00000000002),(-5.00000000003),(-5.00000000000),(-5.00000000001),(-5.00000000002);
insert into t1 select * from t1;
select col1,count(col1),sum(col1),avg(col1) from t1 group by col1;
col1 count(col1) sum(col1) avg(col1)
-5.000000000030 2 -10.000000000060 -5.0000000000300000
-5.000000000020 4 -20.000000000080 -5.0000000000200000
-5.000000000010 4 -20.000000000040 -5.0000000000100000
-5.000000000000 2 -10.000000000000 -5.0000000000000000
DROP TABLE t1;