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Fix for BUG#7425.

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The reported problems were due to two completely unrelated omissions.
1) The file sort procedure didn't correctly create the sort key in
   make_sortkey when the sortkey was an unsigned integer.
2) The name resolution procedure for column references inside a HAVING
   clause did not propagate the unsigned_flag of the resolved references.
This patch corrects both problems.


mysql-test/r/select.result:
  Added test result for BUG#7425.
mysql-test/t/select.test:
  Added test for BUG#7425.
sql/filesort.cc:
  Take into account whether 'item' represents a signed or an unsigned integer.
sql/item.cc:
  Once an Item_ref is resolved, propagate the unsigned_flag to the resolved item.
This commit is contained in:
unknown
2005-03-09 16:51:03 +02:00
parent ae81d53048
commit 146df30f79
4 changed files with 43 additions and 2 deletions
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11
mysql-test/t/select.test
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@ -1964,3 +1964,14 @@ SELECT * FROM t1 WHERE city LIKE '%london%' AND city='London';
DROP TABLE t1;
#
# Bug#7425 inconsistent sort order on unsigned columns result of substraction
#
create table t1 (a int(11) unsigned, b int(11) unsigned);
insert into t1 values (1,0), (1,1), (1,2);
select a-b from t1 order by 1;
select a-b , (a-b < 0) from t1 order by 1;
select a-b as d, (a-b >= 0), b from t1 group by b having d >= 0;
select cast((a - b) as unsigned) from t1 order by 1;
drop table t1;