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MDEV-4289 Assertion `0' fails in make_sortkey with GROUP_CONCAT, MAKE_SET, GROUP BY

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Item_func_make_set wasn't taking into account the first argument when
calculating maybe_null.

sql/item_strfunc.cc:
  rewrite Item_func_make_set, removing separate storage of the first argument
sql/item_strfunc.h:
  rewrite Item_func_make_set, removing separate storage of the first argument
This commit is contained in:
Sergei Golubchik
2013-03-18 10:35:03 +01:00
parent 511b943263
commit a4a18e0cbb
5 changed files with 24 additions and 85 deletions
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7
mysql-test/r/func_str.result
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@ -2646,4 +2646,11 @@ NULL
SELECT LPAD('hi', DAY(FROM_UNIXTIME(-1)),'?');
LPAD('hi', DAY(FROM_UNIXTIME(-1)),'?')
NULL
create table t1 (i int);
insert into t1 values (null),(8);
select group_concat( i ), make_set( i, 'a', 'b' ) field from t1 group by field;
group_concat( i ) field
NULL NULL
8
drop table t1;
End of 5.1 tests