SQL_BIG_RESULT used": now BIT_AND() always returns 18446744073709551615
if no rows were found.
This patch also fixes bug #1972: "BIT_AND() and BIT_OR() still return
a *signed* 64bit value"
by MAX/MIN in some cases:
SELECT coercibility(max(s1)) from t1;
Subselect collation and derivation was not processed
correctly:
create table a select (select s1 from t1);
select * from t1 where s1 = (select s2 from t1);
Added new tests for better coverage of
min/max optimization code.
func_group.test:
Added new tests for better coverage of
min/max optimization code.
opt_sum.cc:
Fixed wrong previous manual merge.
Fixed bugs concerning fields used in min/max
functions for which there are conditions of
the form field=const.
Added ALL as parameter option for all group functions.
Make join handling uniform. This allows us to use ',', JOIN and INNER JOIN the same way.
Sort NULL last if DESC is used (ANSI SQL 99 requirement)
MIN(key_column) could in some cases return NULL on a column with NULL and other values.
MIN(key_column) and MAX(key_column) could in some cases return wrong values when used in OUTER JOIN.
