manual merge

sql/field.cc:
  Auto merged
sql/item.cc:
  Auto merged
sql/item_cmpfunc.cc:
  Auto merged
sql/item_cmpfunc.h:
  Auto merged
sql/item_func.cc:
  Auto merged
sql/mysqld.cc:
  Auto merged
sql/opt_range.cc:
  Auto merged
sql/sql_parse.cc:
  Auto merged
sql/sql_select.cc:
  Auto merged
sql/sql_view.cc:
  Auto merged
strings/ctype-utf8.c:
  Auto merged

1 files changed, 21 insertions, 0 deletions

diff --git a/mysql-test/r/group_by.result b/mysql-test/r/group_by.result
index 28fa101f45f..34a9cc4221f 100644
--- a/mysql-test/r/group_by.result
+++ b/mysql-test/r/group_by.result
@@ -731,6 +731,27 @@ n
 Warnings:
 Warning	1052	Column 'n' in group statement is ambiguous
 DROP TABLE t1;
+create table t1 (c1 char(3), c2 char(3));
+create table t2 (c3 char(3), c4 char(3));
+insert into t1 values ('aaa', 'bb1'), ('aaa', 'bb2');
+insert into t2 values ('aaa', 'bb1'), ('aaa', 'bb2');
+select t1.c1 as c2 from t1, t2 where t1.c2 = t2.c4
+group by c2;
+c2
+aaa
+aaa
+Warnings:
+Warning	1052	Column 'c2' in group statement is ambiguous
+show warnings;
+Level	Code	Message
+Warning	1052	Column 'c2' in group statement is ambiguous
+select t1.c1 as c2 from t1, t2 where t1.c2 = t2.c4
+group by t1.c1;
+c2
+aaa
+show warnings;
+Level	Code	Message
+drop table t1, t2;
 CREATE TABLE t1 (a  int, b int);
 INSERT INTO t1 VALUES (1,2), (1,3);
 SELECT a, b FROM t1 GROUP BY 'const';