Merge with 3.23

innobase/btr/btr0btr.c:
  Auto merged
ltconfig:
  Auto merged
innobase/include/btr0btr.h:
  Auto merged
innobase/log/log0log.c:
  Auto merged
libmysql/Makefile.shared:
  Auto merged
man/isamlog.1:
  Auto merged
man/mysql.1:
  Auto merged
man/mysql_zap.1:
  Auto merged
man/isamchk.1:
  Auto merged
man/mysqlaccess.1:
  Auto merged
man/mysqladmin.1:
  Auto merged
man/mysqld_multi.1:
  Auto merged
man/mysqld.1:
  Auto merged
man/mysqld_safe.1:
  Auto merged
man/mysqldump.1:
  Auto merged
man/mysqlshow.1:
  Auto merged
man/replace.1:
  Auto merged
myisam/mi_unique.c:
  Auto merged
scripts/mysqld_safe.sh:
  Auto merged
sql/net_pkg.cc:
  Auto merged
sql/sql_table.cc:
  Auto merged
strings/Makefile.am:
  Auto merged
man/perror.1:
  Auto merged
Makefile.am:
  merge with 3.23
client/mysqltest.c:
  merge with 3.23
innobase/btr/btr0pcur.c:
  merge with 3.23 (use local file)
innobase/row/row0purge.c:
  merge with 3.23 (use local file)
scripts/mysql_fix_privilege_tables.sh:
  Merge with 3.23 (Apply debian patches)
sql/ha_innodb.cc:
  merge with 3.23 (use local file)
sql/mysqld.cc:
  Merge with 3.23 (use local file)
sql/net_serv.cc:
  Merge with 3.23 (use local file)
sql/sql_db.cc:
  Merge with 3.23 (use local file)

1 files changed, 11 insertions, 0 deletions

diff --git a/mysql-test/t/group_by.test b/mysql-test/t/group_by.test
index 328b696ac05..bc01577c249 100644
--- a/mysql-test/t/group_by.test
+++ b/mysql-test/t/group_by.test
@@ -354,3 +354,14 @@ m.c1id = c1.id AND c1.active = 'Yes' LEFT JOIN t3 AS c2 ON m.c2id =
 c2.id AND c2.active = 'Yes' WHERE m.pid=1  AND (c1.id IS NOT NULL OR c2.id IS 
 NOT NULL);
 drop table t1,t2,t3;
+
+#
+# Test bug in GROUP BY on BLOB that is NULL or empty
+#
+
+create table t1 (a blob null);
+insert into t1 values (NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(""),(""),(""),("b");
+select a,count(*) from t1 group by a;
+set option sql_big_tables=1;
+select a,count(*) from t1 group by a;
+drop table t1;