Bug#20922 mysql removes a name of first column in a table

0xFF is internal separator for SET|ENUM names. 
If this symbol is present in SET|ENUM names then we replace it with 
','(deprecated symbol for SET|ENUM names) during frm creation
and restore to 0xFF during frm opening


mysql-test/r/type_enum.result:
  Bug#20922 mysql removes a name of first column in a table
  test case
mysql-test/t/type_enum.test:
  Bug#20922 mysql removes a name of first column in a table
  test case
sql/table.cc:
  Bug#20922 mysql removes a name of first column in a table
  Replace all ',' symbols with NAMES_SEP_CHAR in interval names.
sql/unireg.cc:
  Bug#20922 mysql removes a name of first column in a table
  if NAMES_SEP_CHAR symbols are present in interval name
  then replace all NAMES_SEP_CHAR symbols with ','

1 files changed, 9 insertions, 0 deletions

diff --git a/mysql-test/r/type_enum.result b/mysql-test/r/type_enum.result
index ab3c441a7e2..0fe3f674fba 100644
--- a/mysql-test/r/type_enum.result
+++ b/mysql-test/r/type_enum.result
@@ -1745,3 +1745,12 @@ create table t1 (a set('x','y') default 'x');
 alter table t1 alter a set default 'z';
 ERROR 42000: Invalid default value for 'a'
 drop table t1;
+create table t1 (f1 int);
+alter table t1 add f2 enum(0xFFFF);
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `f1` int(11) default NULL,
+  `f2` enum('ÿÿ') default NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+drop table t1;