Bug #21072 Duplicate key error in NDB references wrong key: Added new...

 Bug #21072  Duplicate key error in NDB references wrong key: Added new printout for duplicate key error when key is unknown

mysql-test/r/ndb_charset.result

@@ -112,9 +112,9 @@ unique key(a)
 ) engine=ndb;
 insert into t1 values(1, 'aAa');
 insert into t1 values(2, 'aaa');
-ERROR 23000: Duplicate entry '2' for key 'PRIMARY'
+ERROR 23000: Duplicate entry '' for key '*UNKNOWN*'
 insert into t1 values(3, 'AAA');
-ERROR 23000: Duplicate entry '3' for key 'PRIMARY'
+ERROR 23000: Duplicate entry '' for key '*UNKNOWN*'
 select * from t1 order by p;
 p	a
 1	aAa
@@ -138,9 +138,9 @@ unique key(a)
 ) engine=ndb;
 insert into t1 values (1,'A'),(2,'b '),(3,'C  '),(4,'d      '),(5,'E'),(6,'f');
 insert into t1 values(99,'b');
-ERROR 23000: Duplicate entry '99' for key 'PRIMARY'
+ERROR 23000: Duplicate entry '' for key '*UNKNOWN*'
 insert into t1 values(99,'a         ');
-ERROR 23000: Duplicate entry '99' for key 'PRIMARY'
+ERROR 23000: Duplicate entry '' for key '*UNKNOWN*'
 select a,length(a) from t1 order by a;
 a	length(a)
 A	1

mysql-test/r/ndb_index_unique.result

@@ -22,7 +22,7 @@ select * from t1 where b = 4 order by a;
 a	b	c
 3	4	6
 insert into t1 values(8, 2, 3);
-ERROR 23000: Duplicate entry '8' for key 'PRIMARY'
+ERROR 23000: Duplicate entry '' for key '*UNKNOWN*'
 select * from t1 order by a;
 a	b	c
 1	2	3
@@ -93,7 +93,7 @@ a	b	c
 1	1	1
 4	4	NULL
 insert into t1 values(5,1,1);
-ERROR 23000: Duplicate entry '5' for key 'PRIMARY'
+ERROR 23000: Duplicate entry '' for key '*UNKNOWN*'
 drop table t1;
 CREATE TABLE t2 (
 a int unsigned NOT NULL PRIMARY KEY,
@@ -116,7 +116,7 @@ select * from t2 where b = 4 order by a;
 a	b	c
 3	4	6
 insert into t2 values(8, 2, 3);
-ERROR 23000: Duplicate entry '8' for key 'PRIMARY'
+ERROR 23000: Duplicate entry '' for key '*UNKNOWN*'
 select * from t2 order by a;
 a	b	c
 1	2	3
@@ -181,7 +181,7 @@ pk	a
 3	NULL
 4	4
 insert into t1 values (5,0);
-ERROR 23000: Duplicate entry '5' for key 'PRIMARY'
+ERROR 23000: Duplicate entry '' for key '*UNKNOWN*'
 select * from t1 order by pk;
 pk	a
 -1	NULL
@@ -214,7 +214,7 @@ pk	a	b	c
 0	NULL	18	NULL
 1	3	19	abc
 insert into t2 values(2,3,19,'abc');
-ERROR 23000: Duplicate entry '2' for key 'PRIMARY'
+ERROR 23000: Duplicate entry '' for key '*UNKNOWN*'
 select * from t2 order by pk;
 pk	a	b	c
 -1	1	17	NULL
@@ -634,7 +634,7 @@ create table t1 (a int primary key, b varchar(1000) not null, unique key (b))
 engine=ndb charset=utf8;
 insert into t1 values (1, repeat(_utf8 0xe288ab6474, 200));
 insert into t1 values (2, repeat(_utf8 0xe288ab6474, 200));
-ERROR 23000: Duplicate entry '2' for key 'PRIMARY'
+ERROR 23000: Duplicate entry '' for key '*UNKNOWN*'
 select a, sha1(b) from t1;
 a	sha1(b)
 1	08f5d02c8b8bc244f275bdfc22c42c5cab0d9d7d

mysql-test/r/ndb_update.result

@@ -18,7 +18,7 @@ pk1	b	c
 2	2	2
 4	1	1
 UPDATE t1 set pk1 = 1, c = 2 where pk1 = 4;
-ERROR 23000: Duplicate entry '1' for key 'PRIMARY'
+ERROR 23000: Duplicate entry '' for key '*UNKNOWN*'
 select * from t1 order by pk1;
 pk1	b	c
 0	0	0

sql/handler.cc

@@ -2031,6 +2031,17 @@ void handler::print_keydup_error(uint key_nr, const char *msg)
   /* Write the duplicated key in the error message */
   char key[MAX_KEY_LENGTH];
   String str(key,sizeof(key),system_charset_info);
+
+  if (key_nr == MAX_KEY)
+  {
+    /* Key is unknown */
+    str.length(0);
+    key_nr= -1;
+    my_printf_error(ER_DUP_ENTRY, msg,
+		    MYF(0), str.c_ptr(), "*UNKNOWN*");
+  }
+  else
+  {
     /* Table is opened and defined at this point */
     key_unpack(&str,table,(uint) key_nr);
     uint max_length=MYSQL_ERRMSG_SIZE-(uint) strlen(msg);
@@ -2041,6 +2052,7 @@ void handler::print_keydup_error(uint key_nr, const char *msg)
     }
     my_printf_error(ER_DUP_ENTRY, msg,
 		    MYF(0), str.c_ptr(), table->key_info[key_nr].name);
+  }
 }