Bug#8101 unique indexes which attribute are _not_ specified in the order of...

Bug#8101  unique indexes which attribute are _not_ specified in the order of the table does not work

mysql-test/r/ndb_index_unique.result

@@ -612,3 +612,17 @@ a	b	c
 3	NULL	NULL
 4	4	NULL
 drop table t1, t8;
+create table t1(
+id integer not null auto_increment,
+month integer not null,
+year integer not null,
+code varchar( 2) not null,
+primary key ( id),
+unique idx_t1( month, code, year)
+) engine=ndb;
+INSERT INTO t1 (month, year, code) VALUES (4,2004,'12');
+INSERT INTO t1 (month, year, code) VALUES (5,2004,'12');
+select * from t1 where code = '12' and month = 4 and year = 2004 ;
+id	month	year	code
+1	4	2004	12
+drop table t1;

mysql-test/t/ndb_index_unique.test

@@ -286,3 +286,24 @@ select * from t8 order by a;
 select * from t1 order by a;
 drop table t1, t8;
 
+###############################
+# Bug 8101
+#
+# Unique index not specified in the same order as in table
+#
+
+create table t1(
+        id integer not null auto_increment,
+        month integer not null,
+        year integer not null,
+        code varchar( 2) not null,
+        primary key ( id),
+	unique idx_t1( month, code, year)
+) engine=ndb;
+
+INSERT INTO t1 (month, year, code) VALUES (4,2004,'12');
+INSERT INTO t1 (month, year, code) VALUES (5,2004,'12');
+
+select * from t1 where code = '12' and month = 4 and year = 2004 ;
+
+drop table t1;

sql/ha_ndbcluster.cc

@@ -765,6 +765,42 @@ int ha_ndbcluster::get_metadata(const char *path)
   DBUG_RETURN(build_index_list(table, ILBP_OPEN));  
 }
 
+static int fix_unique_index_attr_order(NDB_INDEX_DATA &data,
+				       const NDBINDEX *index,
+				       KEY *key_info)
+{
+  DBUG_ENTER("fix_unique_index_attr_order");
+  unsigned sz= index->getNoOfIndexColumns();
+
+  if (data.unique_index_attrid_map)
+    my_free((char*)data.unique_index_attrid_map, MYF(0));
+  data.unique_index_attrid_map= (unsigned char*)my_malloc(sz,MYF(MY_WME));
+
+  KEY_PART_INFO* key_part= key_info->key_part;
+  KEY_PART_INFO* end= key_part+key_info->key_parts;
+  DBUG_ASSERT(key_info->key_parts == sz);
+  for (unsigned i= 0; key_part != end; key_part++, i++) 
+  {
+    const char *field_name= key_part->field->field_name;
+    unsigned name_sz= strlen(field_name);
+    if (name_sz >= NDB_MAX_ATTR_NAME_SIZE)
+      name_sz= NDB_MAX_ATTR_NAME_SIZE-1;
+#ifndef DBUG_OFF
+   data.unique_index_attrid_map[i]= 255;
+#endif
+    for (unsigned j= 0; j < sz; j++)
+    {
+      const NdbDictionary::Column *c= index->getColumn(j);
+      if (strncmp(field_name, c->getName(), name_sz) == 0)
+      {
+	data.unique_index_attrid_map[i]= j;
+	break;
+      }
+    }
+    DBUG_ASSERT(data.unique_index_attrid_map[i] != 255);
+  }
+  DBUG_RETURN(0);
+}
 
 int ha_ndbcluster::build_index_list(TABLE *tab, enum ILBP phase)
 {
@@ -839,6 +875,7 @@ int ha_ndbcluster::build_index_list(TABLE *tab, enum ILBP phase)
       const NDBINDEX *index= dict->getIndex(unique_index_name, m_tabname);
       if (!index) DBUG_RETURN(1);
       m_index[i].unique_index= (void *) index;
+      error= fix_unique_index_attr_order(m_index[i], index, key_info);
     }
   }
   
@@ -897,6 +934,11 @@ void ha_ndbcluster::release_metadata()
   {
     m_index[i].unique_index= NULL;      
     m_index[i].index= NULL;      
+    if (m_index[i].unique_index_attrid_map)
+    {
+      my_free((char *)m_index[i].unique_index_attrid_map, MYF(0));
+      m_index[i].unique_index_attrid_map= NULL;
+    }
   }
 
   DBUG_VOID_RETURN;
@@ -1209,7 +1251,8 @@ int ha_ndbcluster::unique_index_read(const byte *key,
 
   for (i= 0; key_part != end; key_part++, i++) 
   {
-    if (set_ndb_key(op, key_part->field, i, 
+    if (set_ndb_key(op, key_part->field,
+		    m_index[active_index].unique_index_attrid_map[i], 
 		    key_part->null_bit ? key_ptr + 1 : key_ptr))
       ERR_RETURN(trans->getNdbError());
     key_ptr+= key_part->store_length;
@@ -3839,6 +3882,7 @@ ha_ndbcluster::ha_ndbcluster(TABLE *table_arg):
     m_index[i].type= UNDEFINED_INDEX;
     m_index[i].unique_index= NULL;
     m_index[i].index= NULL;
+    m_index[i].unique_index_attrid_map= NULL;
   }
 
   DBUG_VOID_RETURN;

sql/ha_ndbcluster.h

@@ -52,6 +52,7 @@ typedef struct ndb_index_data {
   NDB_INDEX_TYPE type;
   void *index;
   void *unique_index;
+  unsigned char *unique_index_attrid_map;
 } NDB_INDEX_DATA;
 
 typedef struct st_ndbcluster_share {