Added checks for NOT NULL for all fields in UNIQUE INDEX (USING HASH)

mysql-test/r/ndb_index_unique.result

@@ -87,6 +87,13 @@ a	b	c
 7	8	3
 8	2	3
 drop table t2;
+CREATE TABLE t2 (
+a int unsigned NOT NULL PRIMARY KEY,
+b int unsigned not null,
+c int unsigned,
+UNIQUE USING HASH (b, c)	
+) engine=ndbcluster;
+ERROR 42000: Column 'c' is used with UNIQUE or INDEX but is not defined as NOT NULL
 CREATE TABLE t3 (
 a int unsigned NOT NULL,
 b int unsigned not null,

mysql-test/t/ndb_index_unique.test

@@ -58,6 +58,14 @@ select * from t2 order by a;
 
 drop table t2;
 
+-- error 1121
+CREATE TABLE t2 (
+  a int unsigned NOT NULL PRIMARY KEY,
+  b int unsigned not null,
+  c int unsigned,
+  UNIQUE USING HASH (b, c)	
+) engine=ndbcluster;
+
 #
 # Show use of PRIMARY KEY USING HASH indexes 
 #

sql/ha_ndbcluster.cc

@@ -796,7 +796,8 @@ int ha_ndbcluster::build_index_list(TABLE *tab, enum ILBP phase)
 	  error= create_unique_index(unique_index_name, key_info);
 	break;
       case UNIQUE_INDEX:
-	error= create_unique_index(unique_index_name, key_info);
+	if (!(error= check_index_fields_not_null(i)))
+	  error= create_unique_index(unique_index_name, key_info);
 	break;
       case ORDERED_INDEX:
 	error= create_ordered_index(index_name, key_info);
@@ -848,6 +849,26 @@ NDB_INDEX_TYPE ha_ndbcluster::get_index_type_from_table(uint inx) const
 	    ORDERED_INDEX);
 } 
 
+int ha_ndbcluster::check_index_fields_not_null(uint inx)
+{
+  KEY* key_info= table->key_info + inx;
+  KEY_PART_INFO* key_part= key_info->key_part;
+  KEY_PART_INFO* end= key_part+key_info->key_parts;
+  DBUG_ENTER("check_index_fields_not_null");
+  
+  for (; key_part != end; key_part++) 
+    {
+      Field* field= key_part->field;
+      if (field->maybe_null())
+      {
+	my_printf_error(ER_NULL_COLUMN_IN_INDEX,ER(ER_NULL_COLUMN_IN_INDEX),
+			MYF(0),field->field_name);
+	DBUG_RETURN(ER_NULL_COLUMN_IN_INDEX);
+      }
+    }
+  
+  DBUG_RETURN(0);
+}
 
 void ha_ndbcluster::release_metadata()
 {

sql/ha_ndbcluster.h

@@ -160,7 +160,8 @@ class ha_ndbcluster: public handler
   void release_metadata();
   NDB_INDEX_TYPE get_index_type(uint idx_no) const;
   NDB_INDEX_TYPE get_index_type_from_table(uint index_no) const;
-  
+  int check_index_fields_not_null(uint index_no);
+
   int pk_read(const byte *key, uint key_len, byte *buf);
   int complemented_pk_read(const byte *old_data, byte *new_data);
   int peek_row();