Fix for Bug #15722 Engine_condition_pushdown fails when using blobs(text)

mysql-test/r/ndb_condition_pushdown.result

@@ -1766,5 +1766,21 @@ select * from t3 left join t4 on t4.attr2 = t3.attr2 where t4.attr1 > 1 and t4.a
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
 1	SIMPLE	t3	ALL	NULL	NULL	NULL	NULL	6	Using temporary; Using filesort
 1	SIMPLE	t4	ALL	NULL	NULL	NULL	NULL	6	Using where
+create table t5 (a int primary key auto_increment, b tinytext not null) 
+engine = ndb;
+insert into t5 (b) values ('jonas'), ('jensing'), ('johan');
+set engine_condition_pushdown = off;
+select * from t5 where b like '%jo%' order by a;
+a	b
+1	jonas
+3	johan
+set engine_condition_pushdown = on;
+explain select * from t5 where b like '%jo%';
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	SIMPLE	t5	ALL	NULL	NULL	NULL	NULL	3	Using where
+select * from t5 where b like '%jo%' order by a;
+a	b
+1	jonas
+3	johan
 set engine_condition_pushdown = @old_ecpd;
-DROP TABLE t1,t2,t3,t4;
+DROP TABLE t1,t2,t3,t4,t5;

mysql-test/t/ndb_condition_pushdown.test

@@ -1639,5 +1639,15 @@ select * from t2 where (attr1 < 2) = (attr2 < 2) order by pk1;
 explain
 select * from t3 left join t4 on t4.attr2 = t3.attr2 where t4.attr1 > 1 and t4.attr3 < 5 or t4.attr1 is null order by t4.pk1;
 
+# bug#15722
+create table t5 (a int primary key auto_increment, b tinytext not null) 
+engine = ndb;
+insert into t5 (b) values ('jonas'), ('jensing'), ('johan');
+set engine_condition_pushdown = off;
+select * from t5 where b like '%jo%' order by a;
+set engine_condition_pushdown = on;
+explain select * from t5 where b like '%jo%';
+select * from t5 where b like '%jo%' order by a;
+
 set engine_condition_pushdown = @old_ecpd;
-DROP TABLE t1,t2,t3,t4;
+DROP TABLE t1,t2,t3,t4,t5;

sql/ha_ndbcluster.cc

@@ -6587,7 +6587,10 @@ void ndb_serialize_cond(const Item *item, void *arg)
                      context->expecting_field_result(INT_RESULT))
                   : true)) &&
                 // Bit fields no yet supported in scan filter
-                type != MYSQL_TYPE_BIT)
+                type != MYSQL_TYPE_BIT &&
+                // No BLOB support in scan filter
+                type != MYSQL_TYPE_TINY_BLOB &&
+                type != MYSQL_TYPE_BLOB)
             {
               const NDBCOL *col= tab->getColumn(field->field_name);
               DBUG_ASSERT(col);