Add test with no latch at alL

mysql-test/suite/oqgraph/basic.result

@@ -83,6 +83,20 @@ latch	origid	destid	weight	seq	linkid
 # Expect no result, because of NULL latch
 SELECT * FROM graph WHERE latch=NULL and destid=2 and origid=1;
 latch	origid	destid	weight	seq	linkid
+# With no latch, original data, filtered by destid, etc if present
+SELECT * FROM graph;
+latch	origid	destid	weight	seq	linkid
+NULL	1	2	1	NULL	NULL
+NULL	2	1	1	NULL	NULL
+NULL	1	3	1	NULL	NULL
+NULL	3	1	1	NULL	NULL
+NULL	3	4	1	NULL	NULL
+NULL	4	3	1	NULL	NULL
+NULL	5	6	1	NULL	NULL
+NULL	6	5	1	NULL	NULL
+SELECT * FROM graph WHERE destid=2 and origid=1;
+latch	origid	destid	weight	seq	linkid
+NULL	1	2	1	NULL	NULL
 SELECT * FROM graph WHERE latch = 'breadth_first' AND origid = 1 AND (weight = 1 OR weight = 2);
 latch	origid	destid	weight	seq	linkid
 breadth_first	1	NULL	2	4	4

mysql-test/suite/oqgraph/basic.test

@@ -90,6 +90,10 @@ SELECT * FROM graph WHERE latch=0 and destid=2 and origid=1;
 --echo # Expect no result, because of NULL latch
 SELECT * FROM graph WHERE latch=NULL and destid=2 and origid=1;
 
+--echo # With no latch, original data, filtered by destid, etc if present
+SELECT * FROM graph;
+SELECT * FROM graph WHERE destid=2 and origid=1;
+
 SELECT * FROM graph WHERE latch = 'breadth_first' AND origid = 1 AND (weight = 1 OR weight = 2);
 
 --echo # Now we add a connection from 4->6