Regression test for #1196027

mysql-test/suite/oqgraph/regression_1196027.result

+DROP TABLE IF EXISTS graph_base;
+DROP TABLE IF EXISTS graph;
+CREATE TABLE graph_base (
+from_id INT UNSIGNED NOT NULL,
+to_id INT UNSIGNED NOT NULL,
+PRIMARY KEY (from_id,to_id),
+INDEX (to_id)
+) ENGINE=MyISAM;
+CREATE TABLE graph (
+latch   VARCHAR(32) NULL,
+origid  BIGINT    UNSIGNED NULL,
+destid  BIGINT    UNSIGNED NULL,
+weight  DOUBLE    NULL,
+seq     BIGINT    UNSIGNED NULL,
+linkid  BIGINT    UNSIGNED NULL,
+KEY (latch, origid, destid) USING HASH,
+KEY (latch, destid, origid) USING HASH
+) ENGINE=OQGRAPH DATA_TABLE='graph_base' ORIGID='from_id', DESTID='to_id';
+INSERT INTO graph_base(from_id, to_id) VALUES (1,2), (2,1);
+SELECT * FROM graph WHERE latch = 'breadth_first' AND destid = 1;
+latch	origid	destid	weight	seq	linkid
+breadth_first	NULL	1	1	2	2
+breadth_first	NULL	1	0	1	1
+SELECT * FROM graph WHERE latch = 'breadth_first' AND destid = 2;
+latch	origid	destid	weight	seq	linkid
+breadth_first	NULL	2	1	2	1
+breadth_first	NULL	2	0	1	2
+SELECT * FROM graph WHERE latch = 'breadth_first' AND origid = 1;
+latch	origid	destid	weight	seq	linkid
+breadth_first	1	NULL	1	2	2
+breadth_first	1	NULL	0	1	1
+SELECT * FROM graph WHERE latch = 'breadth_first' AND origid = 2;
+latch	origid	destid	weight	seq	linkid
+breadth_first	2	NULL	1	2	1
+breadth_first	2	NULL	0	1	2
+SELECT * FROM graph WHERE latch = '2' AND destid = 1;
+latch	origid	destid	weight	seq	linkid
+2	NULL	1	1	2	2
+2	NULL	1	0	1	1
+SELECT * FROM graph WHERE latch = '2' AND destid = 2;
+latch	origid	destid	weight	seq	linkid
+2	NULL	2	1	2	1
+2	NULL	2	0	1	2
+SELECT * FROM graph WHERE latch = '2' AND origid = 1;
+latch	origid	destid	weight	seq	linkid
+2	1	NULL	1	2	2
+2	1	NULL	0	1	1
+SELECT * FROM graph WHERE latch = '2' AND origid = 2;
+latch	origid	destid	weight	seq	linkid
+2	2	NULL	1	2	1
+2	2	NULL	0	1	2
+DELETE FROM graph_base;
+FLUSH TABLES;
+TRUNCATE TABLE graph_base;
+DROP TABLE graph_base;
+DROP TABLE graph;

mysql-test/suite/oqgraph/regression_1196027.test

+# Regression test for https://bugs.launchpad.net/oqgraph/+bug/1196027
+#-- These were returning NULL which is incorrect
+#-- https://bugs.launchpad.net/oqgraph/+bug/1196027
+--disable_warnings
+DROP TABLE IF EXISTS graph_base;
+DROP TABLE IF EXISTS graph;
+--enable_warnings
+
+# Create the backing store
+CREATE TABLE graph_base (
+    from_id INT UNSIGNED NOT NULL,
+    to_id INT UNSIGNED NOT NULL,
+    PRIMARY KEY (from_id,to_id),
+    INDEX (to_id)
+  ) ENGINE=MyISAM;
+
+
+CREATE TABLE graph (
+    latch   VARCHAR(32) NULL,
+    origid  BIGINT    UNSIGNED NULL,
+    destid  BIGINT    UNSIGNED NULL,
+    weight  DOUBLE    NULL,
+    seq     BIGINT    UNSIGNED NULL,
+    linkid  BIGINT    UNSIGNED NULL,
+    KEY (latch, origid, destid) USING HASH,
+    KEY (latch, destid, origid) USING HASH
+  ) ENGINE=OQGRAPH DATA_TABLE='graph_base' ORIGID='from_id', DESTID='to_id';
+
+
+INSERT INTO graph_base(from_id, to_id) VALUES (1,2), (2,1);
+
+# All the following should return no result because no vertex 666 exists in the graph
+
+SELECT * FROM graph WHERE latch = 'breadth_first' AND destid = 1;
+SELECT * FROM graph WHERE latch = 'breadth_first' AND destid = 2;
+SELECT * FROM graph WHERE latch = 'breadth_first' AND origid = 1;
+SELECT * FROM graph WHERE latch = 'breadth_first' AND origid = 2;
+
+SELECT * FROM graph WHERE latch = '2' AND destid = 1;
+SELECT * FROM graph WHERE latch = '2' AND destid = 2;
+SELECT * FROM graph WHERE latch = '2' AND origid = 1;
+SELECT * FROM graph WHERE latch = '2' AND origid = 2;
+
+
+DELETE FROM graph_base;
+FLUSH TABLES;
+TRUNCATE TABLE graph_base;
+
+DROP TABLE graph_base;
+DROP TABLE graph;
+