diff --git a/test/people_fjoin_personroom.query b/test/people_fjoin_personroom.query
new file mode 100644
index 0000000..f2fada2
--- /dev/null
+++ b/test/people_fjoin_personroom.query
@@ -0,0 +1 @@
+people⧓person_room
diff --git a/test/people_fjoin_personroom.result b/test/people_fjoin_personroom.result
new file mode 100644
index 0000000..2501391
--- /dev/null
+++ b/test/people_fjoin_personroom.result
@@ -0,0 +1,9 @@
+id,name,chief,age,room
+0,jack,0,22,1
+1,carl,0,20,4
+2,john,1,30,2
+3,dean,1,33,2
+4,eve,0,25,5
+5,duncan,4,30,1
+6,paul,4,30,5
+7,alia,1,28,1
diff --git a/test/people_join_personroom.query b/test/people_join_personroom.query
new file mode 100644
index 0000000..4c43b19
--- /dev/null
+++ b/test/people_join_personroom.query
@@ -0,0 +1 @@
+people⋈person_room
diff --git a/test/people_join_personroom.result b/test/people_join_personroom.result
new file mode 100644
index 0000000..2501391
--- /dev/null
+++ b/test/people_join_personroom.result
@@ -0,0 +1,9 @@
+id,name,chief,age,room
+0,jack,0,22,1
+1,carl,0,20,4
+2,john,1,30,2
+3,dean,1,33,2
+4,eve,0,25,5
+5,duncan,4,30,1
+6,paul,4,30,5
+7,alia,1,28,1
diff --git a/test/people_join_rooms.query b/test/people_join_rooms.query
new file mode 100644
index 0000000..41492ae
--- /dev/null
+++ b/test/people_join_rooms.query
@@ -0,0 +1 @@
+people⧓person_room ⧓ rooms
diff --git a/test/people_join_rooms.result b/test/people_join_rooms.result
new file mode 100644
index 0000000..108efc3
--- /dev/null
+++ b/test/people_join_rooms.result
@@ -0,0 +1,13 @@
+id,name,chief,age,room,phone
+0,jack,0,22,1,1516
+1,carl,0,20,4,1041
+2,john,1,30,2,1617
+3,dean,1,33,2,1617
+4,eve,0,25,5,9212
+5,duncan,4,30,1,1516
+6,paul,4,30,5,9212
+7,alia,1,28,1,1516
+---,---,---,---,"0","1515"
+---,---,---,---,"3","1601"
+---,---,---,---,"6","1424"
+---,---,---,---,"7","1294"
diff --git a/test/select_people_join_rooms.query b/test/select_people_join_rooms.query
new file mode 100644
index 0000000..2336072
--- /dev/null
+++ b/test/select_people_join_rooms.query
@@ -0,0 +1 @@
+σid=='---' (people⧓person_room ⧓ rooms)
diff --git a/test/select_people_join_rooms.result b/test/select_people_join_rooms.result
new file mode 100644
index 0000000..82eb158
--- /dev/null
+++ b/test/select_people_join_rooms.result
@@ -0,0 +1,5 @@
+id,name,chief,age,room,phone
+---,---,---,---,"0","1515"
+---,---,---,---,"3","1601"
+---,---,---,---,"6","1424"
+---,---,---,---,"7","1294"