add cos file (fix build)

uwdb · Jul 23, 2017 · e0c7d28 · e0c7d28
1 parent 8589838
commit e0c7d28
Showing 1 changed file with 12 additions and 0 deletions.
diff --git a/examples/sqlrewrites/unionEmpty.cos b/examples/sqlrewrites/unionEmpty.cos
@@ -0,0 +1,12 @@
+schema s1(x:int);
+
+table a(s1);            -- define table a using schema s1
+
+query q1                -- define query q1 on tables a and b
+`select * from a x UNION ALL
+ select * from a x where false`;
+
+query q2                -- define query q2 likewise
+`select * from a x`;
+
+verify q1 q2;           -- does q1 equal to q2?