Fix an adverse interaction between the IS NOT NULL optimization (available

only with SQLITE_ENABLE_STAT3) and the transitive constraint processing.
Fix for ticket [d805526eae253]

FossilOrigin-Name: 3b30b75b342bb6b424ad2bf7cd841b2c88bdad44

test/transitive1.test

@@ -47,4 +47,59 @@ do_execsql_test transitive1-220 {
   SELECT * FROM t2 WHERE a=b AND c=b AND c<=20 ORDER BY +a;
 } {20 20 20 100 100 100}
 
+# Test cases for ticket [[d805526eae253103] 2013-07-08
+# "Incorrect join result or assertion fault due to transitive constraints"
+#
+do_execsql_test transitive1-300 {
+  CREATE TABLE t301(w INTEGER PRIMARY KEY, x);
+  CREATE TABLE t302(y INTEGER UNIQUE, z);
+  INSERT INTO t301 VALUES(1,2),(3,4),(5,6);
+  INSERT INTO t302 VALUES(1,3),(3,6),(5,7);
+  SELECT *
+    FROM t301 CROSS JOIN t302
+   WHERE w=y AND y IS NOT NULL
+   ORDER BY +w;
+} {1 2 1 3 3 4 3 6 5 6 5 7}
+do_execsql_test transitive1-301 {
+  SELECT *
+    FROM t301 CROSS JOIN t302
+   WHERE w=y AND y IS NOT NULL
+   ORDER BY w;
+} {1 2 1 3 3 4 3 6 5 6 5 7}
+do_execsql_test transitive1-310 {
+  SELECT *
+    FROM t301 CROSS JOIN t302 ON w=y
+   WHERE y>1
+   ORDER BY +w
+} {3 4 3 6 5 6 5 7}
+do_execsql_test transitive1-311 {
+  SELECT *
+    FROM t301 CROSS JOIN t302 ON w=y
+   WHERE y>1
+   ORDER BY w
+} {3 4 3 6 5 6 5 7}
+do_execsql_test transitive1-312 {
+  SELECT *
+    FROM t301 CROSS JOIN t302 ON w=y
+   WHERE y>1
+   ORDER BY w DESC
+} {5 6 5 7 3 4 3 6}
+do_execsql_test transitive1-320 {
+  SELECT *
+    FROM t301 CROSS JOIN t302 ON w=y
+   WHERE y BETWEEN 2 AND 4;
+} {3 4 3 6}
+do_execsql_test transitive1-331 {
+  SELECT *
+    FROM t301 CROSS JOIN t302 ON w=y
+   WHERE y BETWEEN 1 AND 4
+   ORDER BY w;
+} {1 2 1 3 3 4 3 6}
+do_execsql_test transitive1-332 {
+  SELECT *
+    FROM t301 CROSS JOIN t302 ON w=y
+   WHERE y BETWEEN 1 AND 4
+   ORDER BY w DESC;
+} {3 4 3 6 1 2 1 3}
+
 finish_test