Return an error when an xBestIndex() method indicates that it intends to use the value of an unusable constraint. Related to #2998. (CVS 4867)

FossilOrigin-Name: ffd470279540b1b8e3fdce6eb14001bae489b16d

test/vtab6.test

@@ -14,7 +14,7 @@
 # virtual tables. The test cases in this file are copied from the file
 # join.test, and some of the comments still reflect that.
 #
-# $Id: vtab6.test,v 1.2 2006/06/28 18:18:10 drh Exp $
+# $Id: vtab6.test,v 1.3 2008/03/17 09:36:45 danielk1977 Exp $
 
 set testdir [file dirname $argv0]
 source $testdir/tester.tcl
@@ -454,4 +454,122 @@ do_test vtab6-10.1 {
 } {}
 } ;# ifcapable subquery
 
+do_test vtab6-11.1.0 {
+  execsql {
+    CREATE TABLE ab_r(a, b);
+    CREATE TABLE bc_r(b, c);
+
+    CREATE VIRTUAL TABLE ab USING echo(ab_r); 
+    CREATE VIRTUAL TABLE bc USING echo(bc_r); 
+
+    INSERT INTO ab VALUES(1, 2);
+    INSERT INTO bc VALUES(2, 3);
+  }
+} {}
+
+do_test vtab6-11.1.1 {
+  execsql {
+    SELECT a, b, c FROM ab NATURAL JOIN bc;
+  }
+} {1 2 3}
+do_test vtab6-11.1.2 {
+  execsql {
+    SELECT a, b, c FROM bc NATURAL JOIN ab;
+  }
+} {1 2 3}
+
+set ::echo_module_cost 1.0
+
+do_test vtab6-11.1.3 {
+  execsql {
+    SELECT a, b, c FROM ab NATURAL JOIN bc;
+  }
+} {1 2 3}
+do_test vtab6-11.1.4 {
+  execsql {
+    SELECT a, b, c FROM bc NATURAL JOIN ab;
+  }
+} {1 2 3}
+
+
+do_test vtab6-11.2.0 {
+  execsql {
+    CREATE INDEX ab_i ON ab_r(b);
+  }
+} {}
+
+unset ::echo_module_cost
+
+do_test vtab6-11.2.1 {
+  execsql {
+    SELECT a, b, c FROM ab NATURAL JOIN bc;
+  }
+} {1 2 3}
+do_test vtab6-11.2.2 {
+  execsql {
+    SELECT a, b, c FROM bc NATURAL JOIN ab;
+  }
+} {1 2 3}
+
+set ::echo_module_cost 1.0
+
+do_test vtab6-11.2.3 {
+  execsql {
+    SELECT a, b, c FROM ab NATURAL JOIN bc;
+  }
+} {1 2 3}
+do_test vtab6-11.2.4 {
+  execsql {
+    SELECT a, b, c FROM bc NATURAL JOIN ab;
+  }
+} {1 2 3}
+
+unset ::echo_module_cost
+db close
+sqlite3 db test.db
+register_echo_module [sqlite3_connection_pointer db]
+
+do_test vtab6-11.3.1 {
+  execsql {
+    SELECT a, b, c FROM ab NATURAL JOIN bc;
+  }
+} {1 2 3}
+
+do_test vtab6-11.3.2 {
+  execsql {
+    SELECT a, b, c FROM bc NATURAL JOIN ab;
+  }
+} {1 2 3}
+
+set ::echo_module_cost 1.0
+
+do_test vtab6-11.3.3 {
+  execsql {
+    SELECT a, b, c FROM ab NATURAL JOIN bc;
+  }
+} {1 2 3}
+do_test vtab6-11.3.4 {
+  execsql {
+    SELECT a, b, c FROM bc NATURAL JOIN ab;
+  }
+} {1 2 3}
+
+unset ::echo_module_cost
+
+set ::echo_module_ignore_usable 1
+db cache flush
+
+do_test vtab6-11.4.1 {
+  catchsql {
+    SELECT a, b, c FROM ab NATURAL JOIN bc;
+  }
+} {1 {table ab: xBestIndex returned an invalid plan}}
+do_test vtab6-11.4.2 {
+  catchsql {
+    SELECT a, b, c FROM bc NATURAL JOIN ab;
+  }
+} {1 {table ab: xBestIndex returned an invalid plan}}
+
+unset ::echo_module_ignore_usable
+
 finish_test