Imported Upstream version 2.0.3

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+# 2008 September 1
+#
+# The author disclaims copyright to this source code.  In place of
+# a legal notice, here is a blessing:
+#
+#    May you do good and not evil.
+#    May you find forgiveness for yourself and forgive others.
+#    May you share freely, never taking more than you give.
+#
+#***********************************************************************
+#
+# This file implements regression tests for SQLite library.  The
+# focus of this file is testing the fix for ticket #3346
+#
+# $Id: tkt3346.test,v 1.3 2008/12/09 13:12:57 drh Exp $
+
+set testdir [file dirname $argv0]
+source $testdir/tester.tcl
+
+do_test tkt3346-1.1 {
+  db eval {
+   CREATE TABLE t1(a,b);
+   INSERT INTO t1 VALUES(2,'bob');
+   INSERT INTO t1 VALUES(1,'alice');
+   INSERT INTO t1 VALUES(3,'claire');
+   SELECT *, ( SELECT y FROM (SELECT x.b='alice' AS y) )
+     FROM ( SELECT * FROM t1 ) AS x;
+  }
+} {2 bob 0 1 alice 1 3 claire 0}
+do_test tkt3346-1.2 {
+  db eval {
+    SELECT b FROM (SELECT * FROM t1) AS x
+     WHERE (SELECT y FROM (SELECT x.b='alice' AS y))=0
+  }
+} {bob claire}
+do_test tkt3346-1.3 {
+  db eval {
+    SELECT b FROM (SELECT * FROM t1 ORDER BY a) AS x
+     WHERE (SELECT y FROM (SELECT a||b y FROM t1 WHERE t1.b=x.b))=(x.a||x.b)
+  }
+} {alice bob claire}
+do_test tkt3346-1.4 {
+  db eval {
+    SELECT b FROM (SELECT * FROM t1 ORDER BY a) AS x
+     WHERE (SELECT y FROM (SELECT a||b y FROM t1 WHERE t1.b=x.b))=('2'||x.b)
+  }
+} {bob}
+
+# Ticket #3530
+#
+# As shown by ticket #3346 above (see also ticket #3298) it is important
+# that a subquery in the result-set be able to look up through multiple
+# FROM levels in order to view tables in the FROM clause at the top level.
+#
+# But ticket #3530 shows us that a subquery in the FROM clause should not
+# be able to look up to higher levels:
+#
+do_test tkt3346-2.1 {
+  catchsql {
+    CREATE TABLE t2(a);
+    INSERT INTO t2 VALUES(1);
+    
+    SELECT * FROM (SELECT * FROM t1 WHERE 1=x.a) AS x;
+  }
+} {1 {no such column: x.a}}
+
+finish_test