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+# 2007 Sep 12
+#
+# 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 is to test that ticket #2643 has been fixed.
+#
+# $Id: tkt2643.test,v 1.1 2007/09/13 17:54:41 drh Exp $
+#
+
+# The problem in ticket #2643 has to do with the query optimizer
+# making bad assumptions about index cost when data from ANALYZE
+# is available.
+
+set testdir [file dirname $argv0]
+source $testdir/tester.tcl
+
+do_test tkt2643-1.1 {
+ execsql {
+ CREATE TABLE t1(a INTEGER PRIMARY KEY, b UNIQUE, c);
+ INSERT INTO t1 VALUES(1,2,3);
+ INSERT INTO t1 VALUES(2,3,4);
+ ANALYZE;
+ }
+ db close
+ sqlite3 db test.db
+ execsql {
+ CREATE INDEX i1 ON t1(c);
+ SELECT count(*) FROM t1 WHERE c IS NOT NULL
+ }
+} {2}
+
+finish_test