| # 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 |
