1 # 2007 Sep 12 2 # 3 # The author disclaims copyright to this source code. In place of 4 # a legal notice, here is a blessing: 5 # 6 # May you do good and not evil. 7 # May you find forgiveness for yourself and forgive others. 8 # May you share freely, never taking more than you give. 9 # 10 #*********************************************************************** 11 # 12 # This file is to test that ticket #2643 has been fixed. 13 # 14 # $Id: tkt2643.test,v 1.1 2007/09/13 17:54:41 drh Exp $ 15 # 16 17 # The problem in ticket #2643 has to do with the query optimizer 18 # making bad assumptions about index cost when data from ANALYZE 19 # is available. 20 21 set testdir [file dirname $argv0] 22 source $testdir/tester.tcl 23 24 do_test tkt2643-1.1 { 25 execsql { 26 CREATE TABLE t1(a INTEGER PRIMARY KEY, b UNIQUE, c); 27 INSERT INTO t1 VALUES(1,2,3); 28 INSERT INTO t1 VALUES(2,3,4); 29 ANALYZE; 30 } 31 db close 32 sqlite3 db test.db 33 execsql { 34 CREATE INDEX i1 ON t1(c); 35 SELECT count(*) FROM t1 WHERE c IS NOT NULL 36 } 37 } {2} 38 39 finish_test 40
