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| 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 |
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