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Annotation of embedaddon/sqlite3/test/tkt2643.test, revision 1.1.1.1

1.1       misho       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