sl@0: # 2008 August 26
sl@0: #
sl@0: # The author disclaims copyright to this source code.  In place of
sl@0: # a legal notice, here is a blessing:
sl@0: #
sl@0: #    May you do good and not evil.
sl@0: #    May you find forgiveness for yourself and forgive others.
sl@0: #    May you share freely, never taking more than you give.
sl@0: #
sl@0: #***********************************************************************
sl@0: #
sl@0: # This file implements regression tests for SQLite library. 
sl@0: # Specifically, it tests that bug #3334 has been fixed by the
sl@0: # addition of restriction (19) to the subquery flattener optimization.
sl@0: #
sl@0: # $Id: tkt3334.test,v 1.1 2008/08/26 12:56:14 drh Exp $
sl@0: 
sl@0: 
sl@0: set testdir [file dirname $argv0]
sl@0: source $testdir/tester.tcl
sl@0: 
sl@0: do_test tkt3334-1.0 {
sl@0:   execsql {
sl@0:     CREATE TABLE t1(a,b);
sl@0:     INSERT INTO t1 VALUES(1,934);
sl@0:     INSERT INTO t1 VALUES(2,221);
sl@0:     INSERT INTO t1 VALUES(1,372);
sl@0:     INSERT INTO t1 VALUES(3,552);
sl@0:     INSERT INTO t1 VALUES(1,719);
sl@0:     INSERT INTO t1 VALUES(4,102);
sl@0:     SELECT * FROM t1 ORDER BY b;
sl@0:   }
sl@0: } {4 102 2 221 1 372 3 552 1 719 1 934}
sl@0: 
sl@0: do_test tkt3334-1.1 {
sl@0:   execsql {
sl@0:     SELECT a FROM (SELECT a FROM t1 ORDER BY b LIMIT 2) WHERE a=1;
sl@0:   }
sl@0: } {}
sl@0: do_test tkt3334-1.2 {
sl@0:   execsql {
sl@0:     SELECT count(*) FROM (SELECT a FROM t1 ORDER BY b LIMIT 2) WHERE a=1;
sl@0:   }
sl@0: } {0}
sl@0: do_test tkt3334-1.3 {
sl@0:   execsql {
sl@0:     SELECT a FROM (SELECT a FROM t1 ORDER BY b LIMIT 3) WHERE a=1;
sl@0:   }
sl@0: } {1}
sl@0: do_test tkt3334-1.4 {
sl@0:   execsql {
sl@0:     SELECT count(*) FROM (SELECT a FROM t1 ORDER BY b LIMIT 3) WHERE a=1;
sl@0:   }
sl@0: } {1}
sl@0: do_test tkt3334-1.5 {
sl@0:   execsql {
sl@0:     SELECT a FROM (SELECT a FROM t1 ORDER BY b LIMIT 99) WHERE a=1;
sl@0:   }
sl@0: } {1 1 1}
sl@0: do_test tkt3334-1.6 {
sl@0:   execsql {
sl@0:     SELECT count(*) FROM (SELECT a FROM t1 ORDER BY b LIMIT 99) WHERE a=1;
sl@0:   }
sl@0: } {3}
sl@0: do_test tkt3334-1.7 {
sl@0:   execsql {
sl@0:     SELECT a FROM (SELECT a FROM t1 ORDER BY b) WHERE a=1;
sl@0:   }
sl@0: } {1 1 1}
sl@0: do_test tkt3334-1.8 {
sl@0:   execsql {
sl@0:     SELECT count(*) FROM (SELECT a FROM t1 ORDER BY b) WHERE a=1;
sl@0:   }
sl@0: } {3}
sl@0: do_test tkt3334-1.9 {
sl@0:   execsql {
sl@0:     SELECT a FROM (SELECT a FROM t1) WHERE a=1;
sl@0:   }
sl@0: } {1 1 1}
sl@0: do_test tkt3334-1.10 {
sl@0:   execsql {
sl@0:     SELECT count(*) FROM (SELECT a FROM t1) WHERE a=1;
sl@0:   }
sl@0: } {3}