1# 2008 August 26
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 implements regression tests for SQLite library. 
13# Specifically, it tests that bug #3334 has been fixed by the
14# addition of restriction (19) to the subquery flattener optimization.
15#
16# $Id: tkt3334.test,v 1.1 2008/08/26 12:56:14 drh Exp $
17
18
19set testdir [file dirname $argv0]
20source $testdir/tester.tcl
21
22do_test tkt3334-1.0 {
23  execsql {
24    CREATE TABLE t1(a,b);
25    INSERT INTO t1 VALUES(1,934);
26    INSERT INTO t1 VALUES(2,221);
27    INSERT INTO t1 VALUES(1,372);
28    INSERT INTO t1 VALUES(3,552);
29    INSERT INTO t1 VALUES(1,719);
30    INSERT INTO t1 VALUES(4,102);
31    SELECT * FROM t1 ORDER BY b;
32  }
33} {4 102 2 221 1 372 3 552 1 719 1 934}
34
35do_test tkt3334-1.1 {
36  execsql {
37    SELECT a FROM (SELECT a FROM t1 ORDER BY b LIMIT 2) WHERE a=1;
38  }
39} {}
40do_test tkt3334-1.2 {
41  execsql {
42    SELECT count(*) FROM (SELECT a FROM t1 ORDER BY b LIMIT 2) WHERE a=1;
43  }
44} {0}
45do_test tkt3334-1.3 {
46  execsql {
47    SELECT a FROM (SELECT a FROM t1 ORDER BY b LIMIT 3) WHERE a=1;
48  }
49} {1}
50do_test tkt3334-1.4 {
51  execsql {
52    SELECT count(*) FROM (SELECT a FROM t1 ORDER BY b LIMIT 3) WHERE a=1;
53  }
54} {1}
55do_test tkt3334-1.5 {
56  execsql {
57    SELECT a FROM (SELECT a FROM t1 ORDER BY b LIMIT 99) WHERE a=1;
58  }
59} {1 1 1}
60do_test tkt3334-1.6 {
61  execsql {
62    SELECT count(*) FROM (SELECT a FROM t1 ORDER BY b LIMIT 99) WHERE a=1;
63  }
64} {3}
65do_test tkt3334-1.7 {
66  execsql {
67    SELECT a FROM (SELECT a FROM t1 ORDER BY b) WHERE a=1;
68  }
69} {1 1 1}
70do_test tkt3334-1.8 {
71  execsql {
72    SELECT count(*) FROM (SELECT a FROM t1 ORDER BY b) WHERE a=1;
73  }
74} {3}
75do_test tkt3334-1.9 {
76  execsql {
77    SELECT a FROM (SELECT a FROM t1) WHERE a=1;
78  }
79} {1 1 1}
80do_test tkt3334-1.10 {
81  execsql {
82    SELECT count(*) FROM (SELECT a FROM t1) WHERE a=1;
83  }
84} {3}
85