3 # The author disclaims copyright to this source code. In place of
4 # a legal notice, here is a blessing:
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.
10 #*************************************************************************
11 # This file implements regression tests for SQLite library. The
12 # focus of this script is descending indices.
14 # $Id: descidx3.test,v 1.6 2008/03/19 00:21:31 drh Exp $
17 set testdir [file dirname $argv0]
18 source $testdir/tester.tcl
20 # Do not use a codec for tests in this file, as the database file is
21 # manipulated directly using tcl scripts (using the [hexio_write] command).
29 db eval {PRAGMA legacy_file_format=OFF}
31 # This procedure sets the value of the file-format in file 'test.db'
32 # to $newval. Also, the schema cookie is incremented.
34 proc set_file_format {newval} {
35 hexio_write test.db 44 [hexio_render_int32 $newval]
36 set schemacookie [hexio_get_int [hexio_read test.db 40 4]]
38 hexio_write test.db 40 [hexio_render_int32 $schemacookie]
42 # This procedure returns the value of the file-format in file 'test.db'.
44 proc get_file_format {{fname test.db}} {
45 return [hexio_get_int [hexio_read $fname 44 4]]
48 # Verify that the file format starts as 4.
50 do_test descidx3-1.1 {
52 CREATE TABLE t1(i INTEGER PRIMARY KEY,a,b,c,d);
53 CREATE INDEX t1i1 ON t1(a DESC, b ASC, c DESC);
54 CREATE INDEX t1i2 ON t1(b DESC, c ASC, d DESC);
59 # Put some information in the table and verify that the descending
60 # index actually works.
62 do_test descidx3-2.1 {
64 INSERT INTO t1 VALUES(1, NULL, NULL, NULL, NULL);
65 INSERT INTO t1 VALUES(2, 2, 2, 2, 2);
66 INSERT INTO t1 VALUES(3, 3, 3, 3, 3);
67 INSERT INTO t1 VALUES(4, 2.5, 2.5, 2.5, 2.5);
68 INSERT INTO t1 VALUES(5, -5, -5, -5, -5);
69 INSERT INTO t1 VALUES(6, 'six', 'six', 'six', 'six');
70 INSERT INTO t1 VALUES(7, x'77', x'77', x'77', x'77');
71 INSERT INTO t1 VALUES(8, 'eight', 'eight', 'eight', 'eight');
72 INSERT INTO t1 VALUES(9, x'7979', x'7979', x'7979', x'7979');
73 SELECT count(*) FROM t1;
76 do_test descidx3-2.2 {
78 SELECT i FROM t1 ORDER BY a;
81 do_test descidx3-2.3 {
83 SELECT i FROM t1 ORDER BY a DESC;
87 # The "natural" order for the index is decreasing
88 do_test descidx3-2.4 {
90 SELECT i FROM t1 WHERE a<=x'7979';
93 do_test descidx3-2.5 {
95 SELECT i FROM t1 WHERE a>-99;
99 # Even when all values of t1.a are the same, sorting by A returns
100 # the rows in reverse order because this the natural order of the
103 do_test descidx3-3.1 {
106 SELECT i FROM t1 ORDER BY a;
108 } {9 7 6 8 3 4 2 5 1}
109 do_test descidx3-3.2 {
111 SELECT i FROM t1 WHERE a=1 AND b>0 AND b<'zzz'
114 do_test descidx3-3.3 {
116 SELECT i FROM t1 WHERE b>0 AND b<'zzz'
119 do_test descidx3-3.4 {
121 SELECT i FROM t1 WHERE a=1 AND b>-9999 AND b<x'ffffffff'
124 do_test descidx3-3.5 {
126 SELECT i FROM t1 WHERE b>-9999 AND b<x'ffffffff'
131 # If the subquery capability is not compiled in to the binary, then
132 # the IN(...) operator is not available. Hence these tests cannot be
134 do_test descidx3-4.1 {
136 UPDATE t1 SET a=2 WHERE i<6;
137 SELECT i FROM t1 WHERE a IN (1,2) AND b>0 AND b<'zzz';
140 do_test descidx3-4.2 {
143 SELECT i FROM t1 WHERE a IN (1,2) AND b>0 AND b<'zzz';
146 do_test descidx3-4.3 {
149 SELECT i FROM t1 WHERE a IN (1,2) AND b>0 AND b<'zzz';
151 } {9 7 6 8 3 4 2 5 1}