155 lines
4.0 KiB
Plaintext
155 lines
4.0 KiB
Plaintext
# 2006 January 02
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#
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# The author disclaims copyright to this source code. In place of
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# a legal notice, here is a blessing:
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#
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# May you do good and not evil.
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# May you find forgiveness for yourself and forgive others.
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# May you share freely, never taking more than you give.
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#
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#*************************************************************************
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# This file implements regression tests for SQLite library. The
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# focus of this script is descending indices.
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#
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# $Id: descidx3.test,v 1.6 2008/03/19 00:21:31 drh Exp $
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#
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set testdir [file dirname $argv0]
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source $testdir/tester.tcl
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# Do not use a codec for tests in this file, as the database file is
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# manipulated directly using tcl scripts (using the [hexio_write] command).
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#
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do_not_use_codec
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ifcapable !bloblit {
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finish_test
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return
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}
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db eval {PRAGMA legacy_file_format=OFF}
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# This procedure sets the value of the file-format in file 'test.db'
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# to $newval. Also, the schema cookie is incremented.
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#
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proc set_file_format {newval} {
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hexio_write test.db 44 [hexio_render_int32 $newval]
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set schemacookie [hexio_get_int [hexio_read test.db 40 4]]
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incr schemacookie
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hexio_write test.db 40 [hexio_render_int32 $schemacookie]
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return {}
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}
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# This procedure returns the value of the file-format in file 'test.db'.
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#
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proc get_file_format {{fname test.db}} {
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return [hexio_get_int [hexio_read $fname 44 4]]
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}
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# Verify that the file format starts as 4.
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#
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do_test descidx3-1.1 {
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execsql {
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CREATE TABLE t1(i INTEGER PRIMARY KEY,a,b,c,d);
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CREATE INDEX t1i1 ON t1(a DESC, b ASC, c DESC);
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CREATE INDEX t1i2 ON t1(b DESC, c ASC, d DESC);
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}
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get_file_format
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} {4}
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# Put some information in the table and verify that the descending
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# index actually works.
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#
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do_test descidx3-2.1 {
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execsql {
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INSERT INTO t1 VALUES(1, NULL, NULL, NULL, NULL);
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INSERT INTO t1 VALUES(2, 2, 2, 2, 2);
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INSERT INTO t1 VALUES(3, 3, 3, 3, 3);
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INSERT INTO t1 VALUES(4, 2.5, 2.5, 2.5, 2.5);
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INSERT INTO t1 VALUES(5, -5, -5, -5, -5);
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INSERT INTO t1 VALUES(6, 'six', 'six', 'six', 'six');
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INSERT INTO t1 VALUES(7, x'77', x'77', x'77', x'77');
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INSERT INTO t1 VALUES(8, 'eight', 'eight', 'eight', 'eight');
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INSERT INTO t1 VALUES(9, x'7979', x'7979', x'7979', x'7979');
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SELECT count(*) FROM t1;
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}
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} 9
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do_test descidx3-2.2 {
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execsql {
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SELECT i FROM t1 ORDER BY a;
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}
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} {1 5 2 4 3 8 6 7 9}
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do_test descidx3-2.3 {
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execsql {
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SELECT i FROM t1 ORDER BY a DESC;
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}
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} {9 7 6 8 3 4 2 5 1}
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# The "natural" order for the index is decreasing
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do_test descidx3-2.4 {
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execsql {
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SELECT i FROM t1 WHERE a<=x'7979';
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}
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} {9 7 6 8 3 4 2 5}
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do_test descidx3-2.5 {
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execsql {
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SELECT i FROM t1 WHERE a>-99;
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}
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} {9 7 6 8 3 4 2 5}
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# Even when all values of t1.a are the same, sorting by A returns
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# the rows in reverse order because this the natural order of the
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# index.
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#
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do_test descidx3-3.1 {
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execsql {
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UPDATE t1 SET a=1;
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SELECT i FROM t1 ORDER BY a;
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}
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} {9 7 6 8 3 4 2 5 1}
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do_test descidx3-3.2 {
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execsql {
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SELECT i FROM t1 WHERE a=1 AND b>0 AND b<'zzz'
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}
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} {2 4 3 8 6}
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do_test descidx3-3.3 {
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execsql {
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SELECT i FROM t1 WHERE b>0 AND b<'zzz'
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}
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} {6 8 3 4 2}
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do_test descidx3-3.4 {
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execsql {
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SELECT i FROM t1 WHERE a=1 AND b>-9999 AND b<x'ffffffff'
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}
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} {5 2 4 3 8 6 7 9}
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do_test descidx3-3.5 {
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execsql {
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SELECT i FROM t1 WHERE b>-9999 AND b<x'ffffffff'
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}
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} {9 7 6 8 3 4 2 5}
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ifcapable subquery {
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# If the subquery capability is not compiled in to the binary, then
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# the IN(...) operator is not available. Hence these tests cannot be
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# run.
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do_test descidx3-4.1 {
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lsort [execsql {
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UPDATE t1 SET a=2 WHERE i<6;
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SELECT i FROM t1 WHERE a IN (1,2) AND b>0 AND b<'zzz';
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}]
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} {2 3 4 6 8}
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do_test descidx3-4.2 {
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execsql {
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UPDATE t1 SET a=1;
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SELECT i FROM t1 WHERE a IN (1,2) AND b>0 AND b<'zzz';
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}
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} {2 4 3 8 6}
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do_test descidx3-4.3 {
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execsql {
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UPDATE t1 SET b=2;
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SELECT i FROM t1 WHERE a IN (1,2) AND b>0 AND b<'zzz';
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}
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} {9 7 6 8 3 4 2 5 1}
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}
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finish_test
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