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