# 2005 December 21
#
# 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: descidx2.test,v 1.5 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
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 descidx2-1.1 {
execsql {
CREATE TABLE t1(a,b);
CREATE INDEX i1 ON t1(b ASC);
}
get_file_format
} {4}
do_test descidx2-1.2 {
execsql {
CREATE INDEX i2 ON t1(a DESC);
}
get_file_format
} {4}
# Before adding any information to the database, set the file format
# back to three. Then close and reopen the database. With the file
# format set to three, SQLite should ignore the DESC argument on the
# index.
#
do_test descidx2-2.0 {
set_file_format 3
db close
sqlite3 db test.db
get_file_format
} {3}
# Put some information in the table and verify that the DESC
# on the index is ignored.
#
do_test descidx2-2.1 {
execsql {
INSERT INTO t1 VALUES(1,1);
INSERT INTO t1 VALUES(2,2);
INSERT INTO t1 SELECT a+2, a+2 FROM t1;
INSERT INTO t1 SELECT a+4, a+4 FROM t1;
SELECT b FROM t1 WHERE a>3 AND a<7;
}
} {4 5 6}
do_test descidx2-2.2 {
execsql {
SELECT a FROM t1 WHERE b>3 AND b<7;
}
} {4 5 6}
do_test descidx2-2.3 {
execsql {
SELECT b FROM t1 WHERE a>=3 AND a<7;
}
} {3 4 5 6}
do_test descidx2-2.4 {
execsql {
SELECT b FROM t1 WHERE a>3 AND a<=7;
}
} {4 5 6 7}
do_test descidx2-2.5 {
execsql {
SELECT b FROM t1 WHERE a>=3 AND a<=7;
}
} {3 4 5 6 7}
do_test descidx2-2.6 {
execsql {
SELECT a FROM t1 WHERE b>=3 AND b<=7;
}
} {3 4 5 6 7}
# This procedure executes the SQL. Then it checks to see if the OP_Sort
# opcode was executed. If an OP_Sort did occur, then "sort" is appended
# to the result. If no OP_Sort happened, then "nosort" is appended.
#
# This procedure is used to check to make sure sorting is or is not
# occurring as expected.
#
proc cksort {sql} {
set ::sqlite_sort_count 0
set data [execsql $sql]
if {$::sqlite_sort_count} {set x sort} {set x nosort}
lappend data $x
return $data
}
# Test sorting using a descending index.
#
do_test descidx2-3.1 {
cksort {SELECT a FROM t1 ORDER BY a}
} {1 2 3 4 5 6 7 8 nosort}
do_test descidx2-3.2 {
cksort {SELECT a FROM t1 ORDER BY a ASC}
} {1 2 3 4 5 6 7 8 nosort}
do_test descidx2-3.3 {
cksort {SELECT a FROM t1 ORDER BY a DESC}
} {8 7 6 5 4 3 2 1 nosort}
do_test descidx2-3.4 {
cksort {SELECT b FROM t1 ORDER BY a}
} {1 2 3 4 5 6 7 8 nosort}
do_test descidx2-3.5 {
cksort {SELECT b FROM t1 ORDER BY a ASC}
} {1 2 3 4 5 6 7 8 nosort}
do_test descidx2-3.6 {
cksort {SELECT b FROM t1 ORDER BY a DESC}
} {8 7 6 5 4 3 2 1 nosort}
do_test descidx2-3.7 {
cksort {SELECT a FROM t1 ORDER BY b}
} {1 2 3 4 5 6 7 8 nosort}
do_test descidx2-3.8 {
cksort {SELECT a FROM t1 ORDER BY b ASC}
} {1 2 3 4 5 6 7 8 nosort}
do_test descidx2-3.9 {
cksort {SELECT a FROM t1 ORDER BY b DESC}
} {8 7 6 5 4 3 2 1 nosort}
do_test descidx2-3.10 {
cksort {SELECT b FROM t1 ORDER BY b}
} {1 2 3 4 5 6 7 8 nosort}
do_test descidx2-3.11 {
cksort {SELECT b FROM t1 ORDER BY b ASC}
} {1 2 3 4 5 6 7 8 nosort}
do_test descidx2-3.12 {
cksort {SELECT b FROM t1 ORDER BY b DESC}
} {8 7 6 5 4 3 2 1 nosort}
do_test descidx2-3.21 {
cksort {SELECT a FROM t1 WHERE a>3 AND a<8 ORDER BY a}
} {4 5 6 7 nosort}
do_test descidx2-3.22 {
cksort {SELECT a FROM t1 WHERE a>3 AND a<8 ORDER BY a ASC}
} {4 5 6 7 nosort}
do_test descidx2-3.23 {
cksort {SELECT a FROM t1 WHERE a>3 AND a<8 ORDER BY a DESC}
} {7 6 5 4 nosort}
do_test descidx2-3.24 {
cksort {SELECT b FROM t1 WHERE a>3 AND a<8 ORDER BY a}
} {4 5 6 7 nosort}
do_test descidx2-3.25 {
cksort {SELECT b FROM t1 WHERE a>3 AND a<8 ORDER BY a ASC}
} {4 5 6 7 nosort}
do_test descidx2-3.26 {
cksort {SELECT b FROM t1 WHERE a>3 AND a<8 ORDER BY a DESC}
} {7 6 5 4 nosort}
finish_test