# 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.
#
set testdir [file dirname $argv0]
source $testdir/tester.tcl
# 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);
}
} {}
do_test descidx2-1.2 {
execsql {
CREATE INDEX i2 ON t1(a DESC);
}
} {}
# 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 ORDER BY b ASC;
}
} {4 5 6}
do_test descidx2-2.2 {
execsql {
SELECT a FROM t1 WHERE b>3 AND b<7 ORDER BY a ASC;
}
} {4 5 6}
do_test descidx2-2.3 {
execsql {
SELECT b FROM t1 WHERE a>=3 AND a<7 ORDER BY b ASC;
}
} {3 4 5 6}
do_test descidx2-2.4 {
execsql {
SELECT b FROM t1 WHERE a>3 AND a<=7 ORDER BY b ASC;
}
} {4 5 6 7}
do_test descidx2-2.5 {
execsql {
SELECT b FROM t1 WHERE a>=3 AND a<=7 ORDER BY b ASC;
}
} {3 4 5 6 7}
do_test descidx2-2.6 {
execsql {
SELECT a FROM t1 WHERE b>=3 AND b<=7 ORDER BY a ASC;
}
} {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