# 2005 July 28
#
# 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 file is testing the use of indices in WHERE clauses
# when the WHERE clause contains the BETWEEN operator.
#
# $Id: between.test,v 1.2 2006/01/17 09:35:02 danielk1977 Exp $
set testdir [file dirname $argv0]
source $testdir/tester.tcl
# Build some test data
#
do_test between-1.0 {
execsql {
BEGIN;
CREATE TABLE t1(w int, x int, y int, z int);
}
for {set i 1} {$i<=100} {incr i} {
set w $i
set x [expr {int(log($i)/log(2))}]
set y [expr {$i*$i + 2*$i + 1}]
set z [expr {$x+$y}]
ifcapable tclvar {
# Random unplanned test of the $varname variable syntax.
execsql {INSERT INTO t1 VALUES($::w,$::x,$::y,$::z)}
} else {
# If the $varname syntax is not available, use the regular variable
# declaration syntax.
execsql {INSERT INTO t1 VALUES(:w,:x,:y,:z)}
}
}
execsql {
CREATE UNIQUE INDEX i1w ON t1(w);
CREATE INDEX i1xy ON t1(x,y);
CREATE INDEX i1zyx ON t1(z,y,x);
COMMIT;
}
} {}
# This procedure executes the SQL. Then it appends to the result the
# "sort" or "nosort" keyword depending on whether or not any sorting
# is done. Then it appends the names of the table and index used.
#
proc queryplan {sql} {
set ::sqlite_sort_count 0
set data [execsql $sql]
if {$::sqlite_sort_count} {set x sort} {set x nosort}
lappend data $x
set eqp [execsql "EXPLAIN QUERY PLAN $sql"]
# puts eqp=$eqp
foreach {a b c x} $eqp {
if {[regexp { TABLE (\w+ AS )?(\w+) USING.* INDEX (\w+)\y} \
$x all as tab idx]} {
lappend data $tab $idx
} elseif {[regexp { TABLE (\w+ AS )?(\w+)\y} $x all as tab]} {
lappend data $tab *
}
}
return $data
}
do_test between-1.1.1 {
queryplan {
SELECT * FROM t1 WHERE w BETWEEN 5 AND 6 ORDER BY +w
}
} {5 2 36 38 6 2 49 51 sort t1 i1w}
do_test between-1.1.2 {
queryplan {
SELECT * FROM t1 WHERE +w BETWEEN 5 AND 6 ORDER BY +w
}
} {5 2 36 38 6 2 49 51 sort t1 *}
do_test between-1.2.1 {
queryplan {
SELECT * FROM t1 WHERE w BETWEEN 5 AND 65-y ORDER BY +w
}
} {5 2 36 38 6 2 49 51 sort t1 i1w}
do_test between-1.2.2 {
queryplan {
SELECT * FROM t1 WHERE +w BETWEEN 5 AND 65-y ORDER BY +w
}
} {5 2 36 38 6 2 49 51 sort t1 *}
do_test between-1.3.1 {
queryplan {
SELECT * FROM t1 WHERE w BETWEEN 41-y AND 6 ORDER BY +w
}
} {5 2 36 38 6 2 49 51 sort t1 i1w}
do_test between-1.3.2 {
queryplan {
SELECT * FROM t1 WHERE +w BETWEEN 41-y AND 6 ORDER BY +w
}
} {5 2 36 38 6 2 49 51 sort t1 *}
do_test between-1.4 {
queryplan {
SELECT * FROM t1 WHERE w BETWEEN 41-y AND 65-y ORDER BY +w
}
} {5 2 36 38 6 2 49 51 sort t1 *}
do_test between-1.5.1 {
queryplan {
SELECT * FROM t1 WHERE 26 BETWEEN y AND z ORDER BY +w
}
} {4 2 25 27 sort t1 i1zyx}
do_test between-1.5.2 {
queryplan {
SELECT * FROM t1 WHERE 26 BETWEEN +y AND z ORDER BY +w
}
} {4 2 25 27 sort t1 i1zyx}
do_test between-1.5.3 {
queryplan {
SELECT * FROM t1 WHERE 26 BETWEEN y AND +z ORDER BY +w
}
} {4 2 25 27 sort t1 *}
#-------------------------------------------------------------------------
reset_db
do_execsql_test between-2.0 {
CREATE TABLE t1(x TEXT, y TEXT COLLATE nocase);
INSERT INTO t1 VALUES('0', 'abc');
}
foreach {tn expr res} {
1 "x BETWEEN 1 AND '5'" 0
2 "x COLLATE binary BETWEEN 1 AND '5'" 0
3 "x COLLATE nocase BETWEEN 1 AND '5'" 0
4 "y BETWEEN 'A' AND 'B'" 1
5 "y COLLATE nocase BETWEEN 'A' AND 'B'" 1
6 "y COLLATE binary BETWEEN 'A' AND 'B'" 0
7 "(y COLLATE binary) BETWEEN 'A' AND 'B'" 0
} {
set sql "SELECT $expr FROM t1"
do_execsql_test between-2.1.$tn $sql $res
}
finish_test