sqlite/test/where8m.test
danielk1977 1d46146b58 Attempt to optimize virtual table queries with 'OR' expressions in the WHERE clause. (CVS 6527)
FossilOrigin-Name: f61e4cd93682fd98bea2a71d346f9eaa68454390
2009-04-21 09:02:45 +00:00

59 lines
1.6 KiB
Plaintext

# 2008 December 23
#
# 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
# is testing of where.c. More specifically, the focus is the optimization
# of WHERE clauses that feature the OR operator.
#
# $Id: where8m.test,v 1.2 2009/04/21 09:02:47 danielk1977 Exp $
set testdir [file dirname $argv0]
source $testdir/tester.tcl
source $testdir/malloc_common.tcl
do_malloc_test where8m-1 -sqlprep {
CREATE TABLE t1(a, b, c);
CREATE INDEX i1 ON t1(a);
CREATE INDEX i2 ON t1(b);
} -sqlbody {
SELECT c FROM t1
WHERE
a = 2 OR b = 'three' OR a = 4 OR b = 'five' OR a = 6 OR
b = 'seven' OR a = 8 OR b = 'nine' OR a = 10
ORDER BY rowid;
SELECT c FROM t1 WHERE
a = 1 OR a = 2 OR a = 3 OR a = 4 OR a = 5 OR a = 6;
SELECT c FROM t1 WHERE
a BETWEEN 1 AND 3 AND b < 5 AND b > 2 AND c = 4;
}
do_malloc_test where8m-2 -tclprep {
db eval {
BEGIN;
CREATE TABLE t1(a, b, c);
CREATE INDEX i1 ON t1(a);
CREATE INDEX i2 ON t1(b);
}
for {set i 0} {$i < 1000} {incr i} {
set ii [expr $i*$i]
set iii [expr $i*$i]
db eval { INSERT INTO t1 VALUES($i, $ii, $iii) }
}
db eval COMMIT
} -sqlbody {
SELECT count(*) FROM t1 WHERE a BETWEEN 5 AND 995 OR b BETWEEN 5 AND 900000;
}
finish_test