# 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 of this file is testing the multi-index OR clause optimizer.
#
# $Id: where7.test,v 1.1 2008/12/23 23:56:22 drh Exp $
set testdir [file dirname $argv0]
source $testdir/tester.tcl
ifcapable !or_opt {
finish_test
return
}
# Evaluate SQL. Return the result set followed by the
# and the number of full-scan steps.
#
proc count_steps {sql} {
set r [db eval $sql]
lappend r scan [db status step]
}
# Build some test data
#
do_test where7-1.1 {
execsql {
CREATE TABLE t1(a INTEGER PRIMARY KEY,b,c,d);
INSERT INTO t1 VALUES(1,2,3,4);
INSERT INTO t1 VALUES(2,3,4,5);
INSERT INTO t1 VALUES(3,4,6,8);
INSERT INTO t1 VALUES(4,5,10,15);
INSERT INTO t1 VALUES(5,10,100,1000);
CREATE INDEX t1b ON t1(b);
CREATE INDEX t1c ON t1(c);
SELECT * FROM t1;
}
} {1 2 3 4 2 3 4 5 3 4 6 8 4 5 10 15 5 10 100 1000}
do_test where7-1.2 {
count_steps {
SELECT a FROM t1 WHERE b=3 OR c=6
}
} {2 3 scan 0}
do_test where7-1.3 {
count_steps {
SELECT a FROM t1 WHERE b=3 OR +c=6
}
} {2 3 scan 4}
do_test where7-1.4 {
count_steps {
SELECT a FROM t1 WHERE +b=3 OR c=6
}
} {2 3 scan 4}
do_test where7-1.5 {
count_steps {
SELECT a FROM t1 WHERE 3=b OR c=6
}
} {2 3 scan 0}
do_test where7-1.6 {
count_steps {
SELECT a FROM t1 WHERE (3=b OR c=6) AND +a>0
}
} {2 3 scan 0}
do_test where7-1.7 {
count_steps {
SELECT a FROM t1 WHERE (b=3 OR c>10)
}
} {2 5 scan 0}
do_test where7-1.8 {
count_steps {
SELECT a FROM t1 WHERE (b=3 OR c>=10)
}
} {2 4 5 scan 0}
do_test where7-1.9 {
count_steps {
SELECT a FROM t1 WHERE (b=3 OR c>=10 OR c=4)
}
} {2 4 5 scan 0}
do_test where7-1.10 {
count_steps {
SELECT a FROM t1 WHERE (b=3 OR c>=10 OR c=4 OR b>10)
}
} {2 4 5 scan 0}
finish_test