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# 2014-03-31
#
# 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.
#
#***********************************************************************
#
# Test cases for query planning decisions where one candidate index
# covers a proper superset of the WHERE clause terms of another
# candidate index.
#
set testdir [file dirname $argv0]
source $testdir/tester.tcl
do_execsql_test whereH-1.1 {
CREATE TABLE t1(a,b,c,d);
CREATE INDEX t1abc ON t1(a,b,c);
CREATE INDEX t1bc ON t1(b,c);
EXPLAIN QUERY PLAN
SELECT d FROM t1 WHERE a=? AND b=? AND c>=? ORDER BY c;
} {/INDEX t1abc /}
do_execsql_test whereH-1.2 {
EXPLAIN QUERY PLAN
SELECT d FROM t1 WHERE a=? AND b=? AND c>=? ORDER BY c;
} {~/TEMP B-TREE FOR ORDER BY/}
do_execsql_test whereH-2.1 {
DROP TABLE t1;
CREATE TABLE t1(a,b,c,d);
CREATE INDEX t1bc ON t1(b,c);
CREATE INDEX t1abc ON t1(a,b,c);
EXPLAIN QUERY PLAN
SELECT d FROM t1 WHERE a=? AND b=? AND c>=? ORDER BY c;
} {/INDEX t1abc /}
do_execsql_test whereH-2.2 {
EXPLAIN QUERY PLAN
SELECT d FROM t1 WHERE a=? AND b=? AND c>=? ORDER BY c;
} {~/TEMP B-TREE FOR ORDER BY/}
do_execsql_test whereH-3.1 {
DROP TABLE t1;
CREATE TABLE t1(a,b,c,d,e);
CREATE INDEX t1cd ON t1(c,d);
CREATE INDEX t1bcd ON t1(b,c,d);
CREATE INDEX t1abcd ON t1(a,b,c,d);
EXPLAIN QUERY PLAN
SELECT d FROM t1 WHERE a=? AND b=? AND c=? AND d>=? ORDER BY d;
} {/INDEX t1abcd /}
do_execsql_test whereH-3.2 {
EXPLAIN QUERY PLAN
SELECT d FROM t1 WHERE a=? AND b=? AND c=? AND d>=? ORDER BY d;
} {~/TEMP B-TREE FOR ORDER BY/}
do_execsql_test whereH-4.1 {
DROP TABLE t1;
CREATE TABLE t1(a,b,c,d,e);
CREATE INDEX t1cd ON t1(c,d);
CREATE INDEX t1abcd ON t1(a,b,c,d);
CREATE INDEX t1bcd ON t1(b,c,d);
EXPLAIN QUERY PLAN
SELECT d FROM t1 WHERE a=? AND b=? AND c=? AND d>=? ORDER BY d;
} {/INDEX t1abcd /}
do_execsql_test whereH-4.2 {
EXPLAIN QUERY PLAN
SELECT d FROM t1 WHERE a=? AND b=? AND c=? AND d>=? ORDER BY d;
} {~/TEMP B-TREE FOR ORDER BY/}
do_execsql_test whereH-5.1 {
DROP TABLE t1;
CREATE TABLE t1(a,b,c,d,e);
CREATE INDEX t1bcd ON t1(b,c,d);
CREATE INDEX t1cd ON t1(c,d);
CREATE INDEX t1abcd ON t1(a,b,c,d);
EXPLAIN QUERY PLAN
SELECT d FROM t1 WHERE a=? AND b=? AND c=? AND d>=? ORDER BY d;
} {/INDEX t1abcd /}
do_execsql_test whereH-5.2 {
EXPLAIN QUERY PLAN
SELECT d FROM t1 WHERE a=? AND b=? AND c=? AND d>=? ORDER BY d;
} {~/TEMP B-TREE FOR ORDER BY/}
do_execsql_test whereH-6.1 {
DROP TABLE t1;
CREATE TABLE t1(a,b,c,d,e);
CREATE INDEX t1bcd ON t1(b,c,d);
CREATE INDEX t1abcd ON t1(a,b,c,d);
CREATE INDEX t1cd ON t1(c,d);
EXPLAIN QUERY PLAN
SELECT d FROM t1 WHERE a=? AND b=? AND c=? AND d>=? ORDER BY d;
} {/INDEX t1abcd /}
do_execsql_test whereH-6.2 {
EXPLAIN QUERY PLAN
SELECT d FROM t1 WHERE a=? AND b=? AND c=? AND d>=? ORDER BY d;
} {~/TEMP B-TREE FOR ORDER BY/}
do_execsql_test whereH-7.1 {
DROP TABLE t1;
CREATE TABLE t1(a,b,c,d,e);
CREATE INDEX t1abcd ON t1(a,b,c,d);
CREATE INDEX t1bcd ON t1(b,c,d);
CREATE INDEX t1cd ON t1(c,d);
EXPLAIN QUERY PLAN
SELECT d FROM t1 WHERE a=? AND b=? AND c=? AND d>=? ORDER BY d;
} {/INDEX t1abcd /}
do_execsql_test whereH-7.2 {
EXPLAIN QUERY PLAN
SELECT d FROM t1 WHERE a=? AND b=? AND c=? AND d>=? ORDER BY d;
} {~/TEMP B-TREE FOR ORDER BY/}
do_execsql_test whereH-8.1 {
DROP TABLE t1;
CREATE TABLE t1(a,b,c,d,e);
CREATE INDEX t1abcd ON t1(a,b,c,d);
CREATE INDEX t1cd ON t1(c,d);
CREATE INDEX t1bcd ON t1(b,c,d);
EXPLAIN QUERY PLAN
SELECT d FROM t1 WHERE a=? AND b=? AND c=? AND d>=? ORDER BY d;
} {/INDEX t1abcd /}
do_execsql_test whereH-8.2 {
EXPLAIN QUERY PLAN
SELECT d FROM t1 WHERE a=? AND b=? AND c=? AND d>=? ORDER BY d;
} {~/TEMP B-TREE FOR ORDER BY/}
finish_test
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