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sqlite/test/autoindex1.test

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# 2010 April 07
#
# 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 testing automatic index creation logic.
#
set testdir [file dirname $argv0]
source $testdir/tester.tcl
# If the library is not compiled with automatic index support then
# skip all tests in this file.
#
ifcapable {!autoindex} {
finish_test
return
}
# With automatic index turned off, we do a full scan of the T2 table
do_test autoindex1-100 {
db eval {
CREATE TABLE t1(a,b);
INSERT INTO t1 VALUES(1,11);
INSERT INTO t1 VALUES(2,22);
INSERT INTO t1 SELECT a+2, b+22 FROM t1;
INSERT INTO t1 SELECT a+4, b+44 FROM t1;
CREATE TABLE t2(c,d);
INSERT INTO t2 SELECT a, 900+b FROM t1;
}
db eval {
PRAGMA automatic_index=OFF;
SELECT b, d FROM t1 JOIN t2 ON a=c ORDER BY b;
}
} {11 911 22 922 33 933 44 944 55 955 66 966 77 977 88 988}
do_test autoindex1-101 {
db status step
} {63}
do_test autoindex1-102 {
db status autoindex
} {0}
# With autoindex turned on, we build an index once and then use that index
# to find T2 values.
do_test autoindex1-110 {
db eval {
PRAGMA automatic_index=ON;
SELECT b, d FROM t1 JOIN t2 ON a=c ORDER BY b;
}
} {11 911 22 922 33 933 44 944 55 955 66 966 77 977 88 988}
do_test autoindex1-111 {
db status step
} {7}
do_test autoindex1-112 {
db status autoindex
} {7}
# The same test as above, but this time the T2 query is a subquery rather
# than a join.
do_test autoindex1-200 {
db eval {
PRAGMA automatic_index=OFF;
SELECT b, (SELECT d FROM t2 WHERE c=a) FROM t1;
}
} {11 911 22 922 33 933 44 944 55 955 66 966 77 977 88 988}
do_test autoindex1-201 {
db status step
} {35}
do_test autoindex1-202 {
db status autoindex
} {0}
do_test autoindex1-210 {
db eval {
PRAGMA automatic_index=ON;
SELECT b, (SELECT d FROM t2 WHERE c=a) FROM t1;
}
} {11 911 22 922 33 933 44 944 55 955 66 966 77 977 88 988}
do_test autoindex1-211 {
db status step
} {7}
do_test autoindex1-212 {
db status autoindex
} {7}
finish_test