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Additional test cases for skip-scan. 

FossilOrigin-Name: ce70803f5e1bfb4dc495d3a0c2ddd5ee6c3a10fe
This commit is contained in:
drh 2013-11-27 13:48:02 +00:00
parent ac68ced162
commit ce00a83785
3 changed files with 53 additions and 13 deletions
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12
manifest
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@ -1,5 +1,5 @@
C Make\ssure\sthe\scolWidth\sarray\sis\scorrectly\sinitialized\sin\sthe\s".explain"\ncommand\sof\sthe\sshell.
D 2013-11-27T13:24:18.470
C Additional\stest\scases\sfor\sskip-scan.
D 2013-11-27T13:48:02.795
F Makefile.arm-wince-mingw32ce-gcc d6df77f1f48d690bd73162294bbba7f59507c72f
F Makefile.in e1a9b4258bbde53f5636f4e238c65b7e11459e2b
F Makefile.linux-gcc 91d710bdc4998cb015f39edf3cb314ec4f4d7e23
@ -808,7 +808,7 @@ F test/shortread1.test bb591ef20f0fd9ed26d0d12e80eee6d7ac8897a3
F test/shrink.test 8c70f62b6e8eb4d54533de6d65bd06b1b9a17868
F test/sidedelete.test f0ad71abe6233e3b153100f3b8d679b19a488329
F test/skipscan1.test 6bb4891c2cc5efd5690a9da9e7508e53d4a68e10
F test/skipscan2.test c1e21a19ec8fa3674e9ccd0475f20ef82c275838
F test/skipscan2.test 5a4db0799c338ddbacb154aaa5589c0254b36a8d
F test/soak.test 0b5b6375c9f4110c828070b826b3b4b0bb65cd5f
F test/softheap1.test 40562fe6cac6d9827b7b42b86d45aedf12c15e24
F test/sort.test 0e4456e729e5a92a625907c63dcdedfbe72c5dc5
@ -1145,7 +1145,7 @@ F tool/vdbe-compress.tcl f12c884766bd14277f4fcedcae07078011717381
F tool/warnings-clang.sh f6aa929dc20ef1f856af04a730772f59283631d4
F tool/warnings.sh d1a6de74685f360ab718efda6265994b99bbea01
F tool/win/sqlite.vsix 030f3eeaf2cb811a3692ab9c14d021a75ce41fff
P 83c0bb9913838d18ba355033afde6e38b4690842
R 67ef9465051c6a15a8474ed69b1e156e
P ceebcdcaf1acf409b77b4cc2903b4570001f098a
R bcfcf6f48c85e4fa706276f8ed169192
U drh
Z 9742934aff6856eb16d7b29615a17978
Z 88c6067bf128a26cfad7d97b15ea7137

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ceebcdcaf1acf409b77b4cc2903b4570001f098a
ce70803f5e1bfb4dc495d3a0c2ddd5ee6c3a10fe

52
test/skipscan2.test
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@ -99,6 +99,51 @@ do_execsql_test skipscan2-1.7 {
ORDER BY 1;
} {David Jack Patrick Quiana Xavier}
# Add 8 more people, bringing the total to 34. Then the number of
# duplicates in the left-column of the index will be 17 and
# skip-scan should not be used after an (unfudged) ANALYZE.
#
do_execsql_test skipscan2-1.8 {
INSERT INTO people VALUES('Angie','student',166);
INSERT INTO people VALUES('Brad','student',176);
INSERT INTO people VALUES('Claire','student',168);
INSERT INTO people VALUES('Donald','student',162);
INSERT INTO people VALUES('Elaine','student',177);
INSERT INTO people VALUES('Frazier','student',159);
INSERT INTO people VALUES('Grace','student',179);
INSERT INTO people VALUES('Horace','student',166);
ANALYZE;
SELECT stat FROM sqlite_stat1 WHERE idx='people_idx1';
} {{34 17 2}}
db cache flush
do_execsql_test skipscan2-1.9 {
SELECT name FROM people WHERE height>=180 ORDER BY +name;
} {David Jack Patrick Quiana Xavier}
do_execsql_test skipscan2-1.9eqp {
EXPLAIN QUERY PLAN
SELECT name FROM people WHERE height>=180 ORDER BY +name;
} {~/*INDEX people_idx1 */}
# Add 2 more people, bringing the total to 36. Then the number of
# duplicates in the left-column of the index will be 18 and
# skip-scan will be used after an (unfudged) ANALYZE.
#
do_execsql_test skipscan2-1.10 {
INSERT INTO people VALUES('Ingrad','student',155);
INSERT INTO people VALUES('Jacob','student',179);
ANALYZE;
SELECT stat FROM sqlite_stat1 WHERE idx='people_idx1';
} {{36 18 2}}
db cache flush
do_execsql_test skipscan2-1.11 {
SELECT name FROM people WHERE height>=180 ORDER BY +name;
} {David Jack Patrick Quiana Xavier}
do_execsql_test skipscan2-1.11eqp {
EXPLAIN QUERY PLAN
SELECT name FROM people WHERE height>=180 ORDER BY +name;
} {/*INDEX people_idx1 */}
# Repeat using a WITHOUT ROWID table.
#
do_execsql_test skipscan2-2.1 {
@ -111,7 +156,7 @@ do_execsql_test skipscan2-2.1 {
CREATE INDEX peoplew_idx1 ON peoplew(role, height);
INSERT INTO peoplew(name,role,height)
SELECT name, role, height FROM people;
DROP TABLE people;
ALTER TABLE people RENAME TO old_people;
SELECT name FROM peoplew WHERE height>=180 ORDER BY +name;
} {David Jack Patrick Quiana Xavier}
do_execsql_test skipscan2-2.2 {
@ -130,11 +175,6 @@ do_execsql_test skipscan2-2.2 {
#
do_execsql_test skipscan2-2.4 {
ANALYZE;
-- We do not have enough people above to actually force the use
-- of a skip-scan. So make a manual adjustment to the stat1 table
-- to make it seem like there are many more.
UPDATE sqlite_stat1 SET stat='10000 5000 20' WHERE idx='peoplew_idx1';
ANALYZE sqlite_master;
}
db cache flush
do_execsql_test skipscan2-2.5 {