000001 # 2010 April 07
000002 #
000003 # The author disclaims copyright to this source code. In place of
000004 # a legal notice, here is a blessing:
000005 #
000006 # May you do good and not evil.
000007 # May you find forgiveness for yourself and forgive others.
000008 # May you share freely, never taking more than you give.
000009 #
000010 #*************************************************************************
000011 # This file implements regression tests for SQLite library. The
000012 # focus of this script is testing automatic index creation logic.
000013 #
000014 # EVIDENCE-OF: R-34271-33106 PRAGMA automatic_index; PRAGMA
000015 # automatic_index = boolean; Query, set, or clear the automatic indexing
000016 # capability.
000017
000018 set testdir [file dirname $argv0]
000019 source $testdir/tester.tcl
000020
000021 # If the library is not compiled with automatic index support then
000022 # skip all tests in this file.
000023 #
000024 ifcapable {!autoindex} {
000025 finish_test
000026 return
000027 }
000028
000029 # Setup for logging
000030 db close
000031 sqlite3_shutdown
000032 test_sqlite3_log [list lappend ::log]
000033 set ::log [list]
000034 sqlite3 db test.db
000035
000036
000037 # With automatic index turned off, we do a full scan of the T2 table
000038 do_test autoindex1-100 {
000039 db eval {
000040 CREATE TABLE t1(a,b);
000041 INSERT INTO t1 VALUES(1,11);
000042 INSERT INTO t1 VALUES(2,22);
000043 INSERT INTO t1 SELECT a+2, b+22 FROM t1;
000044 INSERT INTO t1 SELECT a+4, b+44 FROM t1;
000045 CREATE TABLE t2(c,d);
000046 INSERT INTO t2 SELECT a, 900+b FROM t1;
000047 }
000048 db eval {
000049 PRAGMA automatic_index=OFF;
000050 SELECT b, d FROM t1 JOIN t2 ON a=c ORDER BY b;
000051 }
000052 } {11 911 22 922 33 933 44 944 55 955 66 966 77 977 88 988}
000053 do_test autoindex1-101 {
000054 db status step
000055 } {63}
000056 do_test autoindex1-102 {
000057 db status autoindex
000058 } {0}
000059
000060 # With autoindex turned on, we build an index once and then use that index
000061 # to find T2 values.
000062 do_test autoindex1-110 {
000063 db eval {
000064 PRAGMA automatic_index=ON;
000065 SELECT b, d FROM t1 JOIN t2 ON a=c ORDER BY b;
000066 }
000067 } {11 911 22 922 33 933 44 944 55 955 66 966 77 977 88 988}
000068 do_test autoindex1-111 {
000069 db status step
000070 } {7}
000071 do_test autoindex1-112 {
000072 db status autoindex
000073 } {7}
000074 do_test autoindex1-113 {
000075 set ::log
000076 } {SQLITE_WARNING_AUTOINDEX {automatic index on t2(c)}}
000077
000078 db close
000079 sqlite3_shutdown
000080 test_sqlite3_log
000081 sqlite3_initialize
000082 sqlite3 db test.db
000083
000084 # The same test as above, but this time the T2 query is a subquery rather
000085 # than a join.
000086 do_test autoindex1-200 {
000087 db eval {
000088 PRAGMA automatic_index=OFF;
000089 SELECT b, (SELECT d FROM t2 WHERE c=a) FROM t1;
000090 }
000091 } {11 911 22 922 33 933 44 944 55 955 66 966 77 977 88 988}
000092 do_test autoindex1-201 {
000093 db status step
000094 } {35}
000095 do_test autoindex1-202 {
000096 db status autoindex
000097 } {0}
000098 do_test autoindex1-210 {
000099 db eval {
000100 PRAGMA automatic_index=ON;
000101 ANALYZE;
000102 UPDATE sqlite_stat1 SET stat='10000' WHERE tbl='t1';
000103 -- Table t2 actually contains 8 rows.
000104 UPDATE sqlite_stat1 SET stat='16' WHERE tbl='t2';
000105 ANALYZE sqlite_master;
000106 SELECT b, (SELECT d FROM t2 WHERE c=a) FROM t1;
000107 }
000108 } {11 911 22 922 33 933 44 944 55 955 66 966 77 977 88 988}
000109 do_test autoindex1-211 {
000110 db status step
000111 } {7}
000112 do_test autoindex1-212 {
000113 db status autoindex
000114 } {7}
000115
000116
000117 # Modify the second table of the join while the join is in progress
000118 #
000119 do_execsql_test autoindex1-299 {
000120 UPDATE sqlite_stat1 SET stat='10000' WHERE tbl='t2';
000121 ANALYZE sqlite_master;
000122 EXPLAIN QUERY PLAN
000123 SELECT b, d FROM t1 CROSS JOIN t2 ON (c=a);
000124 } {/AUTOMATIC COVERING INDEX/}
000125 do_test autoindex1-300 {
000126 set r {}
000127 db eval {SELECT b, d FROM t1 CROSS JOIN t2 ON (c=a)} {
000128 lappend r $b $d
000129 db eval {UPDATE t2 SET d=d+1}
000130 }
000131 set r
000132 } {11 911 22 922 33 933 44 944 55 955 66 966 77 977 88 988}
000133 do_test autoindex1-310 {
000134 db eval {SELECT d FROM t2 ORDER BY d}
000135 } {919 930 941 952 963 974 985 996}
000136
000137 # The next test does a 10-way join on unindexed tables. Without
000138 # automatic indices, the join will take a long time to complete.
000139 # With automatic indices, it should only take about a second.
000140 #
000141 do_test autoindex1-400 {
000142 db eval {
000143 CREATE TABLE t4(a, b);
000144 INSERT INTO t4 VALUES(1,2);
000145 INSERT INTO t4 VALUES(2,3);
000146 }
000147 for {set n 2} {$n<4096} {set n [expr {$n+$n}]} {
000148 db eval {INSERT INTO t4 SELECT a+$n, b+$n FROM t4}
000149 }
000150 db eval {
000151 SELECT count(*) FROM t4;
000152 }
000153 } {4096}
000154 do_test autoindex1-401 {
000155 db eval {
000156 SELECT count(*)
000157 FROM t4 AS x1
000158 JOIN t4 AS x2 ON x2.a=x1.b
000159 JOIN t4 AS x3 ON x3.a=x2.b
000160 JOIN t4 AS x4 ON x4.a=x3.b
000161 JOIN t4 AS x5 ON x5.a=x4.b
000162 JOIN t4 AS x6 ON x6.a=x5.b
000163 JOIN t4 AS x7 ON x7.a=x6.b
000164 JOIN t4 AS x8 ON x8.a=x7.b
000165 JOIN t4 AS x9 ON x9.a=x8.b
000166 JOIN t4 AS x10 ON x10.a=x9.b;
000167 }
000168 } {4087}
000169
000170 # Ticket [8011086c85c6c404014c947fcf3eb9f42b184a0d] from 2010-07-08
000171 # Make sure automatic indices are not created for the RHS of an IN expression
000172 # that is not a correlated subquery.
000173 #
000174 do_execsql_test autoindex1-500 {
000175 CREATE TABLE t501(a INTEGER PRIMARY KEY, b);
000176 CREATE TABLE t502(x INTEGER PRIMARY KEY, y);
000177 INSERT INTO sqlite_stat1(tbl,idx,stat) VALUES('t501',null,'1000000');
000178 INSERT INTO sqlite_stat1(tbl,idx,stat) VALUES('t502',null,'1000');
000179 ANALYZE sqlite_master;
000180 }
000181 do_eqp_test autoindex1-500.1 {
000182 SELECT b FROM t501
000183 WHERE t501.a IN (SELECT x FROM t502 WHERE y=?);
000184 } {
000185 QUERY PLAN
000186 |--SEARCH t501 USING INTEGER PRIMARY KEY (rowid=?)
000187 `--LIST SUBQUERY xxxxxx
000188 `--SCAN t502
000189 }
000190 do_eqp_test autoindex1-501 {
000191 SELECT b FROM t501
000192 WHERE t501.a IN (SELECT x FROM t502 WHERE y=t501.b);
000193 } {
000194 QUERY PLAN
000195 |--SCAN t501
000196 `--CORRELATED LIST SUBQUERY xxxxxx
000197 `--SEARCH t502 USING AUTOMATIC COVERING INDEX (y=?)
000198 }
000199 do_eqp_test autoindex1-502 {
000200 SELECT b FROM t501
000201 WHERE t501.a=123
000202 AND t501.a IN (SELECT x FROM t502 WHERE y=t501.b);
000203 } {
000204 QUERY PLAN
000205 |--SEARCH t501 USING INTEGER PRIMARY KEY (rowid=?)
000206 `--CORRELATED LIST SUBQUERY xxxxxx
000207 `--SCAN t502
000208 }
000209
000210 # The following code checks a performance regression reported on the
000211 # mailing list on 2010-10-19. The problem is that the nRowEst field
000212 # of ephermeral tables was not being initialized correctly and so no
000213 # automatic index was being created for the emphemeral table when it was
000214 # used as part of a join.
000215 #
000216 do_execsql_test autoindex1-600 {
000217 CREATE TABLE flock_owner(
000218 owner_rec_id INTEGER CONSTRAINT flock_owner_key PRIMARY KEY,
000219 flock_no VARCHAR(6) NOT NULL REFERENCES flock (flock_no),
000220 owner_person_id INTEGER NOT NULL REFERENCES person (person_id),
000221 owner_change_date TEXT, last_changed TEXT NOT NULL,
000222 CONSTRAINT fo_owner_date UNIQUE (flock_no, owner_change_date)
000223 );
000224 CREATE TABLE sheep (
000225 Sheep_No char(7) NOT NULL,
000226 Date_of_Birth char(8),
000227 Sort_DoB text,
000228 Flock_Book_Vol char(2),
000229 Breeder_No char(6),
000230 Breeder_Person integer,
000231 Originating_Flock char(6),
000232 Registering_Flock char(6),
000233 Tag_Prefix char(9),
000234 Tag_No char(15),
000235 Sort_Tag_No integer,
000236 Breeders_Temp_Tag char(15),
000237 Sex char(1),
000238 Sheep_Name char(32),
000239 Sire_No char(7),
000240 Dam_No char(7),
000241 Register_Code char(1),
000242 Colour char(48),
000243 Colour_Code char(2),
000244 Pattern_Code char(8),
000245 Horns char(1),
000246 Litter_Size char(1),
000247 Coeff_of_Inbreeding real,
000248 Date_of_Registration text,
000249 Date_Last_Changed text,
000250 UNIQUE(Sheep_No));
000251 CREATE INDEX fo_flock_no_index
000252 ON flock_owner (flock_no);
000253 CREATE INDEX fo_owner_change_date_index
000254 ON flock_owner (owner_change_date);
000255 CREATE INDEX fo_owner_person_id_index
000256 ON flock_owner (owner_person_id);
000257 CREATE INDEX sheep_org_flock_index
000258 ON sheep (originating_flock);
000259 CREATE INDEX sheep_reg_flock_index
000260 ON sheep (registering_flock);
000261 }
000262 do_eqp_test autoindex1-600a {
000263 SELECT x.sheep_no, x.registering_flock, x.date_of_registration
000264 FROM sheep x LEFT JOIN
000265 (SELECT s.sheep_no, prev.flock_no, prev.owner_person_id,
000266 s.date_of_registration, prev.owner_change_date
000267 FROM sheep s JOIN flock_owner prev ON s.registering_flock =
000268 prev.flock_no
000269 AND (prev.owner_change_date <= s.date_of_registration || ' 00:00:00')
000270 WHERE NOT EXISTS
000271 (SELECT 'x' FROM flock_owner later
000272 WHERE prev.flock_no = later.flock_no
000273 AND later.owner_change_date > prev.owner_change_date
000274 AND later.owner_change_date <= s.date_of_registration||' 00:00:00')
000275 ) y ON x.sheep_no = y.sheep_no
000276 WHERE y.sheep_no IS NULL
000277 ORDER BY x.registering_flock;
000278 } {
000279 QUERY PLAN
000280 |--MATERIALIZE y
000281 | |--SCAN s
000282 | |--SEARCH prev USING INDEX sqlite_autoindex_flock_owner_1 (flock_no=? AND owner_change_date<?)
000283 | `--CORRELATED SCALAR SUBQUERY xxxxxx
000284 | `--SEARCH later USING COVERING INDEX sqlite_autoindex_flock_owner_1 (flock_no=? AND owner_change_date>? AND owner_change_date<?)
000285 |--SCAN x USING INDEX sheep_reg_flock_index
000286 `--SEARCH y USING AUTOMATIC COVERING INDEX (sheep_no=?)
000287 }
000288
000289
000290 do_execsql_test autoindex1-700 {
000291 CREATE TABLE t5(a, b, c);
000292 }
000293 do_eqp_test autoindex1-700a {
000294 SELECT a FROM t5 WHERE b=10 ORDER BY c;
000295 } {
000296 QUERY PLAN
000297 |--SCAN t5
000298 `--USE TEMP B-TREE FOR ORDER BY
000299 }
000300
000301 # The following checks a performance issue reported on the sqlite-dev
000302 # mailing list on 2013-01-10
000303 #
000304 do_execsql_test autoindex1-800 {
000305 CREATE TABLE accounts(
000306 _id INTEGER PRIMARY KEY AUTOINCREMENT,
000307 account_name TEXT,
000308 account_type TEXT,
000309 data_set TEXT
000310 );
000311 CREATE TABLE data(
000312 _id INTEGER PRIMARY KEY AUTOINCREMENT,
000313 package_id INTEGER REFERENCES package(_id),
000314 mimetype_id INTEGER REFERENCES mimetype(_id) NOT NULL,
000315 raw_contact_id INTEGER REFERENCES raw_contacts(_id) NOT NULL,
000316 is_read_only INTEGER NOT NULL DEFAULT 0,
000317 is_primary INTEGER NOT NULL DEFAULT 0,
000318 is_super_primary INTEGER NOT NULL DEFAULT 0,
000319 data_version INTEGER NOT NULL DEFAULT 0,
000320 data1 TEXT,
000321 data2 TEXT,
000322 data3 TEXT,
000323 data4 TEXT,
000324 data5 TEXT,
000325 data6 TEXT,
000326 data7 TEXT,
000327 data8 TEXT,
000328 data9 TEXT,
000329 data10 TEXT,
000330 data11 TEXT,
000331 data12 TEXT,
000332 data13 TEXT,
000333 data14 TEXT,
000334 data15 TEXT,
000335 data_sync1 TEXT,
000336 data_sync2 TEXT,
000337 data_sync3 TEXT,
000338 data_sync4 TEXT
000339 );
000340 CREATE TABLE mimetypes(
000341 _id INTEGER PRIMARY KEY AUTOINCREMENT,
000342 mimetype TEXT NOT NULL
000343 );
000344 CREATE TABLE raw_contacts(
000345 _id INTEGER PRIMARY KEY AUTOINCREMENT,
000346 account_id INTEGER REFERENCES accounts(_id),
000347 sourceid TEXT,
000348 raw_contact_is_read_only INTEGER NOT NULL DEFAULT 0,
000349 version INTEGER NOT NULL DEFAULT 1,
000350 dirty INTEGER NOT NULL DEFAULT 0,
000351 deleted INTEGER NOT NULL DEFAULT 0,
000352 contact_id INTEGER REFERENCES contacts(_id),
000353 aggregation_mode INTEGER NOT NULL DEFAULT 0,
000354 aggregation_needed INTEGER NOT NULL DEFAULT 1,
000355 custom_ringtone TEXT,
000356 send_to_voicemail INTEGER NOT NULL DEFAULT 0,
000357 times_contacted INTEGER NOT NULL DEFAULT 0,
000358 last_time_contacted INTEGER,
000359 starred INTEGER NOT NULL DEFAULT 0,
000360 display_name TEXT,
000361 display_name_alt TEXT,
000362 display_name_source INTEGER NOT NULL DEFAULT 0,
000363 phonetic_name TEXT,
000364 phonetic_name_style TEXT,
000365 sort_key TEXT,
000366 sort_key_alt TEXT,
000367 name_verified INTEGER NOT NULL DEFAULT 0,
000368 sync1 TEXT,
000369 sync2 TEXT,
000370 sync3 TEXT,
000371 sync4 TEXT,
000372 sync_uid TEXT,
000373 sync_version INTEGER NOT NULL DEFAULT 1,
000374 has_calendar_event INTEGER NOT NULL DEFAULT 0,
000375 modified_time INTEGER,
000376 is_restricted INTEGER DEFAULT 0,
000377 yp_source TEXT,
000378 method_selected INTEGER DEFAULT 0,
000379 custom_vibration_type INTEGER DEFAULT 0,
000380 custom_ringtone_path TEXT,
000381 message_notification TEXT,
000382 message_notification_path TEXT
000383 );
000384 CREATE INDEX data_mimetype_data1_index ON data (mimetype_id,data1);
000385 CREATE INDEX data_raw_contact_id ON data (raw_contact_id);
000386 CREATE UNIQUE INDEX mime_type ON mimetypes (mimetype);
000387 CREATE INDEX raw_contact_sort_key1_index ON raw_contacts (sort_key);
000388 CREATE INDEX raw_contact_sort_key2_index ON raw_contacts (sort_key_alt);
000389 CREATE INDEX raw_contacts_contact_id_index ON raw_contacts (contact_id);
000390 CREATE INDEX raw_contacts_source_id_account_id_index
000391 ON raw_contacts (sourceid, account_id);
000392 ANALYZE sqlite_master;
000393 INSERT INTO sqlite_stat1
000394 VALUES('raw_contacts','raw_contact_sort_key2_index','1600 4');
000395 INSERT INTO sqlite_stat1
000396 VALUES('raw_contacts','raw_contact_sort_key1_index','1600 4');
000397 INSERT INTO sqlite_stat1
000398 VALUES('raw_contacts','raw_contacts_source_id_account_id_index',
000399 '1600 1600 1600');
000400 INSERT INTO sqlite_stat1
000401 VALUES('raw_contacts','raw_contacts_contact_id_index','1600 1');
000402 INSERT INTO sqlite_stat1 VALUES('mimetypes','mime_type','12 1');
000403 INSERT INTO sqlite_stat1
000404 VALUES('data','data_mimetype_data1_index','9819 2455 3');
000405 INSERT INTO sqlite_stat1 VALUES('data','data_raw_contact_id','9819 7');
000406 INSERT INTO sqlite_stat1 VALUES('accounts',NULL,'1');
000407 DROP TABLE IF EXISTS sqlite_stat3;
000408 ANALYZE sqlite_master;
000409
000410 EXPLAIN QUERY PLAN
000411 SELECT * FROM
000412 data JOIN mimetypes ON (data.mimetype_id=mimetypes._id)
000413 JOIN raw_contacts ON (data.raw_contact_id=raw_contacts._id)
000414 JOIN accounts ON (raw_contacts.account_id=accounts._id)
000415 WHERE mimetype_id=10 AND data14 IS NOT NULL;
000416 } {/SEARCH data .*SEARCH raw_contacts/}
000417 do_execsql_test autoindex1-801 {
000418 EXPLAIN QUERY PLAN
000419 SELECT * FROM
000420 data JOIN mimetypes ON (data.mimetype_id=mimetypes._id)
000421 JOIN raw_contacts ON (data.raw_contact_id=raw_contacts._id)
000422 JOIN accounts ON (raw_contacts.account_id=accounts._id)
000423 WHERE mimetypes._id=10 AND data14 IS NOT NULL;
000424 } {/SEARCH data .*SEARCH raw_contacts/}
000425
000426 # Another test case from an important user of SQLite. The key feature of
000427 # this test is that the "aggindex" subquery should make use of an
000428 # automatic index. If it does, the query is fast. If it does not, the
000429 # query is deathly slow. It worked OK in 3.7.17 but started going slow
000430 # with version 3.8.0. The problem was fixed for 3.8.7 by reducing the
000431 # cost estimate for automatic indexes on views and subqueries.
000432 #
000433 db close
000434 forcedelete test.db
000435 sqlite3 db test.db
000436 do_execsql_test autoindex1-900 {
000437 CREATE TABLE messages (ROWID INTEGER PRIMARY KEY AUTOINCREMENT, message_id, document_id BLOB, in_reply_to, remote_id INTEGER, sender INTEGER, subject_prefix, subject INTEGER, date_sent INTEGER, date_received INTEGER, date_created INTEGER, date_last_viewed INTEGER, mailbox INTEGER, remote_mailbox INTEGER, original_mailbox INTEGER, flags INTEGER, read, flagged, size INTEGER, color, encoding, type INTEGER, pad, conversation_id INTEGER DEFAULT -1, snippet TEXT DEFAULT NULL, fuzzy_ancestor INTEGER DEFAULT NULL, automated_conversation INTEGER DEFAULT 0, root_status INTEGER DEFAULT -1, conversation_position INTEGER DEFAULT -1);
000438 CREATE INDEX date_index ON messages(date_received);
000439 CREATE INDEX date_last_viewed_index ON messages(date_last_viewed);
000440 CREATE INDEX date_created_index ON messages(date_created);
000441 CREATE INDEX message_message_id_mailbox_index ON messages(message_id, mailbox);
000442 CREATE INDEX message_document_id_index ON messages(document_id);
000443 CREATE INDEX message_read_index ON messages(read);
000444 CREATE INDEX message_flagged_index ON messages(flagged);
000445 CREATE INDEX message_mailbox_index ON messages(mailbox, date_received);
000446 CREATE INDEX message_remote_mailbox_index ON messages(remote_mailbox, remote_id);
000447 CREATE INDEX message_type_index ON messages(type);
000448 CREATE INDEX message_conversation_id_conversation_position_index ON messages(conversation_id, conversation_position);
000449 CREATE INDEX message_fuzzy_ancestor_index ON messages(fuzzy_ancestor);
000450 CREATE INDEX message_subject_fuzzy_ancestor_index ON messages(subject, fuzzy_ancestor);
000451 CREATE INDEX message_sender_subject_automated_conversation_index ON messages(sender, subject, automated_conversation);
000452 CREATE INDEX message_sender_index ON messages(sender);
000453 CREATE INDEX message_root_status ON messages(root_status);
000454 CREATE TABLE subjects (ROWID INTEGER PRIMARY KEY, subject COLLATE RTRIM, normalized_subject COLLATE RTRIM);
000455 CREATE INDEX subject_subject_index ON subjects(subject);
000456 CREATE INDEX subject_normalized_subject_index ON subjects(normalized_subject);
000457 CREATE TABLE addresses (ROWID INTEGER PRIMARY KEY, address COLLATE NOCASE, comment, UNIQUE(address, comment));
000458 CREATE INDEX addresses_address_index ON addresses(address);
000459 CREATE TABLE mailboxes (ROWID INTEGER PRIMARY KEY, url UNIQUE, total_count INTEGER DEFAULT 0, unread_count INTEGER DEFAULT 0, unseen_count INTEGER DEFAULT 0, deleted_count INTEGER DEFAULT 0, unread_count_adjusted_for_duplicates INTEGER DEFAULT 0, change_identifier, source INTEGER, alleged_change_identifier);
000460 CREATE INDEX mailboxes_source_index ON mailboxes(source);
000461 CREATE TABLE labels (ROWID INTEGER PRIMARY KEY, message_id INTEGER NOT NULL, mailbox_id INTEGER NOT NULL, UNIQUE(message_id, mailbox_id));
000462 CREATE INDEX labels_message_id_mailbox_id_index ON labels(message_id, mailbox_id);
000463 CREATE INDEX labels_mailbox_id_index ON labels(mailbox_id);
000464
000465 explain query plan
000466 SELECT messages.ROWID,
000467 messages.message_id,
000468 messages.remote_id,
000469 messages.date_received,
000470 messages.date_sent,
000471 messages.flags,
000472 messages.size,
000473 messages.color,
000474 messages.date_last_viewed,
000475 messages.subject_prefix,
000476 subjects.subject,
000477 sender.comment,
000478 sender.address,
000479 NULL,
000480 messages.mailbox,
000481 messages.original_mailbox,
000482 NULL,
000483 NULL,
000484 messages.type,
000485 messages.document_id,
000486 sender,
000487 NULL,
000488 messages.conversation_id,
000489 messages.conversation_position,
000490 agglabels.labels
000491 FROM mailboxes AS mailbox
000492 JOIN messages ON mailbox.ROWID = messages.mailbox
000493 LEFT OUTER JOIN subjects ON messages.subject = subjects.ROWID
000494 LEFT OUTER JOIN addresses AS sender ON messages.sender = sender.ROWID
000495 LEFT OUTER JOIN (
000496 SELECT message_id, group_concat(mailbox_id) as labels
000497 FROM labels GROUP BY message_id
000498 ) AS agglabels ON messages.ROWID = agglabels.message_id
000499 WHERE (mailbox.url = 'imap://email.app@imap.gmail.com/%5BGmail%5D/All%20Mail')
000500 AND (messages.ROWID IN (
000501 SELECT labels.message_id
000502 FROM labels JOIN mailboxes ON labels.mailbox_id = mailboxes.ROWID
000503 WHERE mailboxes.url = 'imap://email.app@imap.gmail.com/INBOX'))
000504 AND messages.mailbox in (6,12,18,24,30,36,42,1,7,13,19,25,31,37,43,2,8,
000505 14,20,26,32,38,3,9,15,21,27,33,39,4,10,16,22,28,
000506 34,40,5,11,17,23,35,41)
000507 ORDER BY date_received DESC;
000508 } {/agglabels USING AUTOMATIC COVERING INDEX/}
000509
000510 # A test case for VIEWs
000511 #
000512 do_execsql_test autoindex1-901 {
000513 CREATE TABLE t1(x INTEGER PRIMARY KEY, y, z);
000514 CREATE TABLE t2(a, b);
000515 CREATE VIEW agg2 AS SELECT a, sum(b) AS m FROM t2 GROUP BY a;
000516 EXPLAIN QUERY PLAN
000517 SELECT t1.z, agg2.m
000518 FROM t1 JOIN agg2 ON t1.y=agg2.m
000519 WHERE t1.x IN (1,2,3);
000520 } {/USING AUTOMATIC COVERING INDEX/}
000521
000522 # 2015-04-15: A NULL CollSeq pointer in automatic index creation.
000523 #
000524 do_execsql_test autoindex1-920 {
000525 CREATE TABLE t920(x);
000526 INSERT INTO t920 VALUES(3),(4),(5);
000527 SELECT * FROM t920,(SELECT 0 FROM t920),(VALUES(9)) WHERE 5 IN (x);
000528 } {5 0 9 5 0 9 5 0 9}
000529
000530 #-------------------------------------------------------------------------
000531 # An IS term from the WHERE clause of a LEFT JOIN cannot be used as an
000532 # index driver for the RHS of a LEFT JOIN. Prior to this being fixed,
000533 # the following SELECT count(*) would incorrectly return 1.
000534 #
000535 do_execsql_test autoindex1-1010 {
000536 CREATE TABLE t11(w);
000537 CREATE TABLE t12(y);
000538 INSERT INTO t11 VALUES(NULL);
000539 INSERT INTO t12 VALUES('notnull');
000540 }
000541 do_execsql_test autoindex1-1020 {
000542 SELECT count(*) FROM t11 LEFT JOIN t12 WHERE t12.y IS t11.w;
000543 } 0
000544
000545
000546
000547
000548 finish_test