AryaWu/sqlite
0
1# 2001 September 152#3# The author disclaims copyright to this source code. In place of4# a legal notice, here is a blessing:5#6# May you do good and not evil.7# May you find forgiveness for yourself and forgive others.8# May you share freely, never taking more than you give.9#10#***********************************************************************11# This file implements regression tests for SQLite library. The12# focus of this file is testing SELECT statements that contain13# subqueries in their FROM clause.14#15 16set testdir [file dirname $argv0]17source $testdir/tester.tcl18 19# Omit this whole file if the library is build without subquery support.20ifcapable !subquery {21 finish_test22 return23}24set ::testprefix select625 26do_test select6-1.0 {27 execsql {28 BEGIN;29 CREATE TABLE t1(x, y);30 INSERT INTO t1 VALUES(1,1);31 INSERT INTO t1 VALUES(2,2);32 INSERT INTO t1 VALUES(3,2);33 INSERT INTO t1 VALUES(4,3);34 INSERT INTO t1 VALUES(5,3);35 INSERT INTO t1 VALUES(6,3);36 INSERT INTO t1 VALUES(7,3);37 INSERT INTO t1 VALUES(8,4);38 INSERT INTO t1 VALUES(9,4);39 INSERT INTO t1 VALUES(10,4);40 INSERT INTO t1 VALUES(11,4);41 INSERT INTO t1 VALUES(12,4);42 INSERT INTO t1 VALUES(13,4);43 INSERT INTO t1 VALUES(14,4);44 INSERT INTO t1 VALUES(15,4);45 INSERT INTO t1 VALUES(16,5);46 INSERT INTO t1 VALUES(17,5);47 INSERT INTO t1 VALUES(18,5);48 INSERT INTO t1 VALUES(19,5);49 INSERT INTO t1 VALUES(20,5);50 COMMIT;51 SELECT DISTINCT y FROM t1 ORDER BY y;52 }53} {1 2 3 4 5}54 55do_test select6-1.1 {56 execsql2 {SELECT * FROM (SELECT x, y FROM t1 WHERE x<2)}57} {x 1 y 1}58do_test select6-1.2 {59 execsql {SELECT count(*) FROM (SELECT y FROM t1)}60} {20}61do_test select6-1.3 {62 execsql {SELECT count(*) FROM (SELECT DISTINCT y FROM t1)}63} {5}64do_test select6-1.4 {65 execsql {SELECT count(*) FROM (SELECT DISTINCT * FROM (SELECT y FROM t1))}66} {5}67do_test select6-1.5 {68 execsql {SELECT count(*) FROM (SELECT * FROM (SELECT DISTINCT y FROM t1))}69} {5}70 71do_test select6-1.6 {72 execsql {73 SELECT * 74 FROM (SELECT count(*),y FROM t1 GROUP BY y) AS a,75 (SELECT max(x),y FROM t1 GROUP BY y) as b76 WHERE a.y=b.y ORDER BY a.y77 }78} {1 1 1 1 2 2 3 2 4 3 7 3 8 4 15 4 5 5 20 5}79do_test select6-1.7 {80 execsql {81 SELECT a.y, a.[count(*)], [max(x)], [count(*)]82 FROM (SELECT count(*),y FROM t1 GROUP BY y) AS a,83 (SELECT max(x),y FROM t1 GROUP BY y) as b84 WHERE a.y=b.y ORDER BY a.y85 }86} {1 1 1 1 2 2 3 2 3 4 7 4 4 8 15 8 5 5 20 5}87do_test select6-1.8 {88 execsql {89 SELECT q, p, r90 FROM (SELECT count(*) as p , y as q FROM t1 GROUP BY y) AS a,91 (SELECT max(x) as r, y as s FROM t1 GROUP BY y) as b92 WHERE q=s ORDER BY s93 }94} {1 1 1 2 2 3 3 4 7 4 8 15 5 5 20}95do_test select6-1.9 {96 execsql {97 SELECT q, p, r, b.[min(x)+y]98 FROM (SELECT count(*) as p , y as q FROM t1 GROUP BY y) AS a,99 (SELECT max(x) as r, y as s, min(x)+y FROM t1 GROUP BY y) as b100 WHERE q=s ORDER BY s101 }102} {1 1 1 2 2 2 3 4 3 4 7 7 4 8 15 12 5 5 20 21}103 104do_test select6-2.0 {105 execsql {106 CREATE TABLE t2(a INTEGER PRIMARY KEY, b);107 INSERT INTO t2 SELECT * FROM t1;108 SELECT DISTINCT b FROM t2 ORDER BY b;109 }110} {1 2 3 4 5}111do_test select6-2.1 {112 execsql2 {SELECT * FROM (SELECT a, b FROM t2 WHERE a<2)}113} {a 1 b 1}114do_test select6-2.2 {115 execsql {SELECT count(*) FROM (SELECT b FROM t2)}116} {20}117do_test select6-2.3 {118 execsql {SELECT count(*) FROM (SELECT DISTINCT b FROM t2)}119} {5}120do_test select6-2.4 {121 execsql {SELECT count(*) FROM (SELECT DISTINCT * FROM (SELECT b FROM t2))}122} {5}123do_test select6-2.5 {124 execsql {SELECT count(*) FROM (SELECT * FROM (SELECT DISTINCT b FROM t2))}125} {5}126 127do_test select6-2.6 {128 execsql {129 SELECT * 130 FROM (SELECT count(*),b FROM t2 GROUP BY b) AS a,131 (SELECT max(a),b FROM t2 GROUP BY b) as b132 WHERE a.b=b.b ORDER BY a.b133 }134} {1 1 1 1 2 2 3 2 4 3 7 3 8 4 15 4 5 5 20 5}135do_test select6-2.7 {136 execsql {137 SELECT a.b, a.[count(*)], [max(a)], [count(*)]138 FROM (SELECT count(*),b FROM t2 GROUP BY b) AS a,139 (SELECT max(a),b FROM t2 GROUP BY b) as b140 WHERE a.b=b.b ORDER BY a.b141 }142} {1 1 1 1 2 2 3 2 3 4 7 4 4 8 15 8 5 5 20 5}143do_test select6-2.8 {144 execsql {145 SELECT q, p, r146 FROM (SELECT count(*) as p , b as q FROM t2 GROUP BY b) AS a,147 (SELECT max(a) as r, b as s FROM t2 GROUP BY b) as b148 WHERE q=s ORDER BY s149 }150} {1 1 1 2 2 3 3 4 7 4 8 15 5 5 20}151do_test select6-2.9 {152 execsql {153 SELECT a.q, a.p, b.r154 FROM (SELECT count(*) as p , b as q FROM t2 GROUP BY q) AS a,155 (SELECT max(a) as r, b as s FROM t2 GROUP BY s) as b156 WHERE a.q=b.s ORDER BY a.q157 }158} {1 1 1 2 2 3 3 4 7 4 8 15 5 5 20}159 160do_test select6-3.1 {161 execsql2 {162 SELECT * FROM (SELECT * FROM (SELECT * FROM t1 WHERE x=3));163 }164} {x 3 y 2}165do_test select6-3.2 {166 execsql {167 SELECT * FROM168 (SELECT a.q, a.p, b.r169 FROM (SELECT count(*) as p , b as q FROM t2 GROUP BY q) AS a,170 (SELECT max(a) as r, b as s FROM t2 GROUP BY s) as b171 WHERE a.q=b.s ORDER BY a.q)172 }173} {1 1 1 2 2 3 3 4 7 4 8 15 5 5 20}174do_test select6-3.3 {175 execsql {176 SELECT a,b,a+b FROM (SELECT avg(x) as 'a', avg(y) as 'b' FROM t1)177 }178} {10.5 3.7 14.2}179do_test select6-3.4 {180 execsql {181 SELECT a,b,a+b FROM (SELECT avg(x) as 'a', avg(y) as 'b' FROM t1 WHERE y=4)182 }183} {11.5 4.0 15.5}184do_test select6-3.5 {185 execsql {186 SELECT x,y,x+y FROM (SELECT avg(a) as 'x', avg(b) as 'y' FROM t2 WHERE a=4)187 }188} {4.0 3.0 7.0}189do_test select6-3.6 {190 execsql {191 SELECT a,b,a+b FROM (SELECT avg(x) as 'a', avg(y) as 'b' FROM t1)192 WHERE a>10193 }194} {10.5 3.7 14.2}195do_test select6-3.7 {196 execsql {197 SELECT a,b,a+b FROM (SELECT avg(x) as 'a', avg(y) as 'b' FROM t1)198 WHERE a<10199 }200} {}201do_test select6-3.8 {202 execsql {203 SELECT a,b,a+b FROM (SELECT avg(x) as 'a', avg(y) as 'b' FROM t1 WHERE y=4)204 WHERE a>10205 }206} {11.5 4.0 15.5}207do_test select6-3.9 {208 execsql {209 SELECT a,b,a+b FROM (SELECT avg(x) as 'a', avg(y) as 'b' FROM t1 WHERE y=4)210 WHERE a<10211 }212} {}213do_test select6-3.10 {214 execsql {215 SELECT a,b,a+b FROM (SELECT avg(x) as 'a', y as 'b' FROM t1 GROUP BY b)216 ORDER BY a217 }218} {1.0 1 2.0 2.5 2 4.5 5.5 3 8.5 11.5 4 15.5 18.0 5 23.0}219do_test select6-3.11 {220 execsql {221 SELECT a,b,a+b FROM 222 (SELECT avg(x) as 'a', y as 'b' FROM t1 GROUP BY b)223 WHERE b<4 ORDER BY a224 }225} {1.0 1 2.0 2.5 2 4.5 5.5 3 8.5}226do_test select6-3.12 {227 execsql {228 SELECT a,b,a+b FROM 229 (SELECT avg(x) as 'a', y as 'b' FROM t1 GROUP BY b HAVING a>1)230 WHERE b<4 ORDER BY a231 }232} {2.5 2 4.5 5.5 3 8.5}233do_test select6-3.13 {234 execsql {235 SELECT a,b,a+b FROM 236 (SELECT avg(x) as 'a', y as 'b' FROM t1 GROUP BY b HAVING a>1)237 ORDER BY a238 }239} {2.5 2 4.5 5.5 3 8.5 11.5 4 15.5 18.0 5 23.0}240do_test select6-3.14 {241 execsql {242 SELECT [count(*)],y FROM (SELECT count(*), y FROM t1 GROUP BY y)243 ORDER BY [count(*)]244 }245} {1 1 2 2 4 3 5 5 8 4}246do_test select6-3.15 {247 execsql {248 SELECT [count(*)],y FROM (SELECT count(*), y FROM t1 GROUP BY y)249 ORDER BY y250 }251} {1 1 2 2 4 3 8 4 5 5}252 253do_test select6-4.1 {254 execsql {255 SELECT a,b,c FROM 256 (SELECT x AS 'a', y AS 'b', x+y AS 'c' FROM t1 WHERE y=4)257 WHERE a<10 ORDER BY a;258 }259} {8 4 12 9 4 13}260do_test select6-4.2 {261 execsql {262 SELECT y FROM (SELECT DISTINCT y FROM t1) WHERE y<5 ORDER BY y263 }264} {1 2 3 4}265do_test select6-4.3 {266 execsql {267 SELECT DISTINCT y FROM (SELECT y FROM t1) WHERE y<5 ORDER BY y268 }269} {1 2 3 4}270do_test select6-4.4 {271 execsql {272 SELECT avg(y) FROM (SELECT DISTINCT y FROM t1) WHERE y<5 ORDER BY y273 }274} {2.5}275do_test select6-4.5 {276 execsql {277 SELECT avg(y) FROM (SELECT DISTINCT y FROM t1 WHERE y<5) ORDER BY y278 }279} {2.5}280 281do_test select6-5.1 {282 execsql {283 SELECT a,x,b FROM284 (SELECT x+3 AS 'a', x FROM t1 WHERE y=3) AS 'p',285 (SELECT x AS 'b' FROM t1 WHERE y=4) AS 'q'286 WHERE a=b287 ORDER BY a288 }289} {8 5 8 9 6 9 10 7 10}290do_test select6-5.2 {291 execsql {292 SELECT a,x,b FROM293 (SELECT x+3 AS 'a', x FROM t1 WHERE y=3),294 (SELECT x AS 'b' FROM t1 WHERE y=4)295 WHERE a=b296 ORDER BY a297 }298} {8 5 8 9 6 9 10 7 10}299 300# Tests of compound sub-selects301#302do_test select6-6.1 {303 execsql {304 DELETE FROM t1 WHERE x>4;305 SELECT * FROM t1306 }307} {1 1 2 2 3 2 4 3}308ifcapable compound {309 do_test select6-6.2 {310 execsql {311 SELECT * FROM (312 SELECT x AS 'a' FROM t1 UNION ALL SELECT x+10 AS 'a' FROM t1313 ) ORDER BY a;314 }315 } {1 2 3 4 11 12 13 14}316 do_test select6-6.3 {317 execsql {318 SELECT * FROM (319 SELECT x AS 'a' FROM t1 UNION ALL SELECT x+1 AS 'a' FROM t1320 ) ORDER BY a;321 }322 } {1 2 2 3 3 4 4 5}323 do_test select6-6.4 {324 execsql {325 SELECT * FROM (326 SELECT x AS 'a' FROM t1 UNION SELECT x+1 AS 'a' FROM t1327 ) ORDER BY a;328 }329 } {1 2 3 4 5}330 do_test select6-6.5 {331 execsql {332 SELECT * FROM (333 SELECT x AS 'a' FROM t1 INTERSECT SELECT x+1 AS 'a' FROM t1334 ) ORDER BY a;335 }336 } {2 3 4}337 do_test select6-6.6 {338 execsql {339 SELECT * FROM (340 SELECT x AS 'a' FROM t1 EXCEPT SELECT x*2 AS 'a' FROM t1341 ) ORDER BY a;342 }343 } {1 3}344} ;# ifcapable compound345 346# Subselects with no FROM clause347#348do_test select6-7.1 {349 execsql {350 SELECT * FROM (SELECT 1)351 }352} {1}353do_test select6-7.2 {354 execsql {355 SELECT c,b,a,* FROM (SELECT 1 AS 'a', 2 AS 'b', 'abc' AS 'c')356 }357} {abc 2 1 1 2 abc}358do_test select6-7.3 {359 execsql {360 SELECT c,b,a,* FROM (SELECT 1 AS 'a', 2 AS 'b', 'abc' AS 'c' WHERE 0)361 }362} {}363do_test select6-7.4 {364 execsql2 {365 SELECT c,b,a,* FROM (SELECT 1 AS 'a', 2 AS 'b', 'abc' AS 'c' WHERE 1)366 }367} {c abc b 2 a 1 a 1 b 2 c abc}368 369# The remaining tests in this file depend on the EXPLAIN keyword.370# Skip these tests if EXPLAIN is disabled in the current build.371#372ifcapable {!explain} {373 finish_test374 return375}376 377# The following procedure compiles the SQL given as an argument and returns378# TRUE if that SQL uses any transient tables and returns FALSE if no379# transient tables are used. This is used to make sure that the380# sqliteFlattenSubquery() routine in select.c is doing its job.381#382proc is_flat {sql} {383 return [expr 0>[lsearch [execsql "EXPLAIN $sql"] OpenEphemeral]]384}385 386# Check that the flattener works correctly for deeply nested subqueries387# involving joins.388#389do_test select6-8.1 {390 execsql {391 BEGIN;392 CREATE TABLE t3(p,q);393 INSERT INTO t3 VALUES(1,11);394 INSERT INTO t3 VALUES(2,22);395 CREATE TABLE t4(q,r);396 INSERT INTO t4 VALUES(11,111);397 INSERT INTO t4 VALUES(22,222);398 COMMIT;399 SELECT * FROM t3 NATURAL JOIN t4;400 }401} {1 11 111 2 22 222}402do_test select6-8.2 {403 execsql {404 SELECT y, p, q, r FROM405 (SELECT t1.y AS y, t2.b AS b FROM t1, t2 WHERE t1.x=t2.a) AS m,406 (SELECT t3.p AS p, t3.q AS q, t4.r AS r FROM t3 NATURAL JOIN t4) as n407 WHERE y=p408 }409} {1 1 11 111 2 2 22 222 2 2 22 222}410# If view support is omitted from the build, then so is the query 411# "flattener". So omit this test and test select6-8.6 in that case.412ifcapable view {413do_test select6-8.3 {414 is_flat {415 SELECT y, p, q, r FROM416 (SELECT t1.y AS y, t2.b AS b FROM t1, t2 WHERE t1.x=t2.a) AS m,417 (SELECT t3.p AS p, t3.q AS q, t4.r AS r FROM t3 NATURAL JOIN t4) as n418 WHERE y=p419 }420} {1}421} ;# ifcapable view422do_test select6-8.4 {423 execsql {424 SELECT DISTINCT y, p, q, r FROM425 (SELECT t1.y AS y, t2.b AS b FROM t1, t2 WHERE t1.x=t2.a) AS m,426 (SELECT t3.p AS p, t3.q AS q, t4.r AS r FROM t3 NATURAL JOIN t4) as n427 WHERE y=p428 }429} {1 1 11 111 2 2 22 222}430do_test select6-8.5 {431 execsql {432 SELECT * FROM 433 (SELECT y, p, q, r FROM434 (SELECT t1.y AS y, t2.b AS b FROM t1, t2 WHERE t1.x=t2.a) AS m,435 (SELECT t3.p AS p, t3.q AS q, t4.r AS r FROM t3 NATURAL JOIN t4) as n436 WHERE y=p) AS e,437 (SELECT r AS z FROM t4 WHERE q=11) AS f438 WHERE e.r=f.z439 }440} {1 1 11 111 111}441ifcapable view {442do_test select6-8.6 {443 is_flat {444 SELECT * FROM 445 (SELECT y, p, q, r FROM446 (SELECT t1.y AS y, t2.b AS b FROM t1, t2 WHERE t1.x=t2.a) AS m,447 (SELECT t3.p AS p, t3.q AS q, t4.r AS r FROM t3 NATURAL JOIN t4) as n448 WHERE y=p) AS e,449 (SELECT r AS z FROM t4 WHERE q=11) AS f450 WHERE e.r=f.z451 }452} {1}453} ;# ifcapable view454 455# Ticket #1634456#457do_test select6-9.1 {458 execsql {459 SELECT a.x, b.x FROM t1 AS a, (SELECT x FROM t1 LIMIT 2) AS b460 ORDER BY 1, 2461 }462} {1 1 1 2 2 1 2 2 3 1 3 2 4 1 4 2}463do_test select6-9.2 {464 execsql {465 SELECT x FROM (SELECT x FROM t1 LIMIT 2);466 }467} {1 2}468do_test select6-9.3 {469 execsql {470 SELECT x FROM (SELECT x FROM t1 LIMIT 2 OFFSET 1);471 }472} {2 3}473do_test select6-9.4 {474 execsql {475 SELECT x FROM (SELECT x FROM t1) LIMIT 2;476 }477} {1 2}478do_test select6-9.5 {479 execsql {480 SELECT x FROM (SELECT x FROM t1) LIMIT 2 OFFSET 1;481 }482} {2 3}483do_test select6-9.6 {484 execsql {485 SELECT x FROM (SELECT x FROM t1 LIMIT 2) LIMIT 3;486 }487} {1 2}488do_test select6-9.7 {489 execsql {490 SELECT x FROM (SELECT x FROM t1 LIMIT -1) LIMIT 3;491 }492} {1 2 3}493do_test select6-9.8 {494 execsql {495 SELECT x FROM (SELECT x FROM t1 LIMIT -1);496 }497} {1 2 3 4}498do_test select6-9.9 {499 execsql {500 SELECT x FROM (SELECT x FROM t1 LIMIT -1 OFFSET 1);501 }502} {2 3 4}503do_test select6-9.10 {504 execsql {505 SELECT x, y FROM (SELECT x, (SELECT 10+x) y FROM t1 LIMIT -1 OFFSET 1);506 }507} {2 12 3 13 4 14}508do_test select6-9.11 {509 execsql {510 SELECT x, y FROM (SELECT x, (SELECT 10)+x y FROM t1 LIMIT -1 OFFSET 1);511 }512} {2 12 3 13 4 14}513 514 515#-------------------------------------------------------------------------516# Test that if a UNION ALL sub-query that would otherwise be eligible for517# flattening consists of two or more SELECT statements that do not all 518# return the same number of result columns, the error is detected.519#520do_execsql_test 10.1 {521 CREATE TABLE t(i,j,k);522 CREATE TABLE j(l,m);523 CREATE TABLE k(o);524}525 526set err [list 1 {SELECTs to the left and right of UNION ALL do not have the same number of result columns}]527 528do_execsql_test 10.2 {529 SELECT * FROM (SELECT * FROM t), j;530}531do_catchsql_test 10.3 {532 SELECT * FROM t UNION ALL SELECT * FROM j533} $err534do_catchsql_test 10.4 {535 SELECT * FROM (SELECT i FROM t UNION ALL SELECT l, m FROM j)536} $err537do_catchsql_test 10.5 {538 SELECT * FROM (SELECT j FROM t UNION ALL SELECT * FROM j)539} $err540do_catchsql_test 10.6 {541 SELECT * FROM (SELECT * FROM t UNION ALL SELECT * FROM j)542} $err543do_catchsql_test 10.7 {544 SELECT * FROM (545 SELECT * FROM t UNION ALL 546 SELECT l,m,l FROM j UNION ALL547 SELECT * FROM k548 )549} $err550do_catchsql_test 10.8 {551 SELECT * FROM (552 SELECT * FROM k UNION ALL553 SELECT * FROM t UNION ALL 554 SELECT l,m,l FROM j 555 )556} $err557 558# 2015-02-09 Ticket [2f7170d73bf9abf80339187aa3677dce3dbcd5ca]559# "misuse of aggregate" error if aggregate column from FROM560# subquery is used in correlated subquery 561#562do_execsql_test 11.1 {563 DROP TABLE IF EXISTS t1;564 CREATE TABLE t1(w INT, x INT);565 INSERT INTO t1(w,x)566 VALUES(1,10),(2,20),(3,30),567 (2,21),(3,31),568 (3,32);569 CREATE INDEX t1wx ON t1(w,x);570 571 DROP TABLE IF EXISTS t2;572 CREATE TABLE t2(w INT, y VARCHAR(8));573 INSERT INTO t2(w,y) VALUES(1,'one'),(2,'two'),(3,'three'),(4,'four');574 CREATE INDEX t2wy ON t2(w,y);575 576 SELECT cnt, xyz, (SELECT y FROM t2 WHERE w=cnt), '|'577 FROM (SELECT count(*) AS cnt, w AS xyz FROM t1 GROUP BY 2)578 ORDER BY cnt, xyz;579} {1 1 one | 2 2 two | 3 3 three |}580do_execsql_test 11.2 {581 SELECT cnt, xyz, lower((SELECT y FROM t2 WHERE w=cnt)), '|'582 FROM (SELECT count(*) AS cnt, w AS xyz FROM t1 GROUP BY 2)583 ORDER BY cnt, xyz;584} {1 1 one | 2 2 two | 3 3 three |}585do_execsql_test 11.3 {586 SELECT cnt, xyz, '|'587 FROM (SELECT count(*) AS cnt, w AS xyz FROM t1 GROUP BY 2)588 WHERE (SELECT y FROM t2 WHERE w=cnt)!='two'589 ORDER BY cnt, xyz;590} {1 1 | 3 3 |}591do_execsql_test 11.4 {592 SELECT cnt, xyz, '|'593 FROM (SELECT count(*) AS cnt, w AS xyz FROM t1 GROUP BY 2)594 ORDER BY lower((SELECT y FROM t2 WHERE w=cnt));595} {1 1 | 3 3 | 2 2 |}596do_execsql_test 11.5 {597 SELECT cnt, xyz, 598 CASE WHEN (SELECT y FROM t2 WHERE w=cnt)=='two'599 THEN 'aaa' ELSE 'bbb'600 END, '|'601 FROM (SELECT count(*) AS cnt, w AS xyz FROM t1 GROUP BY 2)602 ORDER BY +cnt;603} {1 1 bbb | 2 2 aaa | 3 3 bbb |}604 605do_execsql_test 11.100 {606 DROP TABLE t1;607 DROP TABLE t2;608 CREATE TABLE t1(x);609 CREATE TABLE t2(y, z);610 SELECT ( SELECT y FROM t2 WHERE z = cnt )611 FROM ( SELECT count(*) AS cnt FROM t1 );612} {{}}613 614# 2019-05-29 ticket https://sqlite.org/src/info/c41afac34f15781f615# A LIMIT clause in a subquery is incorrectly applied to a subquery.616#617do_execsql_test 12.100 {618 DROP TABLE t1;619 DROP TABLE t2;620 CREATE TABLE t1(a);621 INSERT INTO t1 VALUES(1);622 INSERT INTO t1 VALUES(2);623 CREATE TABLE t2(b);624 INSERT INTO t2 VALUES(3);625 SELECT * FROM (626 SELECT * FROM (SELECT * FROM t1 LIMIT 1)627 UNION ALL628 SELECT * from t2);629} {1 3}630 631#-------------------------------------------------------------------------632reset_db633do_execsql_test 13.100 {634 635 CREATE TABLE t1(y INT);636 INSERT INTO t1 (y) VALUES (1);637 638 CREATE TABLE t2(x INTEGER);639 INSERT INTO t2 VALUES(0);640 641 CREATE TABLE empty1(z);642}643 644do_execsql_test 13.110 {645 SELECT t1.y 646 FROM ( SELECT 'AAA' ) 647 INNER JOIN (648 SELECT 1 AS abc FROM (649 SELECT 1 FROM t2 LEFT JOIN empty1650 )651 ) AS sub0 ON sub0.abc652 , t1653 RIGHT JOIN (SELECT 'BBB' FROM ( SELECT 'CCC' ))654} {1}655 656do_execsql_test 13.120 {657 SELECT t1.y 658 FROM ( SELECT 'AAA' ) 659 INNER JOIN (660 SELECT 1 AS abc FROM (661 SELECT 1 FROM t2 LEFT JOIN empty1662 )663 ) AS sub0 ON sub0.abc664 , t1665 RIGHT JOIN (SELECT 'BBB' FROM ( SELECT 'CCC' ))666 WHERE t1.y667} {1}668 669 670finish_test671