# 2002-05-24 # # 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. # # This file implements tests for joins, including outer joins. # set testdir [file dirname $argv0] source $testdir/tester.tcl do_test join-1.1 { execsql { CREATE TABLE t1(a,b,c); INSERT INTO t1 VALUES(1,2,3); INSERT INTO t1 VALUES(2,3,4); INSERT INTO t1 VALUES(3,4,5); SELECT * FROM t1; } } {1 2 3 2 3 4 3 4 5} do_test join-1.2 { execsql { CREATE TABLE t2(b,c,d); INSERT INTO t2 VALUES(1,2,3); INSERT INTO t2 VALUES(2,3,4); INSERT INTO t2 VALUES(3,4,5); SELECT * FROM t2; } } {1 2 3 2 3 4 3 4 5} # A FROM clause of the form: ",
ON " is not # allowed by the SQLite syntax diagram, nor by any other SQL database # engine that we are aware of. Nevertheless, historic versions of # SQLite have allowed it. We need to continue to support it moving # forward to prevent breakage of legacy applications. Though, we will # not advertise it as being supported. # do_execsql_test join-1.2.1 { SELECT t1.rowid, t2.rowid, '|' FROM t1, t2 ON t1.a=t2.b; } {1 1 | 2 2 | 3 3 |} do_test join-1.3 { execsql2 { SELECT * FROM t1 NATURAL JOIN t2; } } {a 1 b 2 c 3 d 4 a 2 b 3 c 4 d 5} do_test join-1.3.1 { execsql2 { SELECT * FROM t2 NATURAL JOIN t1; } } {b 2 c 3 d 4 a 1 b 3 c 4 d 5 a 2} do_test join-1.3.2 { execsql2 { SELECT * FROM t2 AS x NATURAL JOIN t1; } } {b 2 c 3 d 4 a 1 b 3 c 4 d 5 a 2} do_test join-1.3.3 { execsql2 { SELECT * FROM t2 NATURAL JOIN t1 AS y; } } {b 2 c 3 d 4 a 1 b 3 c 4 d 5 a 2} do_test join-1.3.4 { execsql { SELECT b FROM t1 NATURAL JOIN t2; } } {2 3} # ticket #3522 do_test join-1.3.5 { execsql2 { SELECT t2.* FROM t2 NATURAL JOIN t1 } } {b 2 c 3 d 4 b 3 c 4 d 5} do_test join-1.3.6 { execsql2 { SELECT xyzzy.* FROM t2 AS xyzzy NATURAL JOIN t1 } } {b 2 c 3 d 4 b 3 c 4 d 5} do_test join-1.3.7 { execsql2 { SELECT t1.* FROM t2 NATURAL JOIN t1 } } {a 1 b 2 c 3 a 2 b 3 c 4} do_test join-1.3.8 { execsql2 { SELECT xyzzy.* FROM t2 NATURAL JOIN t1 AS xyzzy } } {a 1 b 2 c 3 a 2 b 3 c 4} do_test join-1.3.9 { execsql2 { SELECT aaa.*, bbb.* FROM t2 AS aaa NATURAL JOIN t1 AS bbb } } {b 2 c 3 d 4 a 1 b 2 c 3 b 3 c 4 d 5 a 2 b 3 c 4} do_test join-1.3.10 { execsql2 { SELECT t1.*, t2.* FROM t2 NATURAL JOIN t1 } } {a 1 b 2 c 3 b 2 c 3 d 4 a 2 b 3 c 4 b 3 c 4 d 5} do_test join-1.4.1 { execsql2 { SELECT * FROM t1 INNER JOIN t2 USING(b,c); } } {a 1 b 2 c 3 d 4 a 2 b 3 c 4 d 5} do_test join-1.4.2 { execsql2 { SELECT * FROM t1 AS x INNER JOIN t2 USING(b,c); } } {a 1 b 2 c 3 d 4 a 2 b 3 c 4 d 5} do_test join-1.4.3 { execsql2 { SELECT * FROM t1 INNER JOIN t2 AS y USING(b,c); } } {a 1 b 2 c 3 d 4 a 2 b 3 c 4 d 5} do_test join-1.4.4 { execsql2 { SELECT * FROM t1 AS x INNER JOIN t2 AS y USING(b,c); } } {a 1 b 2 c 3 d 4 a 2 b 3 c 4 d 5} do_test join-1.4.5 { execsql { SELECT b FROM t1 JOIN t2 USING(b); } } {2 3} # Ticket #3522 do_test join-1.4.6 { execsql2 { SELECT t1.* FROM t1 JOIN t2 USING(b); } } {a 1 b 2 c 3 a 2 b 3 c 4} do_test join-1.4.7 { execsql2 { SELECT t2.* FROM t1 JOIN t2 USING(b); } } {b 2 c 3 d 4 b 3 c 4 d 5} do_test join-1.5 { execsql2 { SELECT * FROM t1 INNER JOIN t2 USING(b); } } {a 1 b 2 c 3 c 3 d 4 a 2 b 3 c 4 c 4 d 5} do_test join-1.6 { execsql2 { SELECT * FROM t1 INNER JOIN t2 USING(c); } } {a 1 b 2 c 3 b 2 d 4 a 2 b 3 c 4 b 3 d 5} do_test join-1.7 { execsql2 { SELECT * FROM t1 INNER JOIN t2 USING(c,b); } } {a 1 b 2 c 3 d 4 a 2 b 3 c 4 d 5} do_test join-1.8 { execsql { SELECT * FROM t1 NATURAL CROSS JOIN t2; } } {1 2 3 4 2 3 4 5} do_test join-1.9 { execsql { SELECT * FROM t1 CROSS JOIN t2 USING(b,c); } } {1 2 3 4 2 3 4 5} do_test join-1.10 { execsql { SELECT * FROM t1 NATURAL INNER JOIN t2; } } {1 2 3 4 2 3 4 5} do_test join-1.11 { execsql { SELECT * FROM t1 INNER JOIN t2 USING(b,c); } } {1 2 3 4 2 3 4 5} do_test join-1.12 { execsql { SELECT * FROM t1 natural inner join t2; } } {1 2 3 4 2 3 4 5} ifcapable subquery { do_test join-1.13 { execsql2 { SELECT * FROM t1 NATURAL JOIN (SELECT b as 'c', c as 'd', d as 'e' FROM t2) as t3 } } {a 1 b 2 c 3 d 4 e 5} do_test join-1.14 { execsql2 { SELECT * FROM (SELECT b as 'c', c as 'd', d as 'e' FROM t2) as 'tx' NATURAL JOIN t1 } } {c 3 d 4 e 5 a 1 b 2} } do_test join-1.15 { execsql { CREATE TABLE t3(c,d,e); INSERT INTO t3 VALUES(2,3,4); INSERT INTO t3 VALUES(3,4,5); INSERT INTO t3 VALUES(4,5,6); SELECT * FROM t3; } } {2 3 4 3 4 5 4 5 6} do_test join-1.16 { execsql { SELECT * FROM t1 natural join t2 natural join t3; } } {1 2 3 4 5 2 3 4 5 6} do_test join-1.17 { execsql2 { SELECT * FROM t1 natural join t2 natural join t3; } } {a 1 b 2 c 3 d 4 e 5 a 2 b 3 c 4 d 5 e 6} do_test join-1.18 { execsql { CREATE TABLE t4(d,e,f); INSERT INTO t4 VALUES(2,3,4); INSERT INTO t4 VALUES(3,4,5); INSERT INTO t4 VALUES(4,5,6); SELECT * FROM t4; } } {2 3 4 3 4 5 4 5 6} do_test join-1.19.1 { execsql { SELECT * FROM t1 natural join t2 natural join t4; } } {1 2 3 4 5 6} do_test join-1.19.2 { execsql2 { SELECT * FROM t1 natural join t2 natural join t4; } } {a 1 b 2 c 3 d 4 e 5 f 6} do_test join-1.20 { execsql { SELECT * FROM t1 natural join t2 natural join t3 WHERE t1.a=1 } } {1 2 3 4 5} do_test join-2.1 { execsql { SELECT * FROM t1 NATURAL LEFT JOIN t2; } } {1 2 3 4 2 3 4 5 3 4 5 {}} # ticket #3522 do_test join-2.1.1 { execsql2 { SELECT * FROM t1 NATURAL LEFT JOIN t2; } } {a 1 b 2 c 3 d 4 a 2 b 3 c 4 d 5 a 3 b 4 c 5 d {}} do_test join-2.1.2 { execsql2 { SELECT t1.* FROM t1 NATURAL LEFT JOIN t2; } } {a 1 b 2 c 3 a 2 b 3 c 4 a 3 b 4 c 5} do_test join-2.1.3 { execsql2 { SELECT t2.* FROM t1 NATURAL LEFT JOIN t2; } } {b 2 c 3 d 4 b 3 c 4 d 5 b {} c {} d {}} do_test join-2.2 { execsql { SELECT * FROM t2 NATURAL LEFT OUTER JOIN t1; } } {1 2 3 {} 2 3 4 1 3 4 5 2} do_test join-2.3 { catchsql { SELECT * FROM t1 NATURAL RIGHT OUTER JOIN t2; } } {1 {RIGHT and FULL OUTER JOINs are not currently supported}} do_test join-2.4 { execsql { SELECT * FROM t1 LEFT JOIN t2 ON t1.a=t2.d } } {1 2 3 {} {} {} 2 3 4 {} {} {} 3 4 5 1 2 3} do_test join-2.5 { execsql { SELECT * FROM t1 LEFT JOIN t2 ON t1.a=t2.d WHERE t1.a>1 } } {2 3 4 {} {} {} 3 4 5 1 2 3} do_test join-2.6 { execsql { SELECT * FROM t1 LEFT JOIN t2 ON t1.a=t2.d WHERE t2.b IS NULL OR t2.b>1 } } {1 2 3 {} {} {} 2 3 4 {} {} {}} do_test join-3.1 { catchsql { SELECT * FROM t1 NATURAL JOIN t2 ON t1.a=t2.b; } } {1 {a NATURAL join may not have an ON or USING clause}} do_test join-3.2 { catchsql { SELECT * FROM t1 NATURAL JOIN t2 USING(b); } } {1 {a NATURAL join may not have an ON or USING clause}} do_test join-3.3 { catchsql { SELECT * FROM t1 JOIN t2 ON t1.a=t2.b USING(b); } } {1 {cannot have both ON and USING clauses in the same join}} do_test join-3.4.1 { catchsql { SELECT * FROM t1 JOIN t2 USING(a); } } {1 {cannot join using column a - column not present in both tables}} do_test join-3.4.2 { catchsql { SELECT * FROM t1 JOIN t2 USING(d); } } {1 {cannot join using column d - column not present in both tables}} do_test join-3.5 { catchsql { SELECT * FROM t1 USING(a) } } {1 {a JOIN clause is required before USING}} do_test join-3.6 { catchsql { SELECT * FROM t1 JOIN t2 ON t3.a=t2.b; } } {1 {no such column: t3.a}} do_test join-3.7 { catchsql { SELECT * FROM t1 INNER OUTER JOIN t2; } } {1 {unknown or unsupported join type: INNER OUTER}} do_test join-3.8 { catchsql { SELECT * FROM t1 INNER OUTER CROSS JOIN t2; } } {1 {unknown or unsupported join type: INNER OUTER CROSS}} do_test join-3.9 { catchsql { SELECT * FROM t1 OUTER NATURAL INNER JOIN t2; } } {1 {unknown or unsupported join type: OUTER NATURAL INNER}} do_test join-3.10 { catchsql { SELECT * FROM t1 LEFT BOGUS JOIN t2; } } {1 {unknown or unsupported join type: LEFT BOGUS}} do_test join-3.11 { catchsql { SELECT * FROM t1 INNER BOGUS CROSS JOIN t2; } } {1 {unknown or unsupported join type: INNER BOGUS CROSS}} do_test join-3.12 { catchsql { SELECT * FROM t1 NATURAL AWK SED JOIN t2; } } {1 {unknown or unsupported join type: NATURAL AWK SED}} do_test join-4.1 { execsql { BEGIN; CREATE TABLE t5(a INTEGER PRIMARY KEY); CREATE TABLE t6(a INTEGER); INSERT INTO t6 VALUES(NULL); INSERT INTO t6 VALUES(NULL); INSERT INTO t6 SELECT * FROM t6; INSERT INTO t6 SELECT * FROM t6; INSERT INTO t6 SELECT * FROM t6; INSERT INTO t6 SELECT * FROM t6; INSERT INTO t6 SELECT * FROM t6; INSERT INTO t6 SELECT * FROM t6; COMMIT; } execsql { SELECT * FROM t6 NATURAL JOIN t5; } } {} do_test join-4.2 { execsql { SELECT * FROM t6, t5 WHERE t6.at5.a; } } {} do_test join-4.4 { execsql { UPDATE t6 SET a='xyz'; SELECT * FROM t6 NATURAL JOIN t5; } } {} do_test join-4.6 { execsql { SELECT * FROM t6, t5 WHERE t6.at5.a; } } {} do_test join-4.8 { execsql { UPDATE t6 SET a=1; SELECT * FROM t6 NATURAL JOIN t5; } } {} do_test join-4.9 { execsql { SELECT * FROM t6, t5 WHERE t6.at5.a; } } {} do_test join-5.1 { execsql { BEGIN; create table centros (id integer primary key, centro); INSERT INTO centros VALUES(1,'xxx'); create table usuarios (id integer primary key, nombre, apellidos, idcentro integer); INSERT INTO usuarios VALUES(1,'a','aa',1); INSERT INTO usuarios VALUES(2,'b','bb',1); INSERT INTO usuarios VALUES(3,'c','cc',NULL); create index idcentro on usuarios (idcentro); END; select usuarios.id, usuarios.nombre, centros.centro from usuarios left outer join centros on usuarios.idcentro = centros.id; } } {1 a xxx 2 b xxx 3 c {}} # A test for ticket #247. # do_test join-7.1 { execsql { CREATE TABLE t7 (x, y); INSERT INTO t7 VALUES ("pa1", 1); INSERT INTO t7 VALUES ("pa2", NULL); INSERT INTO t7 VALUES ("pa3", NULL); INSERT INTO t7 VALUES ("pa4", 2); INSERT INTO t7 VALUES ("pa30", 131); INSERT INTO t7 VALUES ("pa31", 130); INSERT INTO t7 VALUES ("pa28", NULL); CREATE TABLE t8 (a integer primary key, b); INSERT INTO t8 VALUES (1, "pa1"); INSERT INTO t8 VALUES (2, "pa4"); INSERT INTO t8 VALUES (3, NULL); INSERT INTO t8 VALUES (4, NULL); INSERT INTO t8 VALUES (130, "pa31"); INSERT INTO t8 VALUES (131, "pa30"); SELECT coalesce(t8.a,999) from t7 LEFT JOIN t8 on y=a; } } {1 999 999 2 131 130 999} # Make sure a left join where the right table is really a view that # is itself a join works right. Ticket #306. # ifcapable view { do_test join-8.1 { execsql { BEGIN; CREATE TABLE t9(a INTEGER PRIMARY KEY, b); INSERT INTO t9 VALUES(1,11); INSERT INTO t9 VALUES(2,22); CREATE TABLE t10(x INTEGER PRIMARY KEY, y); INSERT INTO t10 VALUES(1,2); INSERT INTO t10 VALUES(3,3); CREATE TABLE t11(p INTEGER PRIMARY KEY, q); INSERT INTO t11 VALUES(2,111); INSERT INTO t11 VALUES(3,333); CREATE VIEW v10_11 AS SELECT x, q FROM t10, t11 WHERE t10.y=t11.p; COMMIT; SELECT * FROM t9 LEFT JOIN v10_11 ON( a=x ); } } {1 11 1 111 2 22 {} {}} ifcapable subquery { do_test join-8.2 { execsql { SELECT * FROM t9 LEFT JOIN (SELECT x, q FROM t10, t11 WHERE t10.y=t11.p) ON( a=x); } } {1 11 1 111 2 22 {} {}} } do_test join-8.3 { execsql { SELECT * FROM v10_11 LEFT JOIN t9 ON( a=x ); } } {1 111 1 11 3 333 {} {}} ifcapable subquery { # Constant expressions in a subquery that is the right element of a # LEFT JOIN evaluate to NULL for rows where the LEFT JOIN does not # match. Ticket #3300 do_test join-8.4 { execsql { SELECT * FROM t9 LEFT JOIN (SELECT 44, p, q FROM t11) AS sub1 ON p=a } } {1 11 {} {} {} 2 22 44 2 111} } } ;# ifcapable view # Ticket #350 describes a scenario where LEFT OUTER JOIN does not # function correctly if the right table in the join is really # subquery. # # To test the problem, we generate the same LEFT OUTER JOIN in two # separate selects but with on using a subquery and the other calling # the table directly. Then connect the two SELECTs using an EXCEPT. # Both queries should generate the same results so the answer should # be an empty set. # ifcapable compound { do_test join-9.1 { execsql { BEGIN; CREATE TABLE t12(a,b); INSERT INTO t12 VALUES(1,11); INSERT INTO t12 VALUES(2,22); CREATE TABLE t13(b,c); INSERT INTO t13 VALUES(22,222); COMMIT; } } {} ifcapable subquery { do_test join-9.1.1 { execsql { SELECT * FROM t12 NATURAL LEFT JOIN t13 EXCEPT SELECT * FROM t12 NATURAL LEFT JOIN (SELECT * FROM t13 WHERE b>0); } } {} } ifcapable view { do_test join-9.2 { execsql { CREATE VIEW v13 AS SELECT * FROM t13 WHERE b>0; SELECT * FROM t12 NATURAL LEFT JOIN t13 EXCEPT SELECT * FROM t12 NATURAL LEFT JOIN v13; } } {} } ;# ifcapable view } ;# ifcapable compound ifcapable subquery { # Ticket #1697: Left Join WHERE clause terms that contain an # aggregate subquery. # do_test join-10.1 { execsql { CREATE TABLE t21(a,b,c); CREATE TABLE t22(p,q); CREATE INDEX i22 ON t22(q); SELECT a FROM t21 LEFT JOIN t22 ON b=p WHERE q= (SELECT max(m.q) FROM t22 m JOIN t21 n ON n.b=m.p WHERE n.c=1); } } {} # Test a LEFT JOIN when the right-hand side of hte join is an empty # sub-query. Seems fine. # do_test join-10.2 { execsql { CREATE TABLE t23(a, b, c); CREATE TABLE t24(a, b, c); INSERT INTO t23 VALUES(1, 2, 3); } execsql { SELECT * FROM t23 LEFT JOIN t24; } } {1 2 3 {} {} {}} do_test join-10.3 { execsql { SELECT * FROM t23 LEFT JOIN (SELECT * FROM t24); } } {1 2 3 {} {} {}} } ;# ifcapable subquery #------------------------------------------------------------------------- # The following tests are to ensure that bug b73fb0bd64 is fixed. # do_test join-11.1 { drop_all_tables execsql { CREATE TABLE t1(a INTEGER PRIMARY KEY, b TEXT); CREATE TABLE t2(a INTEGER PRIMARY KEY, b TEXT); INSERT INTO t1 VALUES(1,'abc'); INSERT INTO t1 VALUES(2,'def'); INSERT INTO t2 VALUES(1,'abc'); INSERT INTO t2 VALUES(2,'def'); SELECT * FROM t1 NATURAL JOIN t2; } } {1 abc 2 def} do_test join-11.2 { execsql { SELECT a FROM t1 JOIN t1 USING (a)} } {1 2} do_test join-11.3 { execsql { SELECT a FROM t1 JOIN t1 AS t2 USING (a)} } {1 2} do_test join-11.3 { execsql { SELECT * FROM t1 NATURAL JOIN t1 AS t2} } {1 abc 2 def} do_test join-11.4 { execsql { SELECT * FROM t1 NATURAL JOIN t1 } } {1 abc 2 def} do_test join-11.5 { drop_all_tables execsql { CREATE TABLE t1(a COLLATE nocase, b); CREATE TABLE t2(a, b); INSERT INTO t1 VALUES('ONE', 1); INSERT INTO t1 VALUES('two', 2); INSERT INTO t2 VALUES('one', 1); INSERT INTO t2 VALUES('two', 2); } } {} do_test join-11.6 { execsql { SELECT * FROM t1 NATURAL JOIN t2 } } {ONE 1 two 2} do_test join-11.7 { execsql { SELECT * FROM t2 NATURAL JOIN t1 } } {two 2} do_test join-11.8 { drop_all_tables execsql { CREATE TABLE t1(a, b TEXT); CREATE TABLE t2(b INTEGER, a); INSERT INTO t1 VALUES('one', '1.0'); INSERT INTO t1 VALUES('two', '2'); INSERT INTO t2 VALUES(1, 'one'); INSERT INTO t2 VALUES(2, 'two'); } } {} do_test join-11.9 { execsql { SELECT * FROM t1 NATURAL JOIN t2 } } {one 1.0 two 2} do_test join-11.10 { execsql { SELECT * FROM t2 NATURAL JOIN t1 } } {1 one 2 two} #------------------------------------------------------------------------- # Test that at most 64 tables are allowed in a join. # do_execsql_test join-12.1 { CREATE TABLE t14(x); INSERT INTO t14 VALUES('abcdefghij'); } proc jointest {tn nTbl res} { set sql "SELECT 1 FROM [string repeat t14, [expr $nTbl-1]] t14;" uplevel [list do_catchsql_test $tn $sql $res] } jointest join-12.2 30 {0 1} jointest join-12.3 63 {0 1} jointest join-12.4 64 {0 1} jointest join-12.5 65 {1 {at most 64 tables in a join}} jointest join-12.6 66 {1 {at most 64 tables in a join}} jointest join-12.7 127 {1 {at most 64 tables in a join}} jointest join-12.8 128 {1 {at most 64 tables in a join}} # As of 2019-01-17, the number of elements in a SrcList is limited # to 200. The following tests still run, but the answer is now # an SQLITE_NOMEM error. # # jointest join-12.9 1000 {1 {at most 64 tables in a join}} # # If SQLite is built with SQLITE_MEMDEBUG, then the huge number of realloc() # calls made by the following test cases are too time consuming to run. # Without SQLITE_MEMDEBUG, realloc() is fast enough that these are not # a problem. # # ifcapable pragma&&compileoption_diags { # if {[lsearch [db eval {PRAGMA compile_options}] MEMDEBUG]<0} { # jointest join-12.10 65534 {1 {at most 64 tables in a join}} # jointest join-12.11 65535 {1 {too many references to "t14": max 65535}} # jointest join-12.12 65536 {1 {too many references to "t14": max 65535}} # jointest join-12.13 65537 {1 {too many references to "t14": max 65535}} # } # } #------------------------------------------------------------------------- # Test a problem with reordering tables following a LEFT JOIN. # do_execsql_test join-13.0 { CREATE TABLE aa(a); CREATE TABLE bb(b); CREATE TABLE cc(c); INSERT INTO aa VALUES(45); INSERT INTO cc VALUES(45); INSERT INTO cc VALUES(45); } do_execsql_test join-13.1 { SELECT * FROM aa LEFT JOIN bb, cc WHERE cc.c=aa.a; } {45 {} 45 45 {} 45} # In the following, the order of [cc] and [bb] must not be exchanged, even # though this would be helpful if the query used an inner join. do_execsql_test join-13.2 { CREATE INDEX ccc ON cc(c); SELECT * FROM aa LEFT JOIN bb, cc WHERE cc.c=aa.a; } {45 {} 45 45 {} 45} # Verify that that iTable attributes the TK_IF_NULL_ROW operators in the # expression tree are correctly updated by the query flattener. This was # a bug discovered on 2017-05-22 by Mark Brand. # do_execsql_test join-14.1 { SELECT * FROM (SELECT 1 a) AS x LEFT JOIN (SELECT 1, * FROM (SELECT * FROM (SELECT 1))); } {1 1 1} do_execsql_test join-14.2 { SELECT * FROM (SELECT 1 a) AS x LEFT JOIN (SELECT 1, * FROM (SELECT * FROM (SELECT * FROM (SELECT 1)))) AS y JOIN (SELECT * FROM (SELECT 9)) AS z; } {1 1 1 9} do_execsql_test join-14.3 { SELECT * FROM (SELECT 111) LEFT JOIN (SELECT cc+222, * FROM (SELECT * FROM (SELECT 333 cc))); } {111 555 333} do_execsql_test join-14.4 { DROP TABLE IF EXISTS t1; CREATE TABLE t1(c PRIMARY KEY, a TEXT(10000), b TEXT(10000)); SELECT * FROM (SELECT 111) LEFT JOIN (SELECT c+222 FROM t1) GROUP BY 1; } {111 {}} do_execsql_test join-14.5 { DROP TABLE IF EXISTS t1; CREATE TABLE t1(c PRIMARY KEY) WITHOUT ROWID; SELECT * FROM (SELECT 111) LEFT JOIN (SELECT c+222 FROM t1) GROUP BY 1; } {111 {}} # Verify the fix to ticket # https://www.sqlite.org/src/tktview/7fde638e94287d2c948cd9389 # db close sqlite3 db :memory: do_execsql_test join-14.10 { CREATE TABLE t1(a); INSERT INTO t1 VALUES(1),(2),(3); CREATE VIEW v2 AS SELECT a, 1 AS b FROM t1; CREATE TABLE t3(x); INSERT INTO t3 VALUES(2),(4); SELECT *, '|' FROM t3 LEFT JOIN v2 ON a=x WHERE b=1; } {2 2 1 |} do_execsql_test join-14.11 { SELECT *, '|' FROM t3 LEFT JOIN v2 ON a=x WHERE b+1=x; } {2 2 1 |} do_execsql_test join-14.12 { SELECT *, '|' FROM t3 LEFT JOIN v2 ON a=x ORDER BY b; } {4 {} {} | 2 2 1 |} # Verify the fix for ticket # https://www.sqlite.org/src/info/892fc34f173e99d8 # db close sqlite3 db :memory: do_execsql_test join-14.20 { CREATE TABLE t1(id INTEGER PRIMARY KEY); CREATE TABLE t2(id INTEGER PRIMARY KEY, c2 INTEGER); CREATE TABLE t3(id INTEGER PRIMARY KEY, c3 INTEGER); INSERT INTO t1(id) VALUES(456); INSERT INTO t3(id) VALUES(1),(2); SELECT t1.id, x2.id, x3.id FROM t1 LEFT JOIN (SELECT * FROM t2) AS x2 ON t1.id=x2.c2 LEFT JOIN t3 AS x3 ON x2.id=x3.c3; } {456 {} {}} # 2018-03-24. # E.Pasma discovered that the LEFT JOIN strength reduction optimization # was misbehaving. The problem turned out to be that the # sqlite3ExprImpliesNotNull() routine was saying that CASE expressions # like # # CASE WHEN true THEN true ELSE x=0 END # # could never be true if x is NULL. The following test cases verify # that this error has been resolved. # db close sqlite3 db :memory: do_execsql_test join-15.100 { CREATE TABLE t1(a INT, b INT); INSERT INTO t1 VALUES(1,2),(3,4); CREATE TABLE t2(x INT, y INT); SELECT *, 'x' FROM t1 LEFT JOIN t2 WHERE CASE WHEN FALSE THEN a=x ELSE 1 END; } {1 2 {} {} x 3 4 {} {} x} do_execsql_test join-15.105 { SELECT *, 'x' FROM t1 LEFT JOIN t2 WHERE a IN (1,3,x,y); } {1 2 {} {} x 3 4 {} {} x} do_execsql_test join-15.106a { SELECT *, 'x' FROM t1 LEFT JOIN t2 WHERE NOT ( 'x'='y' AND t2.y=1 ); } {1 2 {} {} x 3 4 {} {} x} do_execsql_test join-15.106b { SELECT *, 'x' FROM t1 LEFT JOIN t2 WHERE ~ ( 'x'='y' AND t2.y=1 ); } {1 2 {} {} x 3 4 {} {} x} do_execsql_test join-15.107 { SELECT *, 'x' FROM t1 LEFT JOIN t2 WHERE t2.y IS NOT 'abc' } {1 2 {} {} x 3 4 {} {} x} do_execsql_test join-15.110 { DROP TABLE t1; DROP TABLE t2; CREATE TABLE t1(a INTEGER PRIMARY KEY, b INTEGER); INSERT INTO t1(a,b) VALUES(1,0),(11,1),(12,1),(13,1),(121,12); CREATE INDEX t1b ON t1(b); CREATE TABLE t2(x INTEGER PRIMARY KEY); INSERT INTO t2(x) VALUES(0),(1); SELECT a1, a2, a3, a4, a5 FROM (SELECT a AS a1 FROM t1 WHERE b=0) JOIN (SELECT x AS x1 FROM t2) LEFT JOIN (SELECT a AS a2, b AS b2 FROM t1) ON x1 IS TRUE AND b2=a1 JOIN (SELECT x AS x2 FROM t2) ON x2<=CASE WHEN x1 THEN CASE WHEN a2 THEN 1 ELSE -1 END ELSE 0 END LEFT JOIN (SELECT a AS a3, b AS b3 FROM t1) ON x2 IS TRUE AND b3=a2 JOIN (SELECT x AS x3 FROM t2) ON x3<=CASE WHEN x2 THEN CASE WHEN a3 THEN 1 ELSE -1 END ELSE 0 END LEFT JOIN (SELECT a AS a4, b AS b4 FROM t1) ON x3 IS TRUE AND b4=a3 JOIN (SELECT x AS x4 FROM t2) ON x4<=CASE WHEN x3 THEN CASE WHEN a4 THEN 1 ELSE -1 END ELSE 0 END LEFT JOIN (SELECT a AS a5, b AS b5 FROM t1) ON x4 IS TRUE AND b5=a4 ORDER BY a1, a2, a3, a4, a5; } {1 {} {} {} {} 1 11 {} {} {} 1 12 {} {} {} 1 12 121 {} {} 1 13 {} {} {}} # 2019-02-05 Ticket https://www.sqlite.org/src/tktview/5948e09b8c415bc45da5c # Error in join due to the LEFT JOIN strength reduction optimization. # do_execsql_test join-16.100 { DROP TABLE IF EXISTS t1; DROP TABLE IF EXISTS t2; CREATE TABLE t1(a INT); INSERT INTO t1(a) VALUES(1); CREATE TABLE t2(b INT); SELECT a, b FROM t1 LEFT JOIN t2 ON 0 WHERE (b IS NOT NULL)=0; } {1 {}} # 2019-08-17 ticket https://sqlite.org/src/tktview/6710d2f7a13a299728ab # Ensure that constants that derive from the right-hand table of a LEFT JOIN # are never factored out, since they are not really constant. # do_execsql_test join-17.100 { DROP TABLE IF EXISTS t1; CREATE TABLE t1(x); INSERT INTO t1(x) VALUES(0),(1); SELECT * FROM t1 LEFT JOIN (SELECT abs(1) AS y FROM t1) ON x WHERE NOT(y='a'); } {1 1 1 1} do_execsql_test join-17.110 { SELECT * FROM t1 LEFT JOIN (SELECT abs(1)+2 AS y FROM t1) ON x WHERE NOT(y='a'); } {1 3 1 3} #------------------------------------------------------------------------- reset_db do_execsql_test join-18.1 { CREATE TABLE t0(a); CREATE TABLE t1(b); CREATE VIEW v0 AS SELECT a FROM t1 LEFT JOIN t0; INSERT INTO t1 VALUES (1); } {} do_execsql_test join-18.2 { SELECT * FROM v0 WHERE NOT(v0.a IS FALSE); } {{}} do_execsql_test join-18.3 { SELECT * FROM t1 LEFT JOIN t0 WHERE NOT(a IS FALSE); } {1 {}} do_execsql_test join-18.4 { SELECT NOT(v0.a IS FALSE) FROM v0 } {1} #------------------------------------------------------------------------- reset_db do_execsql_test join-19.0 { CREATE TABLE t1(a); CREATE TABLE t2(b); INSERT INTO t1(a) VALUES(0); CREATE VIEW v0(c) AS SELECT t2.b FROM t1 LEFT JOIN t2; } do_execsql_test join-19.1 { SELECT * FROM v0 WHERE v0.c NOTNULL NOTNULL; } {{}} do_execsql_test join-19.2 { SELECT * FROM t1 LEFT JOIN t2 } {0 {}} do_execsql_test join-19.3 { SELECT * FROM t1 LEFT JOIN t2 WHERE (b IS NOT NULL) IS NOT NULL; } {0 {}} do_execsql_test join-19.4 { SELECT (b IS NOT NULL) IS NOT NULL FROM t1 LEFT JOIN t2 } {1} do_execsql_test join-19.5 { SELECT * FROM t1 LEFT JOIN t2 WHERE (b IS NOT NULL AND b IS NOT NULL) IS NOT NULL; } {0 {}} finish_test