0a168377ad
in the ON clause of a LEFT JOIN. Ticket #2403. (CVS 4049) FossilOrigin-Name: 46fdd195483787eef209a9b8ad108eba147be6fa
111 lines
3.1 KiB
Plaintext
111 lines
3.1 KiB
Plaintext
# 2005 September 19
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#
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# The author disclaims copyright to this source code. In place of
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# a legal notice, here is a blessing:
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#
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# May you do good and not evil.
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# May you find forgiveness for yourself and forgive others.
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# May you share freely, never taking more than you give.
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#
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#***********************************************************************
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# This file implements regression tests for SQLite library.
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#
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# This file implements tests for left outer joins containing ON
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# clauses that restrict the scope of the left term of the join.
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#
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# $Id: join5.test,v 1.2 2007/06/08 00:20:48 drh Exp $
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set testdir [file dirname $argv0]
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source $testdir/tester.tcl
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do_test join5-1.1 {
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execsql {
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BEGIN;
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CREATE TABLE t1(a integer primary key, b integer, c integer);
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CREATE TABLE t2(x integer primary key, y);
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CREATE TABLE t3(p integer primary key, q);
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INSERT INTO t3 VALUES(11,'t3-11');
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INSERT INTO t3 VALUES(12,'t3-12');
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INSERT INTO t2 VALUES(11,'t2-11');
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INSERT INTO t2 VALUES(12,'t2-12');
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INSERT INTO t1 VALUES(1, 5, 0);
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INSERT INTO t1 VALUES(2, 11, 2);
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INSERT INTO t1 VALUES(3, 12, 1);
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COMMIT;
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}
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} {}
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do_test join5-1.2 {
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execsql {
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select * from t1 left join t2 on t1.b=t2.x and t1.c=1
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}
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} {1 5 0 {} {} 2 11 2 {} {} 3 12 1 12 t2-12}
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do_test join5-1.3 {
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execsql {
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select * from t1 left join t2 on t1.b=t2.x where t1.c=1
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}
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} {3 12 1 12 t2-12}
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do_test join5-1.4 {
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execsql {
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select * from t1 left join t2 on t1.b=t2.x and t1.c=1
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left join t3 on t1.b=t3.p and t1.c=2
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}
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} {1 5 0 {} {} {} {} 2 11 2 {} {} 11 t3-11 3 12 1 12 t2-12 {} {}}
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do_test join5-1.5 {
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execsql {
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select * from t1 left join t2 on t1.b=t2.x and t1.c=1
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left join t3 on t1.b=t3.p where t1.c=2
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}
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} {2 11 2 {} {} 11 t3-11}
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# Ticket #2403
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#
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do_test join5-2.1 {
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execsql {
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CREATE TABLE ab(a,b);
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INSERT INTO "ab" VALUES(1,2);
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INSERT INTO "ab" VALUES(3,NULL);
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CREATE TABLE xy(x,y);
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INSERT INTO "xy" VALUES(2,3);
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INSERT INTO "xy" VALUES(NULL,1);
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}
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execsql {SELECT * FROM xy LEFT JOIN ab ON 0}
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} {2 3 {} {} {} 1 {} {}}
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do_test join5-2.2 {
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execsql {SELECT * FROM xy LEFT JOIN ab ON 1}
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} {2 3 1 2 2 3 3 {} {} 1 1 2 {} 1 3 {}}
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do_test join5-2.3 {
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execsql {SELECT * FROM xy LEFT JOIN ab ON NULL}
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} {2 3 {} {} {} 1 {} {}}
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do_test join5-2.4 {
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execsql {SELECT * FROM xy LEFT JOIN ab ON 0 WHERE 0}
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} {}
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do_test join5-2.5 {
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execsql {SELECT * FROM xy LEFT JOIN ab ON 1 WHERE 0}
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} {}
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do_test join5-2.6 {
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execsql {SELECT * FROM xy LEFT JOIN ab ON NULL WHERE 0}
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} {}
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do_test join5-2.7 {
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execsql {SELECT * FROM xy LEFT JOIN ab ON 0 WHERE 1}
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} {2 3 {} {} {} 1 {} {}}
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do_test join5-2.8 {
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execsql {SELECT * FROM xy LEFT JOIN ab ON 1 WHERE 1}
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} {2 3 1 2 2 3 3 {} {} 1 1 2 {} 1 3 {}}
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do_test join5-2.9 {
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execsql {SELECT * FROM xy LEFT JOIN ab ON NULL WHERE 1}
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} {2 3 {} {} {} 1 {} {}}
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do_test join5-2.10 {
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execsql {SELECT * FROM xy LEFT JOIN ab ON 0 WHERE NULL}
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} {}
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do_test join5-2.11 {
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execsql {SELECT * FROM xy LEFT JOIN ab ON 1 WHERE NULL}
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} {}
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do_test join5-2.12 {
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execsql {SELECT * FROM xy LEFT JOIN ab ON NULL WHERE NULL}
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} {}
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finish_test
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