wasCSharpSQLite – Rev 1
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# 2007 June 8
#
# 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. The
# focus of this file is testing that terms in the ON clause of
# a LEFT OUTER JOIN are not used with indices. See ticket #3015.
#
# $Id: where6.test,v 1.2 2008/04/17 19:14:02 drh Exp $
set testdir [file dirname $argv0]
source $testdir/tester.tcl
# Build some test data
#
do_test where6-1.1 {
execsql {
CREATE TABLE t1(a INTEGER PRIMARY KEY,b,c);
INSERT INTO t1 VALUES(1,3,1);
INSERT INTO t1 VALUES(2,4,2);
CREATE TABLE t2(x INTEGER PRIMARY KEY);
INSERT INTO t2 VALUES(3);
SELECT * FROM t1 LEFT JOIN t2 ON b=x AND c=1;
}
} {1 3 1 3 2 4 2 {}}
do_test where6-1.2 {
execsql {
SELECT * FROM t1 LEFT JOIN t2 ON x=b AND c=1;
}
} {1 3 1 3 2 4 2 {}}
do_test where6-1.3 {
execsql {
SELECT * FROM t1 LEFT JOIN t2 ON x=b AND 1=c;
}
} {1 3 1 3 2 4 2 {}}
do_test where6-1.4 {
execsql {
SELECT * FROM t1 LEFT JOIN t2 ON b=x AND 1=c;
}
} {1 3 1 3 2 4 2 {}}
ifcapable explain {
do_test where6-1.5 {
explain_no_trace {SELECT * FROM t1 LEFT JOIN t2 ON x=b AND 1=c}
} [explain_no_trace {SELECT * FROM t1 LEFT JOIN t2 ON b=x AND c=1}]
do_test where6-1.6 {
explain_no_trace {SELECT * FROM t1 LEFT JOIN t2 ON x=b WHERE 1=c}
} [explain_no_trace {SELECT * FROM t1 LEFT JOIN t2 ON b=x WHERE c=1}]
}
do_test where6-1.11 {
execsql {
SELECT * FROM t1 LEFT JOIN t2 ON b=x WHERE c=1;
}
} {1 3 1 3}
do_test where6-1.12 {
execsql {
SELECT * FROM t1 LEFT JOIN t2 ON x=b WHERE c=1;
}
} {1 3 1 3}
do_test where6-1.13 {
execsql {
SELECT * FROM t1 LEFT JOIN t2 ON b=x WHERE 1=c;
}
} {1 3 1 3}
do_test where6-2.1 {
execsql {
CREATE INDEX i1 ON t1(c);
SELECT * FROM t1 LEFT JOIN t2 ON b=x AND c=1;
}
} {1 3 1 3 2 4 2 {}}
do_test where6-2.2 {
execsql {
SELECT * FROM t1 LEFT JOIN t2 ON x=b AND c=1;
}
} {1 3 1 3 2 4 2 {}}
do_test where6-2.3 {
execsql {
SELECT * FROM t1 LEFT JOIN t2 ON x=b AND 1=c;
}
} {1 3 1 3 2 4 2 {}}
do_test where6-2.4 {
execsql {
SELECT * FROM t1 LEFT JOIN t2 ON b=x AND 1=c;
}
} {1 3 1 3 2 4 2 {}}
ifcapable explain {
do_test where6-2.5 {
explain_no_trace {SELECT * FROM t1 LEFT JOIN t2 ON x=b AND 1=c}
} [explain_no_trace {SELECT * FROM t1 LEFT JOIN t2 ON b=x AND c=1}]
do_test where6-2.6 {
explain_no_trace {SELECT * FROM t1 LEFT JOIN t2 ON x=b WHERE 1=c}
} [explain_no_trace {SELECT * FROM t1 LEFT JOIN t2 ON b=x WHERE c=1}]
}
do_test where6-2.11 {
execsql {
SELECT * FROM t1 LEFT JOIN t2 ON b=x WHERE c=1;
}
} {1 3 1 3}
do_test where6-2.12 {
execsql {
SELECT * FROM t1 LEFT JOIN t2 ON x=b WHERE c=1;
}
} {1 3 1 3}
do_test where6-2.13 {
execsql {
SELECT * FROM t1 LEFT JOIN t2 ON x=b WHERE 1=c;
}
} {1 3 1 3}
do_test where6-2.14 {
execsql {
SELECT * FROM t1 LEFT JOIN t2 ON b=x WHERE 1=c;
}
} {1 3 1 3}
# Ticket [ebdbadade5b]:
# If the ON close on a LEFT JOIN is of the form x=y where both x and y
# are indexed columns on tables to left of the join, then do not use that
# term with indices to either table.
#
do_test where6-3.1 {
db eval {
CREATE TABLE t4(x UNIQUE);
INSERT INTO t4 VALUES('abc');
INSERT INTO t4 VALUES('def');
INSERT INTO t4 VALUES('ghi');
CREATE TABLE t5(a, b, c, PRIMARY KEY(a,b));
INSERT INTO t5 VALUES('abc','def',123);
INSERT INTO t5 VALUES('def','ghi',456);
SELECT t4a.x, t4b.x, t5.c, t6.v
FROM t4 AS t4a
INNER JOIN t4 AS t4b
LEFT JOIN t5 ON t5.a=t4a.x AND t5.b=t4b.x
LEFT JOIN (SELECT 1 AS v) AS t6 ON t4a.x=t4b.x
ORDER BY 1, 2, 3;
}
} {abc abc {} 1 abc def 123 {} abc ghi {} {} def abc {} {} def def {} 1 def ghi 456 {} ghi abc {} {} ghi def {} {} ghi ghi {} 1}
finish_test