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# 2012 February 02
#
# 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.
#
#***********************************************************************
#
# Test for queries of the form:
#
# SELECT p, max(q) FROM t1;
#
# Demonstration that the value returned for p is on the same row as
# the maximum q.
#
set testdir [file dirname $argv0]
source $testdir/tester.tcl
set testprefix minmax4
ifcapable !compound {
finish_test
return
}
do_test minmax4-1.1 {
db eval {
CREATE TABLE t1(p,q);
SELECT p, max(q) FROM t1;
}
} {{} {}}
do_test minmax4-1.2 {
db eval {
SELECT p, min(q) FROM t1;
}
} {{} {}}
do_test minmax4-1.3 {
db eval {
INSERT INTO t1 VALUES(1,2);
SELECT p, max(q) FROM t1;
}
} {1 2}
do_test minmax4-1.4 {
db eval {
SELECT p, min(q) FROM t1;
}
} {1 2}
do_test minmax4-1.5 {
db eval {
INSERT INTO t1 VALUES(3,4);
SELECT p, max(q) FROM t1;
}
} {3 4}
do_test minmax4-1.6 {
db eval {
SELECT p, min(q) FROM t1;
SELECT p FROM (SELECT p, min(q) FROM t1);
}
} {1 2 1}
do_test minmax4-1.7 {
db eval {
INSERT INTO t1 VALUES(5,0);
SELECT p, max(q) FROM t1;
SELECT p FROM (SELECT max(q), p FROM t1);
}
} {3 4 3}
do_test minmax4-1.8 {
db eval {
SELECT p, min(q) FROM t1;
}
} {5 0}
do_test minmax4-1.9 {
db eval {
INSERT INTO t1 VALUES(6,1);
SELECT p, max(q) FROM t1;
SELECT p FROM (SELECT max(q), p FROM t1);
}
} {3 4 3}
do_test minmax4-1.10 {
db eval {
SELECT p, min(q) FROM t1;
}
} {5 0}
do_test minmax4-1.11 {
db eval {
INSERT INTO t1 VALUES(7,NULL);
SELECT p, max(q) FROM t1;
}
} {3 4}
do_test minmax4-1.12 {
db eval {
SELECT p, min(q) FROM t1;
}
} {5 0}
do_test minmax4-1.13 {
db eval {
DELETE FROM t1 WHERE q IS NOT NULL;
SELECT p, max(q) FROM t1;
}
} {7 {}}
do_test minmax4-1.14 {
db eval {
SELECT p, min(q) FROM t1;
}
} {7 {}}
do_test minmax4-2.1 {
db eval {
CREATE TABLE t2(a,b,c);
INSERT INTO t2 VALUES
(1,null,2),
(1,2,3),
(1,1,4),
(2,3,5);
SELECT a, max(b), c FROM t2 GROUP BY a ORDER BY a;
}
} {1 2 3 2 3 5}
do_test minmax4-2.2 {
db eval {
SELECT a, min(b), c FROM t2 GROUP BY a ORDER BY a;
}
} {1 1 4 2 3 5}
do_test minmax4-2.3 {
db eval {
SELECT a, min(b), avg(b), count(b), c FROM t2 GROUP BY a ORDER BY a DESC;
}
} {2 3 3.0 1 5 1 1 1.5 2 4}
do_test minmax4-2.4 {
db eval {
SELECT a, min(b), max(b), c FROM t2 GROUP BY a ORDER BY a;
}
} {1 1 2 3 2 3 3 5}
do_test minmax4-2.5 {
db eval {
SELECT a, max(b), min(b), c FROM t2 GROUP BY a ORDER BY a;
}
} {1 2 1 4 2 3 3 5}
do_test minmax4-2.6 {
db eval {
SELECT a, max(b), b, max(c), c FROM t2 GROUP BY a ORDER BY a;
}
} {1 2 1 4 4 2 3 3 5 5}
do_test minmax4-2.7 {
db eval {
SELECT a, min(b), b, min(c), c FROM t2 GROUP BY a ORDER BY a;
}
} {1 1 {} 2 2 2 3 3 5 5}
#-------------------------------------------------------------------------
foreach {tn sql} {
1 { CREATE INDEX i1 ON t1(a) }
2 { CREATE INDEX i1 ON t1(a DESC) }
3 { }
} {
reset_db
do_execsql_test 3.$tn.0 {
CREATE TABLE t1(a, b);
INSERT INTO t1 VALUES(NULL, 1);
}
execsql $sql
do_execsql_test 3.$tn.1 {
SELECT min(a), b FROM t1;
} {{} 1}
do_execsql_test 3.$tn.2 {
SELECT min(a), b FROM t1 WHERE a<50;
} {{} {}}
do_execsql_test 3.$tn.3 {
INSERT INTO t1 VALUES(2, 2);
}
do_execsql_test 3.$tn.4 {
SELECT min(a), b FROM t1;
} {2 2}
do_execsql_test 3.$tn.5 {
SELECT min(a), b FROM t1 WHERE a<50;
} {2 2}
}
#-------------------------------------------------------------------------
reset_db
do_execsql_test 4.0 {
CREATE TABLE t0 (c0, c1);
CREATE INDEX i0 ON t0(c1, c1 + 1 DESC);
INSERT INTO t0(c0) VALUES (1);
}
do_execsql_test 4.1 {
SELECT MIN(t0.c1), t0.c0 FROM t0 WHERE t0.c1 ISNULL;
} {{} 1}
#-------------------------------------------------------------------------
reset_db
do_execsql_test 5.0 {
CREATE TABLE t1 (a, b);
INSERT INTO t1 VALUES(123, NULL);
CREATE INDEX i1 ON t1(a, b DESC);
}
do_execsql_test 5.1 {
SELECT MIN(a) FROM t1 WHERE a=123;
} {123}
#-------------------------------------------------------------------------
# Tests for ticket f8a7060ece.
#
reset_db
do_execsql_test 6.1.0 {
CREATE TABLE t1(a, b, c);
INSERT INTO t1 VALUES(NULL, 1, 'x');
CREATE INDEX i1 ON t1(a);
}
do_execsql_test 6.1.1 {
SELECT min(a), b, c FROM t1 WHERE c='x';
} {{} 1 x}
do_execsql_test 6.1.2 {
INSERT INTO t1 VALUES(1, 2, 'y');
} {}
do_execsql_test 6.1.3 {
SELECT min(a), b, c FROM t1 WHERE c='x';
} {{} 1 x}
do_execsql_test 6.2.0 {
CREATE TABLE t0(c0 UNIQUE, c1);
INSERT INTO t0(c1) VALUES (0);
INSERT INTO t0(c0) VALUES (0);
CREATE VIEW v0(c0, c1) AS
SELECT t0.c1, t0.c0 FROM t0 WHERE CAST(t0.rowid AS INT) = 1;
}
do_execsql_test 6.2.1 {
SELECT c0, c1 FROM v0;
} {0 {}}
do_execsql_test 6.2.2 {
SELECT v0.c0, MIN(v0.c1) FROM v0;
} {0 {}}
finish_test
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