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Experimental implementation of FILTER clause for aggregate functions.

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dan
2019-07-02 11:56:47 +00:00
parent 00a6153faf
commit 6ba7ab0d25
12 changed files with 342 additions and 45 deletions
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# 2019 July 2
#
# 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.
#
####################################################
# DO NOT EDIT! THIS FILE IS AUTOMATICALLY GENERATED!
####################################################
set testdir [file dirname $argv0]
source $testdir/tester.tcl
set testprefix filter2
ifcapable !windowfunc { finish_test ; return }
do_execsql_test 1.0 {
DROP TABLE IF EXISTS t1;
CREATE TABLE t1(a INTEGER PRIMARY KEY, b INTEGER);
INSERT INTO t1 VALUES
(1, 7), (2, 3), (3, 5), (4, 30), (5, 26), (6, 23), (7, 27),
(8, 3), (9, 17), (10, 26), (11, 33), (12, 25), (13, NULL), (14, 47),
(15, 36), (16, 13), (17, 45), (18, 31), (19, 11), (20, 36), (21, 37),
(22, 21), (23, 22), (24, 14), (25, 16), (26, 3), (27, 7), (28, 29),
(29, 50), (30, 38), (31, 3), (32, 36), (33, 12), (34, 4), (35, 46),
(36, 3), (37, 48), (38, 23), (39, NULL), (40, 24), (41, 5), (42, 46),
(43, 11), (44, NULL), (45, 18), (46, 25), (47, 15), (48, 18), (49, 23);
} {}
do_execsql_test 1.1 {
SELECT sum(b) FROM t1
} {1041}
do_execsql_test 1.2 {
SELECT sum(b) FILTER (WHERE a<10) FROM t1
} {141}
do_execsql_test 1.3 {
SELECT count(DISTINCT b) FROM t1
} {31}
do_execsql_test 1.4 {
SELECT count(DISTINCT b) FILTER (WHERE a!=19) FROM t1
} {31}
do_execsql_test 1.5 {
SELECT min(b) FILTER (WHERE a>19),
min(b) FILTER (WHERE a>0),
max(a+b) FILTER (WHERE a>19),
max(b+a) FILTER (WHERE a BETWEEN 10 AND 40)
FROM t1;
} {3 3 88 85}
do_execsql_test 1.6 {
SELECT min(b),
min(b),
max(a+b),
max(b+a)
FROM t1
GROUP BY (a%10)
ORDER BY 1, 2, 3, 4;
} {3 3 58 58 3 3 66 66 3 3 71 71 3 3 88 88 4 4 61 61 5 5 54 54
7 7 85 85 11 11 79 79 16 16 81 81 24 24 68 68}
do_execsql_test 1.7 {
SELECT min(b) FILTER (WHERE a>19),
min(b) FILTER (WHERE a>0),
max(a+b) FILTER (WHERE a>19),
max(b+a) FILTER (WHERE a BETWEEN 10 AND 40)
FROM t1
GROUP BY (a%10)
ORDER BY 1, 2, 3, 4;
} {3 3 58 58 3 3 71 39 4 4 38 61 7 7 85 85 11 5 54 45 16 16 81 81
18 3 66 61 21 3 88 68 23 11 79 79 24 24 68 68}
finish_test