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Experimental implementation of FILTER clause for aggregate functions.
FossilOrigin-Name: 1f1ae2d6ac8dcbb62e5aa3dc17bc67d559cb565fc0d0a8c00a596075d35f8130
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dan
90
test/filter1.test
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90
test/filter1.test
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# 2018 May 8
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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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set testdir [file dirname $argv0]
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source $testdir/tester.tcl
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set testprefix filter1
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ifcapable !windowfunc {
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finish_test
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return
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}
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do_execsql_test 1.0 {
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CREATE TABLE t1(a);
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CREATE INDEX i1 ON t1(a);
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INSERT INTO t1 VALUES(1), (2), (3), (4), (5), (6), (7), (8), (9);
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}
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do_execsql_test 1.1 { SELECT sum(a) FROM t1; } 45
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do_execsql_test 1.2 { SELECT sum(a) FILTER( WHERE a<5 ) FROM t1; } 10
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do_execsql_test 1.3 {
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SELECT sum(a) FILTER( WHERE a>9 ),
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sum(a) FILTER( WHERE a>8 ),
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sum(a) FILTER( WHERE a>7 ),
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sum(a) FILTER( WHERE a>6 ),
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sum(a) FILTER( WHERE a>5 ),
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sum(a) FILTER( WHERE a>4 ),
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sum(a) FILTER( WHERE a>3 ),
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sum(a) FILTER( WHERE a>2 ),
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sum(a) FILTER( WHERE a>1 ),
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sum(a) FILTER( WHERE a>0 )
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FROM t1;
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} {{} 9 17 24 30 35 39 42 44 45}
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do_execsql_test 1.4 {
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SELECT max(a) FILTER (WHERE (a % 2)==0) FROM t1
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} {8}
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do_execsql_test 1.5 {
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SELECT min(a) FILTER (WHERE a>4) FROM t1
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} {5}
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do_execsql_test 1.6 {
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SELECT count(*) FILTER (WHERE a!=5) FROM t1
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} {8}
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do_execsql_test 1.6 {
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SELECT min(a) FILTER (WHERE a>3) FROM t1 GROUP BY (a%2) ORDER BY 1;
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} {4 5}
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#-------------------------------------------------------------------------
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# Test some errors:
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#
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# .1 FILTER on a non-aggregate function,
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# .2 Window function in FILTER clause,
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# .3 Aggregate function in FILTER clause,
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#
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reset_db
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do_execsql_test 2.0 {
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CREATE TABLE t1(a);
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INSERT INTO t1 VALUES(1), (2), (3), (4), (5), (6), (7), (8), (9);
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}
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do_catchsql_test 2.1 {
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SELECT upper(a) FILTER (WHERE a=1) FROM t1
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} {1 {filter clause may not be used with non-aggregate upper()}}
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do_catchsql_test 2.2 {
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SELECT sum(a) FILTER (WHERE 1 - max(a) OVER () > 0) FROM t1
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} {1 {misuse of window function max()}}
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do_catchsql_test 2.3 {
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SELECT sum(a) FILTER (WHERE 1 - count(a)) FROM t1
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} {1 {misuse of aggregate: count()}}
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finish_test
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73
test/filter2.tcl
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73
test/filter2.tcl
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# 2018 May 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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#
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source [file join [file dirname $argv0] pg_common.tcl]
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#=========================================================================
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start_test filter2 "2019 July 2"
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ifcapable !windowfunc
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execsql_test 1.0 {
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DROP TABLE IF EXISTS t1;
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CREATE TABLE t1(a INTEGER PRIMARY KEY, b INTEGER);
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INSERT INTO t1 VALUES
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(1, 7), (2, 3), (3, 5), (4, 30), (5, 26), (6, 23), (7, 27),
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(8, 3), (9, 17), (10, 26), (11, 33), (12, 25), (13, NULL), (14, 47),
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(15, 36), (16, 13), (17, 45), (18, 31), (19, 11), (20, 36), (21, 37),
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(22, 21), (23, 22), (24, 14), (25, 16), (26, 3), (27, 7), (28, 29),
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(29, 50), (30, 38), (31, 3), (32, 36), (33, 12), (34, 4), (35, 46),
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(36, 3), (37, 48), (38, 23), (39, NULL), (40, 24), (41, 5), (42, 46),
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(43, 11), (44, NULL), (45, 18), (46, 25), (47, 15), (48, 18), (49, 23);
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}
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execsql_test 1.1 { SELECT sum(b) FROM t1 }
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execsql_test 1.2 { SELECT sum(b) FILTER (WHERE a<10) FROM t1 }
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execsql_test 1.3 { SELECT count(DISTINCT b) FROM t1 }
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execsql_test 1.4 { SELECT count(DISTINCT b) FILTER (WHERE a!=19) FROM t1 }
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execsql_test 1.5 {
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SELECT min(b) FILTER (WHERE a>19),
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min(b) FILTER (WHERE a>0),
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max(a+b) FILTER (WHERE a>19),
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max(b+a) FILTER (WHERE a BETWEEN 10 AND 40)
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FROM t1;
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}
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execsql_test 1.6 {
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SELECT min(b),
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min(b),
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max(a+b),
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max(b+a)
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FROM t1
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GROUP BY (a%10)
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ORDER BY 1, 2, 3, 4;
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}
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execsql_test 1.7 {
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SELECT min(b) FILTER (WHERE a>19),
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min(b) FILTER (WHERE a>0),
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max(a+b) FILTER (WHERE a>19),
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max(b+a) FILTER (WHERE a BETWEEN 10 AND 40)
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FROM t1
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GROUP BY (a%10)
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ORDER BY 1, 2, 3, 4;
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}
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finish_test
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82
test/filter2.test
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82
test/filter2.test
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@@ -0,0 +1,82 @@
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# 2019 July 2
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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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####################################################
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# DO NOT EDIT! THIS FILE IS AUTOMATICALLY GENERATED!
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####################################################
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set testdir [file dirname $argv0]
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source $testdir/tester.tcl
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set testprefix filter2
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ifcapable !windowfunc { finish_test ; return }
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do_execsql_test 1.0 {
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DROP TABLE IF EXISTS t1;
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CREATE TABLE t1(a INTEGER PRIMARY KEY, b INTEGER);
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INSERT INTO t1 VALUES
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(1, 7), (2, 3), (3, 5), (4, 30), (5, 26), (6, 23), (7, 27),
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(8, 3), (9, 17), (10, 26), (11, 33), (12, 25), (13, NULL), (14, 47),
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(15, 36), (16, 13), (17, 45), (18, 31), (19, 11), (20, 36), (21, 37),
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(22, 21), (23, 22), (24, 14), (25, 16), (26, 3), (27, 7), (28, 29),
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(29, 50), (30, 38), (31, 3), (32, 36), (33, 12), (34, 4), (35, 46),
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(36, 3), (37, 48), (38, 23), (39, NULL), (40, 24), (41, 5), (42, 46),
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(43, 11), (44, NULL), (45, 18), (46, 25), (47, 15), (48, 18), (49, 23);
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} {}
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do_execsql_test 1.1 {
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SELECT sum(b) FROM t1
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} {1041}
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do_execsql_test 1.2 {
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SELECT sum(b) FILTER (WHERE a<10) FROM t1
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} {141}
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do_execsql_test 1.3 {
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SELECT count(DISTINCT b) FROM t1
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} {31}
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do_execsql_test 1.4 {
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SELECT count(DISTINCT b) FILTER (WHERE a!=19) FROM t1
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} {31}
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do_execsql_test 1.5 {
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SELECT min(b) FILTER (WHERE a>19),
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min(b) FILTER (WHERE a>0),
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max(a+b) FILTER (WHERE a>19),
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max(b+a) FILTER (WHERE a BETWEEN 10 AND 40)
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FROM t1;
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} {3 3 88 85}
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do_execsql_test 1.6 {
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SELECT min(b),
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min(b),
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max(a+b),
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max(b+a)
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FROM t1
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GROUP BY (a%10)
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ORDER BY 1, 2, 3, 4;
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} {3 3 58 58 3 3 66 66 3 3 71 71 3 3 88 88 4 4 61 61 5 5 54 54
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7 7 85 85 11 11 79 79 16 16 81 81 24 24 68 68}
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do_execsql_test 1.7 {
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SELECT min(b) FILTER (WHERE a>19),
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min(b) FILTER (WHERE a>0),
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max(a+b) FILTER (WHERE a>19),
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max(b+a) FILTER (WHERE a BETWEEN 10 AND 40)
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FROM t1
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GROUP BY (a%10)
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ORDER BY 1, 2, 3, 4;
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} {3 3 58 58 3 3 71 39 4 4 38 61 7 7 85 85 11 5 54 45 16 16 81 81
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18 3 66 61 21 3 88 68 23 11 79 79 24 24 68 68}
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finish_test
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