91 lines
2.3 KiB
Plaintext
91 lines
2.3 KiB
Plaintext
# 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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