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Overview
Comment: | Additional test cases for the coalesce() and ifnull() functions. |
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Downloads: | Tarball | ZIP archive |
Timelines: | family | ancestors | descendants | both | trunk |
Files: | files | file ages | folders |
SHA1: |
d0591258b62df4fa610b7ac2a2af0344 |
User & Date: | drh 2009-11-11 01:14:18.000 |
Context
2009-11-11
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04:17 | Modified CLI to raise an error when extra command line options are passed. Added tests to verify correct handling, as well as other basic handling of command line options. Ticket [f5cb008a65]. (check-in: 09b4f19f10 user: shaneh tags: trunk) | |
01:14 | Additional test cases for the coalesce() and ifnull() functions. (check-in: d0591258b6 user: drh tags: trunk) | |
00:24 | Generate VDBE code for the built-in COALESCE() and IFNULL() functions. This allows unused arguments to never be evaluated, which is a performance win when the unused argument is a subquery. (check-in: 30055b257c user: drh tags: trunk) | |
Changes
Added test/coalesce.test.
> > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 | # 2009 November 10 # # 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. # #*********************************************************************** # Additional test cases for the COALESCE() and IFNULL() functions. # set testdir [file dirname $argv0] source $testdir/tester.tcl do_test coalesce-1.0 { db eval { CREATE TABLE t1(a INTEGER PRIMARY KEY, b, c, d); INSERT INTO t1 VALUES(1, null, null, null); INSERT INTO t1 VALUES(2, 2, 99, 99); INSERT INTO t1 VALUES(3, null, 3, 99); INSERT INTO t1 VALUES(4, null, null, 4); INSERT INTO t1 VALUES(5, null, null, null); INSERT INTO t1 VALUES(6, 22, 99, 99); INSERT INTO t1 VALUES(7, null, 33, 99); INSERT INTO t1 VALUES(8, null, null, 44); SELECT coalesce(b,c,d) FROM t1 ORDER BY a; } } {{} 2 3 4 {} 22 33 44} do_test coalesce-1.1 { db eval { SELECT coalesce(d+c+b,d+c,d) FROM t1 ORDER BY a; } } {{} 200 102 4 {} 220 132 44} do_test coalesce-1.2 { db eval { SELECT ifnull(d+c+b,ifnull(d+c,d)) FROM t1 ORDER BY a; } } {{} 200 102 4 {} 220 132 44} do_test coalesce-1.3 { db eval { SELECT ifnull(ifnull(d+c+b,d+c),d) FROM t1 ORDER BY a; } } {{} 200 102 4 {} 220 132 44} do_test coalesce-1.4 { db eval { SELECT ifnull(ifnull(b,c),d) FROM t1 ORDER BY a; } } {{} 2 3 4 {} 22 33 44} do_test coalesce-1.5 { db eval { SELECT ifnull(b,ifnull(c,d)) FROM t1 ORDER BY a; } } {{} 2 3 4 {} 22 33 44} do_test coalesce-1.6 { db eval { SELECT coalesce(b,NOT b,-b,abs(b),lower(b),length(b),min(b,5),b*123,c) FROM t1 ORDER BY a; } } {{} 2 3 {} {} 22 33 {}} do_test coalesce-1.7 { db eval { SELECT ifnull(nullif(a,4),99) FROM t1 ORDER BY a; } } {1 2 3 99 5 6 7 8} do_test coalesce-1.8 { db eval { pragma vdbe_listing=on; SELECT coalesce( CASE WHEN b=2 THEN 123 END, CASE WHEN b=3 THEN 234 END, CASE WHEN c=3 THEN 345 WHEN c=33 THEN 456 END, d ) FROM t1 ORDER BY a; } } {{} 123 345 4 {} 99 456 44} finish_test |