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| 1 # 2006 January 02 | |
| 2 # | |
| 3 # The author disclaims copyright to this source code. In place of | |
| 4 # a legal notice, here is a blessing: | |
| 5 # | |
| 6 # May you do good and not evil. | |
| 7 # May you find forgiveness for yourself and forgive others. | |
| 8 # May you share freely, never taking more than you give. | |
| 9 # | |
| 10 #************************************************************************* | |
| 11 # This file implements regression tests for SQLite library. The | |
| 12 # focus of this script is descending indices. | |
| 13 # | |
| 14 # $Id: descidx3.test,v 1.6 2008/03/19 00:21:31 drh Exp $ | |
| 15 # | |
| 16 | |
| 17 set testdir [file dirname $argv0] | |
| 18 source $testdir/tester.tcl | |
| 19 | |
| 20 ifcapable !bloblit { | |
| 21 finish_test | |
| 22 return | |
| 23 } | |
| 24 db eval {PRAGMA legacy_file_format=OFF} | |
| 25 | |
| 26 # This procedure sets the value of the file-format in file 'test.db' | |
| 27 # to $newval. Also, the schema cookie is incremented. | |
| 28 # | |
| 29 proc set_file_format {newval} { | |
| 30 hexio_write test.db 44 [hexio_render_int32 $newval] | |
| 31 set schemacookie [hexio_get_int [hexio_read test.db 40 4]] | |
| 32 incr schemacookie | |
| 33 hexio_write test.db 40 [hexio_render_int32 $schemacookie] | |
| 34 return {} | |
| 35 } | |
| 36 | |
| 37 # This procedure returns the value of the file-format in file 'test.db'. | |
| 38 # | |
| 39 proc get_file_format {{fname test.db}} { | |
| 40 return [hexio_get_int [hexio_read $fname 44 4]] | |
| 41 } | |
| 42 | |
| 43 # Verify that the file format starts as 4. | |
| 44 # | |
| 45 do_test descidx3-1.1 { | |
| 46 execsql { | |
| 47 CREATE TABLE t1(i INTEGER PRIMARY KEY,a,b,c,d); | |
| 48 CREATE INDEX t1i1 ON t1(a DESC, b ASC, c DESC); | |
| 49 CREATE INDEX t1i2 ON t1(b DESC, c ASC, d DESC); | |
| 50 } | |
| 51 get_file_format | |
| 52 } {4} | |
| 53 | |
| 54 # Put some information in the table and verify that the descending | |
| 55 # index actually works. | |
| 56 # | |
| 57 do_test descidx3-2.1 { | |
| 58 execsql { | |
| 59 INSERT INTO t1 VALUES(1, NULL, NULL, NULL, NULL); | |
| 60 INSERT INTO t1 VALUES(2, 2, 2, 2, 2); | |
| 61 INSERT INTO t1 VALUES(3, 3, 3, 3, 3); | |
| 62 INSERT INTO t1 VALUES(4, 2.5, 2.5, 2.5, 2.5); | |
| 63 INSERT INTO t1 VALUES(5, -5, -5, -5, -5); | |
| 64 INSERT INTO t1 VALUES(6, 'six', 'six', 'six', 'six'); | |
| 65 INSERT INTO t1 VALUES(7, x'77', x'77', x'77', x'77'); | |
| 66 INSERT INTO t1 VALUES(8, 'eight', 'eight', 'eight', 'eight'); | |
| 67 INSERT INTO t1 VALUES(9, x'7979', x'7979', x'7979', x'7979'); | |
| 68 SELECT count(*) FROM t1; | |
| 69 } | |
| 70 } 9 | |
| 71 do_test descidx3-2.2 { | |
| 72 execsql { | |
| 73 SELECT i FROM t1 ORDER BY a; | |
| 74 } | |
| 75 } {1 5 2 4 3 8 6 7 9} | |
| 76 do_test descidx3-2.3 { | |
| 77 execsql { | |
| 78 SELECT i FROM t1 ORDER BY a DESC; | |
| 79 } | |
| 80 } {9 7 6 8 3 4 2 5 1} | |
| 81 | |
| 82 # The "natural" order for the index is decreasing | |
| 83 do_test descidx3-2.4 { | |
| 84 execsql { | |
| 85 SELECT i FROM t1 WHERE a<=x'7979'; | |
| 86 } | |
| 87 } {9 7 6 8 3 4 2 5} | |
| 88 do_test descidx3-2.5 { | |
| 89 execsql { | |
| 90 SELECT i FROM t1 WHERE a>-99; | |
| 91 } | |
| 92 } {9 7 6 8 3 4 2 5} | |
| 93 | |
| 94 # Even when all values of t1.a are the same, sorting by A returns | |
| 95 # the rows in reverse order because this the natural order of the | |
| 96 # index. | |
| 97 # | |
| 98 do_test descidx3-3.1 { | |
| 99 execsql { | |
| 100 UPDATE t1 SET a=1; | |
| 101 SELECT i FROM t1 ORDER BY a; | |
| 102 } | |
| 103 } {9 7 6 8 3 4 2 5 1} | |
| 104 do_test descidx3-3.2 { | |
| 105 execsql { | |
| 106 SELECT i FROM t1 WHERE a=1 AND b>0 AND b<'zzz' | |
| 107 } | |
| 108 } {2 4 3 8 6} | |
| 109 do_test descidx3-3.3 { | |
| 110 execsql { | |
| 111 SELECT i FROM t1 WHERE b>0 AND b<'zzz' | |
| 112 } | |
| 113 } {6 8 3 4 2} | |
| 114 do_test descidx3-3.4 { | |
| 115 execsql { | |
| 116 SELECT i FROM t1 WHERE a=1 AND b>-9999 AND b<x'ffffffff' | |
| 117 } | |
| 118 } {5 2 4 3 8 6 7 9} | |
| 119 do_test descidx3-3.5 { | |
| 120 execsql { | |
| 121 SELECT i FROM t1 WHERE b>-9999 AND b<x'ffffffff' | |
| 122 } | |
| 123 } {9 7 6 8 3 4 2 5} | |
| 124 | |
| 125 ifcapable subquery { | |
| 126 # If the subquery capability is not compiled in to the binary, then | |
| 127 # the IN(...) operator is not available. Hence these tests cannot be | |
| 128 # run. | |
| 129 do_test descidx3-4.1 { | |
| 130 execsql { | |
| 131 UPDATE t1 SET a=2 WHERE i<6; | |
| 132 SELECT i FROM t1 WHERE a IN (1,2) AND b>0 AND b<'zzz'; | |
| 133 } | |
| 134 } {8 6 2 4 3} | |
| 135 do_test descidx3-4.2 { | |
| 136 execsql { | |
| 137 UPDATE t1 SET a=1; | |
| 138 SELECT i FROM t1 WHERE a IN (1,2) AND b>0 AND b<'zzz'; | |
| 139 } | |
| 140 } {2 4 3 8 6} | |
| 141 do_test descidx3-4.3 { | |
| 142 execsql { | |
| 143 UPDATE t1 SET b=2; | |
| 144 SELECT i FROM t1 WHERE a IN (1,2) AND b>0 AND b<'zzz'; | |
| 145 } | |
| 146 } {9 7 6 8 3 4 2 5 1} | |
| 147 } | |
| 148 | |
| 149 finish_test | |
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