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Annotation of embedaddon/sqlite3/test/descidx3.test, revision 1.1.1.1

1.1       misho       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: # Do not use a codec for tests in this file, as the database file is
                     21: # manipulated directly using tcl scripts (using the [hexio_write] command).
                     22: #
                     23: do_not_use_codec
                     24: 
                     25: ifcapable !bloblit {
                     26:   finish_test
                     27:   return
                     28: }
                     29: db eval {PRAGMA legacy_file_format=OFF}
                     30: 
                     31: # This procedure sets the value of the file-format in file 'test.db'
                     32: # to $newval. Also, the schema cookie is incremented.
                     33: # 
                     34: proc set_file_format {newval} {
                     35:   hexio_write test.db 44 [hexio_render_int32 $newval]
                     36:   set schemacookie [hexio_get_int [hexio_read test.db 40 4]]
                     37:   incr schemacookie
                     38:   hexio_write test.db 40 [hexio_render_int32 $schemacookie]
                     39:   return {}
                     40: }
                     41: 
                     42: # This procedure returns the value of the file-format in file 'test.db'.
                     43: # 
                     44: proc get_file_format {{fname test.db}} {
                     45:   return [hexio_get_int [hexio_read $fname 44 4]]
                     46: }
                     47: 
                     48: # Verify that the file format starts as 4.
                     49: #
                     50: do_test descidx3-1.1 {
                     51:   execsql {
                     52:     CREATE TABLE t1(i INTEGER PRIMARY KEY,a,b,c,d);
                     53:     CREATE INDEX t1i1 ON t1(a DESC, b ASC, c DESC);
                     54:     CREATE INDEX t1i2 ON t1(b DESC, c ASC, d DESC);
                     55:   }
                     56:   get_file_format
                     57: } {4}
                     58: 
                     59: # Put some information in the table and verify that the descending
                     60: # index actually works.
                     61: #
                     62: do_test descidx3-2.1 {
                     63:   execsql {
                     64:     INSERT INTO t1 VALUES(1, NULL, NULL, NULL, NULL);
                     65:     INSERT INTO t1 VALUES(2, 2, 2, 2, 2);
                     66:     INSERT INTO t1 VALUES(3, 3, 3, 3, 3);
                     67:     INSERT INTO t1 VALUES(4, 2.5, 2.5, 2.5, 2.5);
                     68:     INSERT INTO t1 VALUES(5, -5, -5, -5, -5);
                     69:     INSERT INTO t1 VALUES(6, 'six', 'six', 'six', 'six');
                     70:     INSERT INTO t1 VALUES(7, x'77', x'77', x'77', x'77');
                     71:     INSERT INTO t1 VALUES(8, 'eight', 'eight', 'eight', 'eight');
                     72:     INSERT INTO t1 VALUES(9, x'7979', x'7979', x'7979', x'7979');
                     73:     SELECT count(*) FROM t1;
                     74:   }
                     75: } 9
                     76: do_test descidx3-2.2 {
                     77:   execsql {
                     78:     SELECT i FROM t1 ORDER BY a;
                     79:   }
                     80: } {1 5 2 4 3 8 6 7 9}
                     81: do_test descidx3-2.3 {
                     82:   execsql {
                     83:     SELECT i FROM t1 ORDER BY a DESC;
                     84:   }
                     85: } {9 7 6 8 3 4 2 5 1}
                     86: 
                     87: # The "natural" order for the index is decreasing
                     88: do_test descidx3-2.4 {
                     89:   execsql {
                     90:     SELECT i FROM t1 WHERE a<=x'7979';
                     91:   }
                     92: } {9 7 6 8 3 4 2 5}
                     93: do_test descidx3-2.5 {
                     94:   execsql {
                     95:     SELECT i FROM t1 WHERE a>-99;
                     96:   }
                     97: } {9 7 6 8 3 4 2 5}
                     98: 
                     99: # Even when all values of t1.a are the same, sorting by A returns
                    100: # the rows in reverse order because this the natural order of the
                    101: # index.
                    102: #
                    103: do_test descidx3-3.1 {
                    104:   execsql {
                    105:     UPDATE t1 SET a=1;
                    106:     SELECT i FROM t1 ORDER BY a;
                    107:   }
                    108: } {9 7 6 8 3 4 2 5 1}
                    109: do_test descidx3-3.2 {
                    110:   execsql {
                    111:     SELECT i FROM t1 WHERE a=1 AND b>0 AND b<'zzz'
                    112:   }
                    113: } {2 4 3 8 6}
                    114: do_test descidx3-3.3 {
                    115:   execsql {
                    116:     SELECT i FROM t1 WHERE b>0 AND b<'zzz'
                    117:   }
                    118: } {6 8 3 4 2}
                    119: do_test descidx3-3.4 {
                    120:   execsql {
                    121:     SELECT i FROM t1 WHERE a=1 AND b>-9999 AND b<x'ffffffff'
                    122:   }
                    123: } {5 2 4 3 8 6 7 9}
                    124: do_test descidx3-3.5 {
                    125:   execsql {
                    126:     SELECT i FROM t1 WHERE b>-9999 AND b<x'ffffffff'
                    127:   }
                    128: } {9 7 6 8 3 4 2 5}
                    129: 
                    130: ifcapable subquery {
                    131:   # If the subquery capability is not compiled in to the binary, then
                    132:   # the IN(...) operator is not available. Hence these tests cannot be 
                    133:   # run.
                    134:   do_test descidx3-4.1 {
                    135:     execsql {
                    136:       UPDATE t1 SET a=2 WHERE i<6;
                    137:       SELECT i FROM t1 WHERE a IN (1,2) AND b>0 AND b<'zzz';
                    138:     }
                    139:   } {8 6 2 4 3}
                    140:   do_test descidx3-4.2 {
                    141:     execsql {
                    142:       UPDATE t1 SET a=1;
                    143:       SELECT i FROM t1 WHERE a IN (1,2) AND b>0 AND b<'zzz';
                    144:     }
                    145:   } {2 4 3 8 6}
                    146:   do_test descidx3-4.3 {
                    147:     execsql {
                    148:       UPDATE t1 SET b=2;
                    149:       SELECT i FROM t1 WHERE a IN (1,2) AND b>0 AND b<'zzz';
                    150:     }
                    151:   } {9 7 6 8 3 4 2 5 1}
                    152: }
                    153: 
                    154: finish_test