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