wasCSharpSQLite – Blame information for rev 7
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1 | office | 1 | # 2001 September 15 |
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 file is testing aggregate functions and the |
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13 | # GROUP BY and HAVING clauses of SELECT statements. |
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14 | # |
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15 | # $Id: select3.test,v 1.23 2008/01/16 18:20:42 danielk1977 Exp $ |
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16 | |||
17 | set testdir [file dirname $argv0] |
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18 | source $testdir/tester.tcl |
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19 | |||
20 | # Build some test data |
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21 | # |
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22 | do_test select3-1.0 { |
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23 | execsql { |
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24 | CREATE TABLE t1(n int, log int); |
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25 | BEGIN; |
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26 | } |
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27 | for {set i 1} {$i<32} {incr i} { |
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28 | for {set j 0} {(1<<$j)<$i} {incr j} {} |
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29 | execsql "INSERT INTO t1 VALUES($i,$j)" |
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30 | } |
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31 | execsql { |
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32 | COMMIT |
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33 | } |
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34 | execsql {SELECT DISTINCT log FROM t1 ORDER BY log} |
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35 | } {0 1 2 3 4 5} |
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36 | |||
37 | # Basic aggregate functions. |
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38 | # |
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39 | do_test select3-1.1 { |
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40 | execsql {SELECT count(*) FROM t1} |
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41 | } {31} |
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42 | do_test select3-1.2 { |
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43 | execsql { |
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44 | SELECT min(n),min(log),max(n),max(log),sum(n),sum(log),avg(n),avg(log) |
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45 | FROM t1 |
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46 | } |
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47 | } {1 0 31 5 496 124 16.0 4.0} |
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48 | do_test select3-1.3 { |
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49 | execsql {SELECT max(n)/avg(n), max(log)/avg(log) FROM t1} |
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50 | } {1.9375 1.25} |
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51 | |||
52 | # Try some basic GROUP BY clauses |
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53 | # |
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54 | do_test select3-2.1 { |
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55 | execsql {SELECT log, count(*) FROM t1 GROUP BY log ORDER BY log} |
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56 | } {0 1 1 1 2 2 3 4 4 8 5 15} |
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57 | do_test select3-2.2 { |
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58 | execsql {SELECT log, min(n) FROM t1 GROUP BY log ORDER BY log} |
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59 | } {0 1 1 2 2 3 3 5 4 9 5 17} |
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60 | do_test select3-2.3.1 { |
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61 | execsql {SELECT log, avg(n) FROM t1 GROUP BY log ORDER BY log} |
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62 | } {0 1.0 1 2.0 2 3.5 3 6.5 4 12.5 5 24.0} |
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63 | do_test select3-2.3.2 { |
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64 | execsql {SELECT log, avg(n)+1 FROM t1 GROUP BY log ORDER BY log} |
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65 | } {0 2.0 1 3.0 2 4.5 3 7.5 4 13.5 5 25.0} |
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66 | do_test select3-2.4 { |
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67 | execsql {SELECT log, avg(n)-min(n) FROM t1 GROUP BY log ORDER BY log} |
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68 | } {0 0.0 1 0.0 2 0.5 3 1.5 4 3.5 5 7.0} |
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69 | do_test select3-2.5 { |
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70 | execsql {SELECT log*2+1, avg(n)-min(n) FROM t1 GROUP BY log ORDER BY log} |
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71 | } {1 0.0 3 0.0 5 0.5 7 1.5 9 3.5 11 7.0} |
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72 | do_test select3-2.6 { |
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73 | execsql { |
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74 | SELECT log*2+1 as x, count(*) FROM t1 GROUP BY x ORDER BY x |
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75 | } |
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76 | } {1 1 3 1 5 2 7 4 9 8 11 15} |
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77 | do_test select3-2.7 { |
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78 | execsql { |
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79 | SELECT log*2+1 AS x, count(*) AS y FROM t1 GROUP BY x ORDER BY y, x |
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80 | } |
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81 | } {1 1 3 1 5 2 7 4 9 8 11 15} |
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82 | do_test select3-2.8 { |
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83 | execsql { |
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84 | SELECT log*2+1 AS x, count(*) AS y FROM t1 GROUP BY x ORDER BY 10-(x+y) |
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85 | } |
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86 | } {11 15 9 8 7 4 5 2 3 1 1 1} |
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87 | #do_test select3-2.9 { |
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88 | # catchsql { |
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89 | # SELECT log, count(*) FROM t1 GROUP BY 'x' ORDER BY log; |
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90 | # } |
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91 | #} {1 {GROUP BY terms must not be non-integer constants}} |
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92 | do_test select3-2.10 { |
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93 | catchsql { |
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94 | SELECT log, count(*) FROM t1 GROUP BY 0 ORDER BY log; |
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95 | } |
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96 | } {1 {1st GROUP BY term out of range - should be between 1 and 2}} |
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97 | do_test select3-2.11 { |
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98 | catchsql { |
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99 | SELECT log, count(*) FROM t1 GROUP BY 3 ORDER BY log; |
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100 | } |
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101 | } {1 {1st GROUP BY term out of range - should be between 1 and 2}} |
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102 | do_test select3-2.12 { |
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103 | catchsql { |
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104 | SELECT log, count(*) FROM t1 GROUP BY 1 ORDER BY log; |
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105 | } |
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106 | } {0 {0 1 1 1 2 2 3 4 4 8 5 15}} |
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107 | |||
108 | # Cannot have an empty GROUP BY |
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109 | do_test select3-2.13 { |
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110 | catchsql { |
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111 | SELECT log, count(*) FROM t1 GROUP BY ORDER BY log; |
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112 | } |
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113 | } {1 {near "ORDER": syntax error}} |
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114 | do_test select3-2.14 { |
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115 | catchsql { |
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116 | SELECT log, count(*) FROM t1 GROUP BY; |
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117 | } |
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118 | } {1 {near ";": syntax error}} |
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119 | |||
120 | # Cannot have a HAVING without a GROUP BY |
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121 | # |
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122 | do_test select3-3.1 { |
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123 | set v [catch {execsql {SELECT log, count(*) FROM t1 HAVING log>=4}} msg] |
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124 | lappend v $msg |
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125 | } {1 {a GROUP BY clause is required before HAVING}} |
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126 | |||
127 | # Toss in some HAVING clauses |
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128 | # |
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129 | do_test select3-4.1 { |
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130 | execsql {SELECT log, count(*) FROM t1 GROUP BY log HAVING log>=4 ORDER BY log} |
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131 | } {4 8 5 15} |
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132 | do_test select3-4.2 { |
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133 | execsql { |
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134 | SELECT log, count(*) FROM t1 |
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135 | GROUP BY log |
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136 | HAVING count(*)>=4 |
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137 | ORDER BY log |
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138 | } |
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139 | } {3 4 4 8 5 15} |
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140 | do_test select3-4.3 { |
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141 | execsql { |
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142 | SELECT log, count(*) FROM t1 |
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143 | GROUP BY log |
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144 | HAVING count(*)>=4 |
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145 | ORDER BY max(n)+0 |
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146 | } |
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147 | } {3 4 4 8 5 15} |
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148 | do_test select3-4.4 { |
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149 | execsql { |
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150 | SELECT log AS x, count(*) AS y FROM t1 |
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151 | GROUP BY x |
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152 | HAVING y>=4 |
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153 | ORDER BY max(n)+0 |
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154 | } |
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155 | } {3 4 4 8 5 15} |
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156 | do_test select3-4.5 { |
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157 | execsql { |
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158 | SELECT log AS x FROM t1 |
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159 | GROUP BY x |
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160 | HAVING count(*)>=4 |
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161 | ORDER BY max(n)+0 |
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162 | } |
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163 | } {3 4 5} |
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164 | |||
165 | do_test select3-5.1 { |
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166 | execsql { |
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167 | SELECT log, count(*), avg(n), max(n+log*2) FROM t1 |
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168 | GROUP BY log |
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169 | ORDER BY max(n+log*2)+0, avg(n)+0 |
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170 | } |
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171 | } {0 1 1.0 1 1 1 2.0 4 2 2 3.5 8 3 4 6.5 14 4 8 12.5 24 5 15 24.0 41} |
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172 | do_test select3-5.2 { |
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173 | execsql { |
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174 | SELECT log, count(*), avg(n), max(n+log*2) FROM t1 |
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175 | GROUP BY log |
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176 | ORDER BY max(n+log*2)+0, min(log,avg(n))+0 |
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177 | } |
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178 | } {0 1 1.0 1 1 1 2.0 4 2 2 3.5 8 3 4 6.5 14 4 8 12.5 24 5 15 24.0 41} |
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179 | |||
180 | # Test sorting of GROUP BY results in the presence of an index |
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181 | # on the GROUP BY column. |
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182 | # |
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183 | do_test select3-6.1 { |
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184 | execsql { |
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185 | SELECT log, min(n) FROM t1 GROUP BY log ORDER BY log; |
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186 | } |
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187 | } {0 1 1 2 2 3 3 5 4 9 5 17} |
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188 | do_test select3-6.2 { |
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189 | execsql { |
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190 | SELECT log, min(n) FROM t1 GROUP BY log ORDER BY log DESC; |
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191 | } |
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192 | } {5 17 4 9 3 5 2 3 1 2 0 1} |
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193 | do_test select3-6.3 { |
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194 | execsql { |
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195 | SELECT log, min(n) FROM t1 GROUP BY log ORDER BY 1; |
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196 | } |
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197 | } {0 1 1 2 2 3 3 5 4 9 5 17} |
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198 | do_test select3-6.4 { |
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199 | execsql { |
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200 | SELECT log, min(n) FROM t1 GROUP BY log ORDER BY 1 DESC; |
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201 | } |
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202 | } {5 17 4 9 3 5 2 3 1 2 0 1} |
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203 | do_test select3-6.5 { |
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204 | execsql { |
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205 | CREATE INDEX i1 ON t1(log); |
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206 | SELECT log, min(n) FROM t1 GROUP BY log ORDER BY log; |
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207 | } |
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208 | } {0 1 1 2 2 3 3 5 4 9 5 17} |
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209 | do_test select3-6.6 { |
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210 | execsql { |
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211 | SELECT log, min(n) FROM t1 GROUP BY log ORDER BY log DESC; |
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212 | } |
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213 | } {5 17 4 9 3 5 2 3 1 2 0 1} |
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214 | do_test select3-6.7 { |
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215 | execsql { |
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216 | SELECT log, min(n) FROM t1 GROUP BY log ORDER BY 1; |
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217 | } |
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218 | } {0 1 1 2 2 3 3 5 4 9 5 17} |
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219 | do_test select3-6.8 { |
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220 | execsql { |
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221 | SELECT log, min(n) FROM t1 GROUP BY log ORDER BY 1 DESC; |
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222 | } |
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223 | } {5 17 4 9 3 5 2 3 1 2 0 1} |
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224 | |||
225 | # Sometimes an aggregate query can return no rows at all. |
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226 | # |
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227 | do_test select3-7.1 { |
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228 | execsql { |
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229 | CREATE TABLE t2(a,b); |
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230 | INSERT INTO t2 VALUES(1,2); |
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231 | SELECT a, sum(b) FROM t2 WHERE b=5 GROUP BY a; |
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232 | } |
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233 | } {} |
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234 | do_test select3-7.2 { |
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235 | execsql { |
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236 | SELECT a, sum(b) FROM t2 WHERE b=5; |
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237 | } |
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238 | } {{} {}} |
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239 | |||
240 | # If a table column is of type REAL but we are storing integer values |
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241 | # in it, the values are stored as integers to take up less space. The |
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242 | # values are converted by to REAL as they are read out of the table. |
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243 | # Make sure the GROUP BY clause does this conversion correctly. |
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244 | # Ticket #2251. |
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245 | # |
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246 | do_test select3-8.1 { |
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247 | execsql { |
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248 | CREATE TABLE A ( |
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249 | A1 DOUBLE, |
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250 | A2 VARCHAR COLLATE NOCASE, |
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251 | A3 DOUBLE |
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252 | ); |
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253 | INSERT INTO A VALUES(39136,'ABC',1201900000); |
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254 | INSERT INTO A VALUES(39136,'ABC',1207000000); |
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255 | SELECT typeof(sum(a3)) FROM a; |
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256 | } |
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257 | } {real} |
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258 | do_test select3-8.2 { |
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259 | execsql { |
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260 | SELECT typeof(sum(a3)) FROM a GROUP BY a1; |
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261 | } |
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262 | } {real} |
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263 | |||
264 | finish_test |