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 SELECT statements that contain |
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13 | # aggregate min() and max() functions and which are handled as |
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14 | # as a special case. |
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15 | # |
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16 | # $Id: minmax.test,v 1.21 2008/07/08 18:05:26 drh Exp $ |
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17 | |||
18 | set testdir [file dirname $argv0] |
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19 | source $testdir/tester.tcl |
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20 | |||
21 | do_test minmax-1.0 { |
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22 | execsql { |
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23 | BEGIN; |
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24 | CREATE TABLE t1(x, y); |
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25 | INSERT INTO t1 VALUES(1,1); |
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26 | INSERT INTO t1 VALUES(2,2); |
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27 | INSERT INTO t1 VALUES(3,2); |
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28 | INSERT INTO t1 VALUES(4,3); |
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29 | INSERT INTO t1 VALUES(5,3); |
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30 | INSERT INTO t1 VALUES(6,3); |
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31 | INSERT INTO t1 VALUES(7,3); |
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32 | INSERT INTO t1 VALUES(8,4); |
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33 | INSERT INTO t1 VALUES(9,4); |
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34 | INSERT INTO t1 VALUES(10,4); |
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35 | INSERT INTO t1 VALUES(11,4); |
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36 | INSERT INTO t1 VALUES(12,4); |
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37 | INSERT INTO t1 VALUES(13,4); |
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38 | INSERT INTO t1 VALUES(14,4); |
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39 | INSERT INTO t1 VALUES(15,4); |
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40 | INSERT INTO t1 VALUES(16,5); |
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41 | INSERT INTO t1 VALUES(17,5); |
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42 | INSERT INTO t1 VALUES(18,5); |
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43 | INSERT INTO t1 VALUES(19,5); |
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44 | INSERT INTO t1 VALUES(20,5); |
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45 | COMMIT; |
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46 | SELECT DISTINCT y FROM t1 ORDER BY y; |
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47 | } |
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48 | } {1 2 3 4 5} |
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49 | |||
50 | do_test minmax-1.1 { |
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51 | set sqlite_search_count 0 |
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52 | execsql {SELECT min(x) FROM t1} |
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53 | } {1} |
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54 | do_test minmax-1.2 { |
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55 | set sqlite_search_count |
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56 | } {19} |
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57 | do_test minmax-1.3 { |
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58 | set sqlite_search_count 0 |
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59 | execsql {SELECT max(x) FROM t1} |
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60 | } {20} |
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61 | do_test minmax-1.4 { |
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62 | set sqlite_search_count |
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63 | } {19} |
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64 | do_test minmax-1.5 { |
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65 | execsql {CREATE INDEX t1i1 ON t1(x)} |
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66 | set sqlite_search_count 0 |
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67 | execsql {SELECT min(x) FROM t1} |
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68 | } {1} |
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69 | do_test minmax-1.6 { |
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70 | set sqlite_search_count |
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71 | } {1} |
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72 | do_test minmax-1.7 { |
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73 | set sqlite_search_count 0 |
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74 | execsql {SELECT max(x) FROM t1} |
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75 | } {20} |
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76 | do_test minmax-1.8 { |
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77 | set sqlite_search_count |
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78 | } {0} |
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79 | do_test minmax-1.9 { |
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80 | set sqlite_search_count 0 |
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81 | execsql {SELECT max(y) FROM t1} |
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82 | } {5} |
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83 | do_test minmax-1.10 { |
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84 | set sqlite_search_count |
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85 | } {19} |
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86 | |||
87 | do_test minmax-1.21 { |
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88 | execsql {SELECT min(x) FROM t1 WHERE x=5} |
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89 | } {5} |
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90 | do_test minmax-1.22 { |
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91 | execsql {SELECT min(x) FROM t1 WHERE x>=5} |
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92 | } {5} |
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93 | do_test minmax-1.23 { |
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94 | execsql {SELECT min(x) FROM t1 WHERE x>=4.5} |
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95 | } {5} |
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96 | do_test minmax-1.24 { |
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97 | execsql {SELECT min(x) FROM t1 WHERE x<4.5} |
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98 | } {1} |
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99 | |||
100 | do_test minmax-2.0 { |
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101 | execsql { |
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102 | CREATE TABLE t2(a INTEGER PRIMARY KEY, b); |
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103 | INSERT INTO t2 SELECT * FROM t1; |
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104 | } |
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105 | set sqlite_search_count 0 |
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106 | execsql {SELECT min(a) FROM t2} |
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107 | } {1} |
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108 | do_test minmax-2.1 { |
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109 | set sqlite_search_count |
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110 | } {0} |
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111 | do_test minmax-2.2 { |
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112 | set sqlite_search_count 0 |
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113 | execsql {SELECT max(a) FROM t2} |
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114 | } {20} |
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115 | do_test minmax-2.3 { |
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116 | set sqlite_search_count |
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117 | } {0} |
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118 | |||
119 | do_test minmax-3.0 { |
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120 | ifcapable subquery { |
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121 | execsql {INSERT INTO t2 VALUES((SELECT max(a) FROM t2)+1,999)} |
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122 | } else { |
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123 | db function max_a_t2 {execsql {SELECT max(a) FROM t2}} |
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124 | execsql {INSERT INTO t2 VALUES(max_a_t2()+1,999)} |
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125 | } |
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126 | set sqlite_search_count 0 |
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127 | execsql {SELECT max(a) FROM t2} |
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128 | } {21} |
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129 | do_test minmax-3.1 { |
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130 | set sqlite_search_count |
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131 | } {0} |
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132 | do_test minmax-3.2 { |
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133 | ifcapable subquery { |
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134 | execsql {INSERT INTO t2 VALUES((SELECT max(a) FROM t2)+1,999)} |
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135 | } else { |
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136 | db function max_a_t2 {execsql {SELECT max(a) FROM t2}} |
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137 | execsql {INSERT INTO t2 VALUES(max_a_t2()+1,999)} |
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138 | } |
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139 | set sqlite_search_count 0 |
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140 | ifcapable subquery { |
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141 | execsql { SELECT b FROM t2 WHERE a=(SELECT max(a) FROM t2) } |
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142 | } else { |
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143 | execsql { SELECT b FROM t2 WHERE a=max_a_t2() } |
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144 | } |
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145 | } {999} |
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146 | do_test minmax-3.3 { |
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147 | set sqlite_search_count |
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148 | } {0} |
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149 | |||
150 | ifcapable {compound && subquery} { |
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151 | do_test minmax-4.1 { |
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152 | execsql { |
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153 | SELECT coalesce(min(x+0),-1), coalesce(max(x+0),-1) FROM |
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154 | (SELECT * FROM t1 UNION SELECT NULL as 'x', NULL as 'y') |
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155 | } |
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156 | } {1 20} |
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157 | do_test minmax-4.2 { |
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158 | execsql { |
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159 | SELECT y, coalesce(sum(x),0) FROM |
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160 | (SELECT null AS x, y+1 AS y FROM t1 UNION SELECT * FROM t1) |
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161 | GROUP BY y ORDER BY y; |
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162 | } |
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163 | } {1 1 2 5 3 22 4 92 5 90 6 0} |
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164 | do_test minmax-4.3 { |
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165 | execsql { |
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166 | SELECT y, count(x), count(*) FROM |
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167 | (SELECT null AS x, y+1 AS y FROM t1 UNION SELECT * FROM t1) |
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168 | GROUP BY y ORDER BY y; |
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169 | } |
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170 | } {1 1 1 2 2 3 3 4 5 4 8 9 5 5 6 6 0 1} |
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171 | } ;# ifcapable compound |
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172 | |||
173 | # Make sure the min(x) and max(x) optimizations work on empty tables |
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174 | # including empty tables with indices. Ticket #296. |
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175 | # |
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176 | do_test minmax-5.1 { |
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177 | execsql { |
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178 | CREATE TABLE t3(x INTEGER UNIQUE NOT NULL); |
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179 | SELECT coalesce(min(x),999) FROM t3; |
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180 | } |
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181 | } {999} |
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182 | do_test minmax-5.2 { |
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183 | execsql { |
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184 | SELECT coalesce(min(rowid),999) FROM t3; |
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185 | } |
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186 | } {999} |
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187 | do_test minmax-5.3 { |
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188 | execsql { |
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189 | SELECT coalesce(max(x),999) FROM t3; |
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190 | } |
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191 | } {999} |
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192 | do_test minmax-5.4 { |
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193 | execsql { |
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194 | SELECT coalesce(max(rowid),999) FROM t3; |
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195 | } |
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196 | } {999} |
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197 | do_test minmax-5.5 { |
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198 | execsql { |
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199 | SELECT coalesce(max(rowid),999) FROM t3 WHERE rowid<25; |
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200 | } |
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201 | } {999} |
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202 | |||
203 | # Make sure the min(x) and max(x) optimizations work when there |
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204 | # is a LIMIT clause. Ticket #396. |
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205 | # |
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206 | do_test minmax-6.1 { |
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207 | execsql { |
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208 | SELECT min(a) FROM t2 LIMIT 1 |
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209 | } |
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210 | } {1} |
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211 | do_test minmax-6.2 { |
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212 | execsql { |
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213 | SELECT max(a) FROM t2 LIMIT 3 |
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214 | } |
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215 | } {22} |
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216 | do_test minmax-6.3 { |
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217 | execsql { |
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218 | SELECT min(a) FROM t2 LIMIT 0,100 |
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219 | } |
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220 | } {1} |
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221 | do_test minmax-6.4 { |
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222 | execsql { |
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223 | SELECT max(a) FROM t2 LIMIT 1,100 |
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224 | } |
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225 | } {} |
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226 | do_test minmax-6.5 { |
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227 | execsql { |
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228 | SELECT min(x) FROM t3 LIMIT 1 |
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229 | } |
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230 | } {{}} |
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231 | do_test minmax-6.6 { |
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232 | execsql { |
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233 | SELECT max(x) FROM t3 LIMIT 0 |
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234 | } |
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235 | } {} |
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236 | do_test minmax-6.7 { |
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237 | execsql { |
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238 | SELECT max(a) FROM t2 LIMIT 0 |
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239 | } |
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240 | } {} |
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241 | |||
242 | # Make sure the max(x) and min(x) optimizations work for nested |
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243 | # queries. Ticket #587. |
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244 | # |
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245 | do_test minmax-7.1 { |
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246 | execsql { |
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247 | SELECT max(x) FROM t1; |
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248 | } |
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249 | } 20 |
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250 | ifcapable subquery { |
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251 | do_test minmax-7.2 { |
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252 | execsql { |
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253 | SELECT * FROM (SELECT max(x) FROM t1); |
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254 | } |
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255 | } 20 |
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256 | } |
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257 | do_test minmax-7.3 { |
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258 | execsql { |
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259 | SELECT min(x) FROM t1; |
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260 | } |
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261 | } 1 |
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262 | ifcapable subquery { |
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263 | do_test minmax-7.4 { |
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264 | execsql { |
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265 | SELECT * FROM (SELECT min(x) FROM t1); |
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266 | } |
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267 | } 1 |
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268 | } |
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269 | |||
270 | # Make sure min(x) and max(x) work correctly when the datatype is |
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271 | # TEXT instead of NUMERIC. Ticket #623. |
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272 | # |
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273 | do_test minmax-8.1 { |
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274 | execsql { |
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275 | CREATE TABLE t4(a TEXT); |
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276 | INSERT INTO t4 VALUES('1234'); |
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277 | INSERT INTO t4 VALUES('234'); |
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278 | INSERT INTO t4 VALUES('34'); |
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279 | SELECT min(a), max(a) FROM t4; |
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280 | } |
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281 | } {1234 34} |
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282 | do_test minmax-8.2 { |
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283 | execsql { |
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284 | CREATE TABLE t5(a INTEGER); |
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285 | INSERT INTO t5 VALUES('1234'); |
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286 | INSERT INTO t5 VALUES('234'); |
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287 | INSERT INTO t5 VALUES('34'); |
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288 | SELECT min(a), max(a) FROM t5; |
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289 | } |
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290 | } {34 1234} |
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291 | |||
292 | # Ticket #658: Test the min()/max() optimization when the FROM clause |
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293 | # is a subquery. |
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294 | # |
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295 | ifcapable {compound && subquery} { |
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296 | do_test minmax-9.1 { |
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297 | execsql { |
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298 | SELECT max(rowid) FROM ( |
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299 | SELECT max(rowid) FROM t4 UNION SELECT max(rowid) FROM t5 |
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300 | ) |
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301 | } |
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302 | } {1} |
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303 | do_test minmax-9.2 { |
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304 | execsql { |
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305 | SELECT max(rowid) FROM ( |
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306 | SELECT max(rowid) FROM t4 EXCEPT SELECT max(rowid) FROM t5 |
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307 | ) |
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308 | } |
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309 | } {{}} |
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310 | } ;# ifcapable compound&&subquery |
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311 | |||
312 | # If there is a NULL in an aggregate max() or min(), ignore it. An |
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313 | # aggregate min() or max() will only return NULL if all values are NULL. |
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314 | # |
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315 | do_test minmax-10.1 { |
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316 | execsql { |
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317 | CREATE TABLE t6(x); |
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318 | INSERT INTO t6 VALUES(1); |
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319 | INSERT INTO t6 VALUES(2); |
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320 | INSERT INTO t6 VALUES(NULL); |
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321 | SELECT coalesce(min(x),-1) FROM t6; |
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322 | } |
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323 | } {1} |
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324 | do_test minmax-10.2 { |
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325 | execsql { |
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326 | SELECT max(x) FROM t6; |
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327 | } |
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328 | } {2} |
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329 | do_test minmax-10.3 { |
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330 | execsql { |
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331 | CREATE INDEX i6 ON t6(x); |
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332 | SELECT coalesce(min(x),-1) FROM t6; |
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333 | } |
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334 | } {1} |
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335 | do_test minmax-10.4 { |
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336 | execsql { |
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337 | SELECT max(x) FROM t6; |
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338 | } |
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339 | } {2} |
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340 | do_test minmax-10.5 { |
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341 | execsql { |
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342 | DELETE FROM t6 WHERE x NOT NULL; |
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343 | SELECT count(*) FROM t6; |
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344 | } |
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345 | } 1 |
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346 | do_test minmax-10.6 { |
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347 | execsql { |
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348 | SELECT count(x) FROM t6; |
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349 | } |
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350 | } 0 |
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351 | ifcapable subquery { |
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352 | do_test minmax-10.7 { |
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353 | execsql { |
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354 | SELECT (SELECT min(x) FROM t6), (SELECT max(x) FROM t6); |
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355 | } |
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356 | } {{} {}} |
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357 | } |
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358 | do_test minmax-10.8 { |
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359 | execsql { |
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360 | SELECT min(x), max(x) FROM t6; |
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361 | } |
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362 | } {{} {}} |
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363 | do_test minmax-10.9 { |
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364 | execsql { |
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365 | INSERT INTO t6 SELECT * FROM t6; |
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366 | INSERT INTO t6 SELECT * FROM t6; |
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367 | INSERT INTO t6 SELECT * FROM t6; |
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368 | INSERT INTO t6 SELECT * FROM t6; |
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369 | INSERT INTO t6 SELECT * FROM t6; |
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370 | INSERT INTO t6 SELECT * FROM t6; |
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371 | INSERT INTO t6 SELECT * FROM t6; |
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372 | INSERT INTO t6 SELECT * FROM t6; |
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373 | INSERT INTO t6 SELECT * FROM t6; |
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374 | INSERT INTO t6 SELECT * FROM t6; |
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375 | SELECT count(*) FROM t6; |
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376 | } |
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377 | } 1024 |
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378 | do_test minmax-10.10 { |
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379 | execsql { |
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380 | SELECT count(x) FROM t6; |
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381 | } |
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382 | } 0 |
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383 | ifcapable subquery { |
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384 | do_test minmax-10.11 { |
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385 | execsql { |
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386 | SELECT (SELECT min(x) FROM t6), (SELECT max(x) FROM t6); |
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387 | } |
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388 | } {{} {}} |
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389 | } |
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390 | do_test minmax-10.12 { |
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391 | execsql { |
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392 | SELECT min(x), max(x) FROM t6; |
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393 | } |
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394 | } {{} {}} |
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395 | |||
396 | |||
397 | do_test minmax-11.1 { |
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398 | execsql { |
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399 | CREATE INDEX t1i2 ON t1(y,x); |
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400 | SELECT min(x) FROM t1 WHERE y=5; |
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401 | } |
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402 | } {16} |
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403 | do_test minmax-11.2 { |
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404 | execsql { |
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405 | SELECT max(x) FROM t1 WHERE y=5; |
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406 | } |
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407 | } {20} |
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408 | do_test minmax-11.3 { |
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409 | execsql { |
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410 | SELECT min(x) FROM t1 WHERE y=6; |
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411 | } |
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412 | } {{}} |
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413 | do_test minmax-11.4 { |
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414 | execsql { |
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415 | SELECT max(x) FROM t1 WHERE y=6; |
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416 | } |
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417 | } {{}} |
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418 | do_test minmax-11.5 { |
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419 | execsql { |
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420 | SELECT min(x) FROM t1 WHERE y=1; |
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421 | } |
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422 | } {1} |
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423 | do_test minmax-11.6 { |
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424 | execsql { |
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425 | SELECT max(x) FROM t1 WHERE y=1; |
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426 | } |
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427 | } {1} |
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428 | do_test minmax-11.7 { |
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429 | execsql { |
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430 | SELECT min(x) FROM t1 WHERE y=0; |
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431 | } |
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432 | } {{}} |
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433 | do_test minmax-11.8 { |
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434 | execsql { |
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435 | SELECT max(x) FROM t1 WHERE y=0; |
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436 | } |
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437 | } {{}} |
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438 | do_test minmax-11.9 { |
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439 | execsql { |
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440 | SELECT min(x) FROM t1 WHERE y=5 AND x>=17.5; |
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441 | } |
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442 | } {18} |
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443 | do_test minmax-11.10 { |
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444 | execsql { |
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445 | SELECT max(x) FROM t1 WHERE y=5 AND x>=17.5; |
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446 | } |
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447 | } {20} |
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448 | |||
449 | do_test minmax-12.1 { |
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450 | execsql { |
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451 | CREATE TABLE t7(a,b,c); |
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452 | INSERT INTO t7 SELECT y, x, x*y FROM t1; |
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453 | INSERT INTO t7 SELECT y, x, x*y+1000 FROM t1; |
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454 | CREATE INDEX t7i1 ON t7(a,b,c); |
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455 | SELECT min(a) FROM t7; |
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456 | } |
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457 | } {1} |
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458 | do_test minmax-12.2 { |
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459 | execsql { |
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460 | SELECT max(a) FROM t7; |
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461 | } |
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462 | } {5} |
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463 | do_test minmax-12.3 { |
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464 | execsql { |
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465 | SELECT max(a) FROM t7 WHERE a=5; |
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466 | } |
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467 | } {5} |
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468 | do_test minmax-12.4 { |
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469 | execsql { |
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470 | SELECT min(b) FROM t7 WHERE a=5; |
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471 | } |
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472 | } {16} |
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473 | do_test minmax-12.5 { |
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474 | execsql { |
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475 | SELECT max(b) FROM t7 WHERE a=5; |
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476 | } |
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477 | } {20} |
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478 | do_test minmax-12.6 { |
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479 | execsql { |
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480 | SELECT min(b) FROM t7 WHERE a=4; |
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481 | } |
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482 | } {8} |
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483 | do_test minmax-12.7 { |
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484 | execsql { |
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485 | SELECT max(b) FROM t7 WHERE a=4; |
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486 | } |
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487 | } {15} |
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488 | do_test minmax-12.8 { |
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489 | execsql { |
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490 | SELECT min(c) FROM t7 WHERE a=4 AND b=10; |
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491 | } |
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492 | } {40} |
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493 | do_test minmax-12.9 { |
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494 | execsql { |
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495 | SELECT max(c) FROM t7 WHERE a=4 AND b=10; |
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496 | } |
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497 | } {1040} |
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498 | do_test minmax-12.10 { |
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499 | execsql { |
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500 | SELECT min(rowid) FROM t7; |
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501 | } |
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502 | } {1} |
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503 | do_test minmax-12.11 { |
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504 | execsql { |
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505 | SELECT max(rowid) FROM t7; |
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506 | } |
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507 | } {40} |
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508 | do_test minmax-12.12 { |
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509 | execsql { |
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510 | SELECT min(rowid) FROM t7 WHERE a=3; |
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511 | } |
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512 | } {4} |
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513 | do_test minmax-12.13 { |
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514 | execsql { |
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515 | SELECT max(rowid) FROM t7 WHERE a=3; |
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516 | } |
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517 | } {27} |
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518 | do_test minmax-12.14 { |
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519 | execsql { |
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520 | SELECT min(rowid) FROM t7 WHERE a=3 AND b=5; |
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521 | } |
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522 | } {5} |
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523 | do_test minmax-12.15 { |
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524 | execsql { |
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525 | SELECT max(rowid) FROM t7 WHERE a=3 AND b=5; |
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526 | } |
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527 | } {25} |
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528 | do_test minmax-12.16 { |
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529 | execsql { |
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530 | SELECT min(rowid) FROM t7 WHERE a=3 AND b=5 AND c=1015; |
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531 | } |
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532 | } {25} |
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533 | do_test minmax-12.17 { |
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534 | execsql { |
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535 | SELECT max(rowid) FROM t7 WHERE a=3 AND b=5 AND c=15; |
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536 | } |
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537 | } {5} |
||
538 | |||
539 | |||
540 | |||
541 | |||
542 | finish_test |