wasCSharpSQLite – Blame information for rev 1
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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 | # subqueries in their FROM clause. |
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14 | # |
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15 | # $Id: select6.test,v 1.29 2009/01/09 01:12:28 drh 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 | # Omit this whole file if the library is build without subquery support. |
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21 | ifcapable !subquery { |
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22 | finish_test |
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23 | return |
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24 | } |
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25 | |||
26 | do_test select6-1.0 { |
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27 | execsql { |
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28 | BEGIN; |
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29 | CREATE TABLE t1(x, y); |
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30 | INSERT INTO t1 VALUES(1,1); |
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31 | INSERT INTO t1 VALUES(2,2); |
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32 | INSERT INTO t1 VALUES(3,2); |
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33 | INSERT INTO t1 VALUES(4,3); |
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34 | INSERT INTO t1 VALUES(5,3); |
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35 | INSERT INTO t1 VALUES(6,3); |
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36 | INSERT INTO t1 VALUES(7,3); |
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37 | INSERT INTO t1 VALUES(8,4); |
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38 | INSERT INTO t1 VALUES(9,4); |
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39 | INSERT INTO t1 VALUES(10,4); |
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40 | INSERT INTO t1 VALUES(11,4); |
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41 | INSERT INTO t1 VALUES(12,4); |
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42 | INSERT INTO t1 VALUES(13,4); |
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43 | INSERT INTO t1 VALUES(14,4); |
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44 | INSERT INTO t1 VALUES(15,4); |
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45 | INSERT INTO t1 VALUES(16,5); |
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46 | INSERT INTO t1 VALUES(17,5); |
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47 | INSERT INTO t1 VALUES(18,5); |
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48 | INSERT INTO t1 VALUES(19,5); |
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49 | INSERT INTO t1 VALUES(20,5); |
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50 | COMMIT; |
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51 | SELECT DISTINCT y FROM t1 ORDER BY y; |
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52 | } |
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53 | } {1 2 3 4 5} |
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54 | |||
55 | do_test select6-1.1 { |
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56 | execsql2 {SELECT * FROM (SELECT x, y FROM t1 WHERE x<2)} |
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57 | } {x 1 y 1} |
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58 | do_test select6-1.2 { |
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59 | execsql {SELECT count(*) FROM (SELECT y FROM t1)} |
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60 | } {20} |
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61 | do_test select6-1.3 { |
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62 | execsql {SELECT count(*) FROM (SELECT DISTINCT y FROM t1)} |
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63 | } {5} |
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64 | do_test select6-1.4 { |
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65 | execsql {SELECT count(*) FROM (SELECT DISTINCT * FROM (SELECT y FROM t1))} |
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66 | } {5} |
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67 | do_test select6-1.5 { |
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68 | execsql {SELECT count(*) FROM (SELECT * FROM (SELECT DISTINCT y FROM t1))} |
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69 | } {5} |
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70 | |||
71 | do_test select6-1.6 { |
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72 | execsql { |
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73 | SELECT * |
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74 | FROM (SELECT count(*),y FROM t1 GROUP BY y) AS a, |
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75 | (SELECT max(x),y FROM t1 GROUP BY y) as b |
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76 | WHERE a.y=b.y ORDER BY a.y |
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77 | } |
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78 | } {1 1 1 1 2 2 3 2 4 3 7 3 8 4 15 4 5 5 20 5} |
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79 | do_test select6-1.7 { |
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80 | execsql { |
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81 | SELECT a.y, a.[count(*)], [max(x)], [count(*)] |
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82 | FROM (SELECT count(*),y FROM t1 GROUP BY y) AS a, |
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83 | (SELECT max(x),y FROM t1 GROUP BY y) as b |
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84 | WHERE a.y=b.y ORDER BY a.y |
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85 | } |
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86 | } {1 1 1 1 2 2 3 2 3 4 7 4 4 8 15 8 5 5 20 5} |
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87 | do_test select6-1.8 { |
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88 | execsql { |
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89 | SELECT q, p, r |
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90 | FROM (SELECT count(*) as p , y as q FROM t1 GROUP BY y) AS a, |
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91 | (SELECT max(x) as r, y as s FROM t1 GROUP BY y) as b |
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92 | WHERE q=s ORDER BY s |
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93 | } |
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94 | } {1 1 1 2 2 3 3 4 7 4 8 15 5 5 20} |
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95 | do_test select6-1.9 { |
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96 | execsql { |
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97 | SELECT q, p, r, b.[min(x)+y] |
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98 | FROM (SELECT count(*) as p , y as q FROM t1 GROUP BY y) AS a, |
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99 | (SELECT max(x) as r, y as s, min(x)+y FROM t1 GROUP BY y) as b |
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100 | WHERE q=s ORDER BY s |
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101 | } |
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102 | } {1 1 1 2 2 2 3 4 3 4 7 7 4 8 15 12 5 5 20 21} |
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103 | |||
104 | do_test select6-2.0 { |
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105 | execsql { |
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106 | CREATE TABLE t2(a INTEGER PRIMARY KEY, b); |
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107 | INSERT INTO t2 SELECT * FROM t1; |
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108 | SELECT DISTINCT b FROM t2 ORDER BY b; |
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109 | } |
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110 | } {1 2 3 4 5} |
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111 | do_test select6-2.1 { |
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112 | execsql2 {SELECT * FROM (SELECT a, b FROM t2 WHERE a<2)} |
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113 | } {a 1 b 1} |
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114 | do_test select6-2.2 { |
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115 | execsql {SELECT count(*) FROM (SELECT b FROM t2)} |
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116 | } {20} |
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117 | do_test select6-2.3 { |
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118 | execsql {SELECT count(*) FROM (SELECT DISTINCT b FROM t2)} |
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119 | } {5} |
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120 | do_test select6-2.4 { |
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121 | execsql {SELECT count(*) FROM (SELECT DISTINCT * FROM (SELECT b FROM t2))} |
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122 | } {5} |
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123 | do_test select6-2.5 { |
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124 | execsql {SELECT count(*) FROM (SELECT * FROM (SELECT DISTINCT b FROM t2))} |
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125 | } {5} |
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126 | |||
127 | do_test select6-2.6 { |
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128 | execsql { |
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129 | SELECT * |
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130 | FROM (SELECT count(*),b FROM t2 GROUP BY b) AS a, |
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131 | (SELECT max(a),b FROM t2 GROUP BY b) as b |
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132 | WHERE a.b=b.b ORDER BY a.b |
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133 | } |
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134 | } {1 1 1 1 2 2 3 2 4 3 7 3 8 4 15 4 5 5 20 5} |
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135 | do_test select6-2.7 { |
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136 | execsql { |
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137 | SELECT a.b, a.[count(*)], [max(a)], [count(*)] |
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138 | FROM (SELECT count(*),b FROM t2 GROUP BY b) AS a, |
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139 | (SELECT max(a),b FROM t2 GROUP BY b) as b |
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140 | WHERE a.b=b.b ORDER BY a.b |
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141 | } |
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142 | } {1 1 1 1 2 2 3 2 3 4 7 4 4 8 15 8 5 5 20 5} |
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143 | do_test select6-2.8 { |
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144 | execsql { |
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145 | SELECT q, p, r |
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146 | FROM (SELECT count(*) as p , b as q FROM t2 GROUP BY b) AS a, |
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147 | (SELECT max(a) as r, b as s FROM t2 GROUP BY b) as b |
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148 | WHERE q=s ORDER BY s |
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149 | } |
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150 | } {1 1 1 2 2 3 3 4 7 4 8 15 5 5 20} |
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151 | do_test select6-2.9 { |
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152 | execsql { |
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153 | SELECT a.q, a.p, b.r |
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154 | FROM (SELECT count(*) as p , b as q FROM t2 GROUP BY q) AS a, |
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155 | (SELECT max(a) as r, b as s FROM t2 GROUP BY s) as b |
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156 | WHERE a.q=b.s ORDER BY a.q |
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157 | } |
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158 | } {1 1 1 2 2 3 3 4 7 4 8 15 5 5 20} |
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159 | |||
160 | do_test select6-3.1 { |
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161 | execsql2 { |
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162 | SELECT * FROM (SELECT * FROM (SELECT * FROM t1 WHERE x=3)); |
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163 | } |
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164 | } {x 3 y 2} |
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165 | do_test select6-3.2 { |
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166 | execsql { |
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167 | SELECT * FROM |
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168 | (SELECT a.q, a.p, b.r |
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169 | FROM (SELECT count(*) as p , b as q FROM t2 GROUP BY q) AS a, |
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170 | (SELECT max(a) as r, b as s FROM t2 GROUP BY s) as b |
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171 | WHERE a.q=b.s ORDER BY a.q) |
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172 | ORDER BY "a.q" |
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173 | } |
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174 | } {1 1 1 2 2 3 3 4 7 4 8 15 5 5 20} |
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175 | do_test select6-3.3 { |
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176 | execsql { |
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177 | SELECT a,b,a+b FROM (SELECT avg(x) as 'a', avg(y) as 'b' FROM t1) |
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178 | } |
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179 | } {10.5 3.7 14.2} |
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180 | do_test select6-3.4 { |
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181 | execsql { |
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182 | SELECT a,b,a+b FROM (SELECT avg(x) as 'a', avg(y) as 'b' FROM t1 WHERE y=4) |
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183 | } |
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184 | } {11.5 4.0 15.5} |
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185 | do_test select6-3.5 { |
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186 | execsql { |
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187 | SELECT x,y,x+y FROM (SELECT avg(a) as 'x', avg(b) as 'y' FROM t2 WHERE a=4) |
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188 | } |
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189 | } {4.0 3.0 7.0} |
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190 | do_test select6-3.6 { |
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191 | execsql { |
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192 | SELECT a,b,a+b FROM (SELECT avg(x) as 'a', avg(y) as 'b' FROM t1) |
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193 | WHERE a>10 |
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194 | } |
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195 | } {10.5 3.7 14.2} |
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196 | do_test select6-3.7 { |
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197 | execsql { |
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198 | SELECT a,b,a+b FROM (SELECT avg(x) as 'a', avg(y) as 'b' FROM t1) |
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199 | WHERE a<10 |
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200 | } |
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201 | } {} |
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202 | do_test select6-3.8 { |
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203 | execsql { |
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204 | SELECT a,b,a+b FROM (SELECT avg(x) as 'a', avg(y) as 'b' FROM t1 WHERE y=4) |
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205 | WHERE a>10 |
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206 | } |
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207 | } {11.5 4.0 15.5} |
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208 | do_test select6-3.9 { |
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209 | execsql { |
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210 | SELECT a,b,a+b FROM (SELECT avg(x) as 'a', avg(y) as 'b' FROM t1 WHERE y=4) |
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211 | WHERE a<10 |
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212 | } |
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213 | } {} |
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214 | do_test select6-3.10 { |
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215 | execsql { |
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216 | SELECT a,b,a+b FROM (SELECT avg(x) as 'a', y as 'b' FROM t1 GROUP BY b) |
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217 | ORDER BY a |
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218 | } |
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219 | } {1.0 1 2.0 2.5 2 4.5 5.5 3 8.5 11.5 4 15.5 18.0 5 23.0} |
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220 | do_test select6-3.11 { |
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221 | execsql { |
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222 | SELECT a,b,a+b FROM |
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223 | (SELECT avg(x) as 'a', y as 'b' FROM t1 GROUP BY b) |
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224 | WHERE b<4 ORDER BY a |
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225 | } |
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226 | } {1.0 1 2.0 2.5 2 4.5 5.5 3 8.5} |
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227 | do_test select6-3.12 { |
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228 | execsql { |
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229 | SELECT a,b,a+b FROM |
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230 | (SELECT avg(x) as 'a', y as 'b' FROM t1 GROUP BY b HAVING a>1) |
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231 | WHERE b<4 ORDER BY a |
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232 | } |
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233 | } {2.5 2 4.5 5.5 3 8.5} |
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234 | do_test select6-3.13 { |
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235 | execsql { |
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236 | SELECT a,b,a+b FROM |
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237 | (SELECT avg(x) as 'a', y as 'b' FROM t1 GROUP BY b HAVING a>1) |
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238 | ORDER BY a |
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239 | } |
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240 | } {2.5 2 4.5 5.5 3 8.5 11.5 4 15.5 18.0 5 23.0} |
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241 | do_test select6-3.14 { |
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242 | execsql { |
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243 | SELECT [count(*)],y FROM (SELECT count(*), y FROM t1 GROUP BY y) |
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244 | ORDER BY [count(*)] |
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245 | } |
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246 | } {1 1 2 2 4 3 5 5 8 4} |
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247 | do_test select6-3.15 { |
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248 | execsql { |
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249 | SELECT [count(*)],y FROM (SELECT count(*), y FROM t1 GROUP BY y) |
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250 | ORDER BY y |
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251 | } |
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252 | } {1 1 2 2 4 3 8 4 5 5} |
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253 | |||
254 | do_test select6-4.1 { |
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255 | execsql { |
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256 | SELECT a,b,c FROM |
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257 | (SELECT x AS 'a', y AS 'b', x+y AS 'c' FROM t1 WHERE y=4) |
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258 | WHERE a<10 ORDER BY a; |
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259 | } |
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260 | } {8 4 12 9 4 13} |
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261 | do_test select6-4.2 { |
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262 | execsql { |
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263 | SELECT y FROM (SELECT DISTINCT y FROM t1) WHERE y<5 ORDER BY y |
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264 | } |
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265 | } {1 2 3 4} |
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266 | do_test select6-4.3 { |
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267 | execsql { |
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268 | SELECT DISTINCT y FROM (SELECT y FROM t1) WHERE y<5 ORDER BY y |
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269 | } |
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270 | } {1 2 3 4} |
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271 | do_test select6-4.4 { |
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272 | execsql { |
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273 | SELECT avg(y) FROM (SELECT DISTINCT y FROM t1) WHERE y<5 ORDER BY y |
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274 | } |
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275 | } {2.5} |
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276 | do_test select6-4.5 { |
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277 | execsql { |
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278 | SELECT avg(y) FROM (SELECT DISTINCT y FROM t1 WHERE y<5) ORDER BY y |
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279 | } |
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280 | } {2.5} |
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281 | |||
282 | do_test select6-5.1 { |
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283 | execsql { |
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284 | SELECT a,x,b FROM |
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285 | (SELECT x+3 AS 'a', x FROM t1 WHERE y=3) AS 'p', |
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286 | (SELECT x AS 'b' FROM t1 WHERE y=4) AS 'q' |
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287 | WHERE a=b |
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288 | ORDER BY a |
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289 | } |
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290 | } {8 5 8 9 6 9 10 7 10} |
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291 | do_test select6-5.2 { |
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292 | execsql { |
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293 | SELECT a,x,b FROM |
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294 | (SELECT x+3 AS 'a', x FROM t1 WHERE y=3), |
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295 | (SELECT x AS 'b' FROM t1 WHERE y=4) |
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296 | WHERE a=b |
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297 | ORDER BY a |
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298 | } |
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299 | } {8 5 8 9 6 9 10 7 10} |
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300 | |||
301 | # Tests of compound sub-selects |
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302 | # |
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303 | do_test select6-6.1 { |
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304 | execsql { |
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305 | DELETE FROM t1 WHERE x>4; |
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306 | SELECT * FROM t1 |
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307 | } |
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308 | } {1 1 2 2 3 2 4 3} |
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309 | ifcapable compound { |
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310 | do_test select6-6.2 { |
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311 | execsql { |
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312 | SELECT * FROM ( |
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313 | SELECT x AS 'a' FROM t1 UNION ALL SELECT x+10 AS 'a' FROM t1 |
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314 | ) ORDER BY a; |
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315 | } |
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316 | } {1 2 3 4 11 12 13 14} |
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317 | do_test select6-6.3 { |
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318 | execsql { |
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319 | SELECT * FROM ( |
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320 | SELECT x AS 'a' FROM t1 UNION ALL SELECT x+1 AS 'a' FROM t1 |
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321 | ) ORDER BY a; |
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322 | } |
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323 | } {1 2 2 3 3 4 4 5} |
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324 | do_test select6-6.4 { |
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325 | execsql { |
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326 | SELECT * FROM ( |
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327 | SELECT x AS 'a' FROM t1 UNION SELECT x+1 AS 'a' FROM t1 |
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328 | ) ORDER BY a; |
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329 | } |
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330 | } {1 2 3 4 5} |
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331 | do_test select6-6.5 { |
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332 | execsql { |
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333 | SELECT * FROM ( |
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334 | SELECT x AS 'a' FROM t1 INTERSECT SELECT x+1 AS 'a' FROM t1 |
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335 | ) ORDER BY a; |
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336 | } |
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337 | } {2 3 4} |
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338 | do_test select6-6.6 { |
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339 | execsql { |
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340 | SELECT * FROM ( |
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341 | SELECT x AS 'a' FROM t1 EXCEPT SELECT x*2 AS 'a' FROM t1 |
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342 | ) ORDER BY a; |
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343 | } |
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344 | } {1 3} |
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345 | } ;# ifcapable compound |
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346 | |||
347 | # Subselects with no FROM clause |
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348 | # |
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349 | do_test select6-7.1 { |
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350 | execsql { |
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351 | SELECT * FROM (SELECT 1) |
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352 | } |
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353 | } {1} |
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354 | do_test select6-7.2 { |
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355 | execsql { |
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356 | SELECT c,b,a,* FROM (SELECT 1 AS 'a', 2 AS 'b', 'abc' AS 'c') |
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357 | } |
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358 | } {abc 2 1 1 2 abc} |
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359 | do_test select6-7.3 { |
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360 | execsql { |
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361 | SELECT c,b,a,* FROM (SELECT 1 AS 'a', 2 AS 'b', 'abc' AS 'c' WHERE 0) |
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362 | } |
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363 | } {} |
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364 | do_test select6-7.4 { |
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365 | execsql2 { |
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366 | SELECT c,b,a,* FROM (SELECT 1 AS 'a', 2 AS 'b', 'abc' AS 'c' WHERE 1) |
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367 | } |
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368 | } {c abc b 2 a 1 a 1 b 2 c abc} |
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369 | |||
370 | # The remaining tests in this file depend on the EXPLAIN keyword. |
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371 | # Skip these tests if EXPLAIN is disabled in the current build. |
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372 | # |
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373 | ifcapable {!explain} { |
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374 | finish_test |
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375 | return |
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376 | } |
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377 | |||
378 | # The following procedure compiles the SQL given as an argument and returns |
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379 | # TRUE if that SQL uses any transient tables and returns FALSE if no |
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380 | # transient tables are used. This is used to make sure that the |
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381 | # sqliteFlattenSubquery() routine in select.c is doing its job. |
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382 | # |
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383 | proc is_flat {sql} { |
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384 | return [expr 0>[lsearch [execsql "EXPLAIN $sql"] OpenEphemeral]] |
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385 | } |
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386 | |||
387 | # Check that the flattener works correctly for deeply nested subqueries |
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388 | # involving joins. |
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389 | # |
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390 | do_test select6-8.1 { |
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391 | execsql { |
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392 | BEGIN; |
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393 | CREATE TABLE t3(p,q); |
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394 | INSERT INTO t3 VALUES(1,11); |
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395 | INSERT INTO t3 VALUES(2,22); |
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396 | CREATE TABLE t4(q,r); |
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397 | INSERT INTO t4 VALUES(11,111); |
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398 | INSERT INTO t4 VALUES(22,222); |
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399 | COMMIT; |
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400 | SELECT * FROM t3 NATURAL JOIN t4; |
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401 | } |
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402 | } {1 11 111 2 22 222} |
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403 | do_test select6-8.2 { |
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404 | execsql { |
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405 | SELECT y, p, q, r FROM |
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406 | (SELECT t1.y AS y, t2.b AS b FROM t1, t2 WHERE t1.x=t2.a) AS m, |
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407 | (SELECT t3.p AS p, t3.q AS q, t4.r AS r FROM t3 NATURAL JOIN t4) as n |
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408 | WHERE y=p |
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409 | } |
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410 | } {1 1 11 111 2 2 22 222 2 2 22 222} |
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411 | # If view support is omitted from the build, then so is the query |
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412 | # "flattener". So omit this test and test select6-8.6 in that case. |
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413 | ifcapable view { |
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414 | do_test select6-8.3 { |
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415 | is_flat { |
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416 | SELECT y, p, q, r FROM |
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417 | (SELECT t1.y AS y, t2.b AS b FROM t1, t2 WHERE t1.x=t2.a) AS m, |
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418 | (SELECT t3.p AS p, t3.q AS q, t4.r AS r FROM t3 NATURAL JOIN t4) as n |
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419 | WHERE y=p |
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420 | } |
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421 | } {1} |
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422 | } ;# ifcapable view |
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423 | do_test select6-8.4 { |
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424 | execsql { |
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425 | SELECT DISTINCT y, p, q, r FROM |
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426 | (SELECT t1.y AS y, t2.b AS b FROM t1, t2 WHERE t1.x=t2.a) AS m, |
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427 | (SELECT t3.p AS p, t3.q AS q, t4.r AS r FROM t3 NATURAL JOIN t4) as n |
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428 | WHERE y=p |
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429 | } |
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430 | } {1 1 11 111 2 2 22 222} |
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431 | do_test select6-8.5 { |
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432 | execsql { |
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433 | SELECT * FROM |
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434 | (SELECT y, p, q, r FROM |
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435 | (SELECT t1.y AS y, t2.b AS b FROM t1, t2 WHERE t1.x=t2.a) AS m, |
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436 | (SELECT t3.p AS p, t3.q AS q, t4.r AS r FROM t3 NATURAL JOIN t4) as n |
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437 | WHERE y=p) AS e, |
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438 | (SELECT r AS z FROM t4 WHERE q=11) AS f |
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439 | WHERE e.r=f.z |
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440 | } |
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441 | } {1 1 11 111 111} |
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442 | ifcapable view { |
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443 | do_test select6-8.6 { |
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444 | is_flat { |
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445 | SELECT * FROM |
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446 | (SELECT y, p, q, r FROM |
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447 | (SELECT t1.y AS y, t2.b AS b FROM t1, t2 WHERE t1.x=t2.a) AS m, |
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448 | (SELECT t3.p AS p, t3.q AS q, t4.r AS r FROM t3 NATURAL JOIN t4) as n |
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449 | WHERE y=p) AS e, |
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450 | (SELECT r AS z FROM t4 WHERE q=11) AS f |
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451 | WHERE e.r=f.z |
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452 | } |
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453 | } {1} |
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454 | } ;# ifcapable view |
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455 | |||
456 | # Ticket #1634 |
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457 | # |
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458 | do_test select6-9.1 { |
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459 | execsql { |
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460 | SELECT a.x, b.x FROM t1 AS a, (SELECT x FROM t1 LIMIT 2) AS b |
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461 | ORDER BY 1, 2 |
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462 | } |
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463 | } {1 1 1 2 2 1 2 2 3 1 3 2 4 1 4 2} |
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464 | do_test select6-9.2 { |
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465 | execsql { |
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466 | SELECT x FROM (SELECT x FROM t1 LIMIT 2); |
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467 | } |
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468 | } {1 2} |
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469 | do_test select6-9.3 { |
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470 | execsql { |
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471 | SELECT x FROM (SELECT x FROM t1 LIMIT 2 OFFSET 1); |
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472 | } |
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473 | } {2 3} |
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474 | do_test select6-9.4 { |
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475 | execsql { |
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476 | SELECT x FROM (SELECT x FROM t1) LIMIT 2; |
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477 | } |
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478 | } {1 2} |
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479 | do_test select6-9.5 { |
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480 | execsql { |
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481 | SELECT x FROM (SELECT x FROM t1) LIMIT 2 OFFSET 1; |
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482 | } |
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483 | } {2 3} |
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484 | do_test select6-9.6 { |
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485 | execsql { |
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486 | SELECT x FROM (SELECT x FROM t1 LIMIT 2) LIMIT 3; |
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487 | } |
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488 | } {1 2} |
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489 | do_test select6-9.7 { |
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490 | execsql { |
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491 | SELECT x FROM (SELECT x FROM t1 LIMIT -1) LIMIT 3; |
||
492 | } |
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493 | } {1 2 3} |
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494 | do_test select6-9.8 { |
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495 | execsql { |
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496 | SELECT x FROM (SELECT x FROM t1 LIMIT -1); |
||
497 | } |
||
498 | } {1 2 3 4} |
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499 | do_test select6-9.9 { |
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500 | execsql { |
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501 | SELECT x FROM (SELECT x FROM t1 LIMIT -1 OFFSET 1); |
||
502 | } |
||
503 | } {2 3 4} |
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504 | do_test select6-9.10 { |
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505 | execsql { |
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506 | SELECT x, y FROM (SELECT x, (SELECT 10+x) y FROM t1 LIMIT -1 OFFSET 1); |
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507 | } |
||
508 | } {2 12 3 13 4 14} |
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509 | do_test select6-9.11 { |
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510 | execsql { |
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511 | SELECT x, y FROM (SELECT x, (SELECT 10)+x y FROM t1 LIMIT -1 OFFSET 1); |
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512 | } |
||
513 | } {2 12 3 13 4 14} |
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514 | |||
515 | |||
516 | |||
517 | finish_test |