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1 # 2008 April 1 |
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2 # |
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3 # The author disclaims copyright to this source code. In place of |
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4 # a legal notice, here is a blessing: |
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5 # |
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6 # May you do good and not evil. |
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7 # May you find forgiveness for yourself and forgive others. |
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8 # May you share freely, never taking more than you give. |
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9 # |
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10 #*********************************************************************** |
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11 # |
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12 # Test cases designed to exercise and verify the logic for |
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13 # factoring constant expressions out of loops and for |
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14 # common subexpression eliminations. |
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15 # |
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16 # $Id: cse.test,v 1.6 2008/08/04 03:51:24 danielk1977 Exp $ |
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17 # |
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18 |
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19 set testdir [file dirname $argv0] |
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20 source $testdir/tester.tcl |
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21 |
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22 do_test cse-1.1 { |
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23 execsql { |
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24 CREATE TABLE t1(a INTEGER PRIMARY KEY, b, c, d, e, f); |
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25 INSERT INTO t1 VALUES(1,11,12,13,14,15); |
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26 INSERT INTO t1 VALUES(2,21,22,23,24,25); |
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27 } |
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28 execsql { |
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29 SELECT b, -b, ~b, NOT b, NOT NOT b, b-b, b+b, b*b, b/b, b FROM t1 |
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30 } |
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31 } {11 -11 -12 0 1 0 22 121 1 11 21 -21 -22 0 1 0 42 441 1 21} |
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32 do_test cse-1.2 { |
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33 execsql { |
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34 SELECT b, b%b, b==b, b!=b, b<b, b<=b, b IS NULL, b NOT NULL, b FROM t1 |
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35 } |
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36 } {11 0 1 0 0 1 0 1 11 21 0 1 0 0 1 0 1 21} |
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37 do_test cse-1.3 { |
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38 execsql { |
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39 SELECT b, abs(b), coalesce(b,-b,NOT b,c,NOT c), c, -c FROM t1; |
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40 } |
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41 } {11 11 11 12 -12 21 21 21 22 -22} |
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42 do_test cse-1.4 { |
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43 execsql { |
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44 SELECT CASE WHEN a==1 THEN b ELSE c END, b, c FROM t1 |
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45 } |
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46 } {11 11 12 22 21 22} |
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47 do_test cse-1.5 { |
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48 execsql { |
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49 SELECT CASE a WHEN 1 THEN b WHEN 2 THEN c ELSE d END, b, c, d FROM t1 |
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50 } |
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51 } {11 11 12 13 22 21 22 23} |
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52 do_test cse-1.6.1 { |
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53 execsql { |
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54 SELECT CASE b WHEN 11 THEN -b WHEN 21 THEN -c ELSE -d END, b, c, d FROM t1 |
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55 } |
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56 } {-11 11 12 13 -22 21 22 23} |
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57 do_test cse-1.6.2 { |
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58 execsql { |
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59 SELECT CASE b+1 WHEN c THEN d WHEN e THEN f ELSE 999 END, b, c, d FROM t1 |
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60 } |
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61 } {13 11 12 13 23 21 22 23} |
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62 do_test cse-1.6.3 { |
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63 execsql { |
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64 SELECT CASE WHEN b THEN d WHEN e THEN f ELSE 999 END, b, c, d FROM t1 |
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65 } |
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66 } {13 11 12 13 23 21 22 23} |
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67 do_test cse-1.6.4 { |
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68 execsql { |
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69 SELECT b, c, d, CASE WHEN b THEN d WHEN e THEN f ELSE 999 END FROM t1 |
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70 } |
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71 } {11 12 13 13 21 22 23 23} |
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72 do_test cse-1.6.5 { |
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73 execsql { |
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74 SELECT b, c, d, CASE WHEN 0 THEN d WHEN e THEN f ELSE 999 END FROM t1 |
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75 } |
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76 } {11 12 13 15 21 22 23 25} |
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77 do_test cse-1.7 { |
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78 execsql { |
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79 SELECT a, -a, ~a, NOT a, NOT NOT a, a-a, a+a, a*a, a/a, a FROM t1 |
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80 } |
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81 } {1 -1 -2 0 1 0 2 1 1 1 2 -2 -3 0 1 0 4 4 1 2} |
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82 do_test cse-1.8 { |
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83 execsql { |
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84 SELECT a, a%a, a==a, a!=a, a<a, a<=a, a IS NULL, a NOT NULL, a FROM t1 |
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85 } |
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86 } {1 0 1 0 0 1 0 1 1 2 0 1 0 0 1 0 1 2} |
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87 do_test cse-1.9 { |
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88 execsql { |
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89 SELECT NOT b, ~b, NOT NOT b, b FROM t1 |
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90 } |
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91 } {0 -12 1 11 0 -22 1 21} |
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92 do_test cse-1.10 { |
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93 execsql { |
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94 SELECT CAST(b AS integer), typeof(b), CAST(b AS text), typeof(b) FROM t1 |
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95 } |
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96 } {11 integer 11 integer 21 integer 21 integer} |
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97 ifcapable compound { |
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98 do_test cse-1.11 { |
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99 execsql { |
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100 SELECT *,* FROM t1 WHERE a=2 |
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101 UNION ALL |
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102 SELECT *,* FROM t1 WHERE a=1 |
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103 } |
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104 } {2 21 22 23 24 25 2 21 22 23 24 25 1 11 12 13 14 15 1 11 12 13 14 15} |
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105 do_test cse-1.12 { |
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106 execsql { |
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107 SELECT coalesce(b,c,d,e), a, b, c, d, e FROM t1 WHERE a=2 |
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108 UNION ALL |
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109 SELECT coalesce(e,d,c,b), e, d, c, b, a FROM t1 WHERE a=1 |
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110 } |
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111 } {21 2 21 22 23 24 14 14 13 12 11 1} |
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112 } |
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113 do_test cse-1.13 { |
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114 execsql { |
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115 SELECT upper(b), typeof(b), b FROM t1 |
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116 } |
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117 } {11 integer 11 21 integer 21} |
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118 do_test cse-1.14 { |
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119 execsql { |
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120 SELECT b, typeof(b), upper(b), typeof(b), b FROM t1 |
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121 } |
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122 } {11 integer 11 integer 11 21 integer 21 integer 21} |
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123 |
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124 # Overflow the column cache. Create queries involving more and more |
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125 # columns until the cache overflows. Verify correct operation throughout. |
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126 # |
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127 do_test cse-2.1 { |
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128 execsql { |
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129 CREATE TABLE t2(a0,a1,a2,a3,a4,a5,a6,a7,a8,a9, |
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130 a10,a11,a12,a13,a14,a15,a16,a17,a18,a19, |
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131 a20,a21,a22,a23,a24,a25,a26,a27,a28,a29, |
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132 a30,a31,a32,a33,a34,a35,a36,a37,a38,a39, |
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133 a40,a41,a42,a43,a44,a45,a46,a47,a48,a49); |
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134 INSERT INTO t2 VALUES(0,1,2,3,4,5,6,7,8,9, |
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135 10,11,12,13,14,15,16,17,18,19, |
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136 20,21,22,23,24,25,26,27,28,29, |
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137 30,31,32,33,34,35,36,37,38,39, |
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138 40,41,42,43,44,45,46,47,48,49); |
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139 SELECT * FROM t2; |
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140 } |
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141 } {0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49} |
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142 |
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143 for {set i 1} {$i<100} {incr i} { |
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144 set n [expr {int(rand()*44)+5}] |
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145 set colset {} |
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146 set answer {} |
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147 for {set j 0} {$j<$n} {incr j} { |
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148 set r [expr {$j+int(rand()*5)}] |
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149 if {$r>49} {set r [expr {99-$r}]} |
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150 lappend colset a$j a$r |
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151 lappend answer $j $r |
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152 } |
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153 set sql "SELECT [join $colset ,] FROM t2" |
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154 do_test cse-2.2.$i { |
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155 # explain $::sql |
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156 execsql $::sql |
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157 } $answer |
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158 } |
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159 |
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160 finish_test |