wasCSharpSQLite – Blame information for rev 7
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1 | office | 1 | # 2009 December 9 |
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. |
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12 | # |
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13 | # This file implements tests for N-way joins (N>2) which make |
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14 | # use of USING or NATURAL JOIN. For such joins, the USING and |
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15 | # NATURAL JOIN processing needs to search all tables to the left |
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16 | # of the join looking for a match. See ticket [f74beaabde] |
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17 | # for additional information. |
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18 | # |
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19 | |||
20 | set testdir [file dirname $argv0] |
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21 | source $testdir/tester.tcl |
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22 | |||
23 | |||
24 | # The problem as initially reported on the mailing list: |
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25 | # |
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26 | do_test join6-1.1 { |
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27 | execsql { |
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28 | CREATE TABLE t1(a); |
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29 | CREATE TABLE t2(a); |
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30 | CREATE TABLE t3(a,b); |
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31 | INSERT INTO t1 VALUES(1); |
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32 | INSERT INTO t3 VALUES(1,2); |
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33 | |||
34 | SELECT * FROM t1 LEFT JOIN t2 USING(a) LEFT JOIN t3 USING(a); |
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35 | } |
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36 | } {1 2} |
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37 | do_test join6-1.2 { |
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38 | execsql { |
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39 | SELECT t1.a, t3.b |
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40 | FROM t1 LEFT JOIN t2 ON t1.a=t2.a LEFT JOIN t3 ON t2.a=t3.a; |
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41 | } |
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42 | } {1 {}} |
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43 | do_test join6-1.3 { |
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44 | execsql { |
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45 | SELECT t1.a, t3.b |
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46 | FROM t1 LEFT JOIN t2 ON t1.a=t2.a LEFT JOIN t3 ON t1.a=t3.a; |
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47 | } |
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48 | } {1 2} |
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49 | |||
50 | |||
51 | do_test join6-2.1 { |
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52 | execsql { |
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53 | DROP TABLE t1; |
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54 | DROP TABLE t2; |
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55 | DROP TABLE t3; |
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56 | |||
57 | CREATE TABLE t1(x,y); |
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58 | CREATE TABLE t2(y,z); |
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59 | CREATE TABLE t3(x,z); |
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60 | |||
61 | INSERT INTO t1 VALUES(1,2); |
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62 | INSERT INTO t1 VALUES(3,4); |
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63 | |||
64 | INSERT INTO t2 VALUES(2,3); |
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65 | INSERT INTO t2 VALUES(4,5); |
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66 | |||
67 | INSERT INTO t3 VALUES(1,3); |
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68 | INSERT INTO t3 VALUES(3,5); |
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69 | |||
70 | SELECT * FROM t1 JOIN t2 USING (y) JOIN t3 USING(x); |
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71 | } |
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72 | } {1 2 3 3 3 4 5 5} |
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73 | do_test join6-2.2 { |
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74 | execsql { |
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75 | SELECT * FROM t1 NATURAL JOIN t2 NATURAL JOIN t3; |
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76 | } |
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77 | } {1 2 3 3 4 5} |
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78 | |||
79 | |||
80 | do_test join6-3.1 { |
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81 | execsql { |
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82 | DROP TABLE t1; |
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83 | DROP TABLE t2; |
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84 | DROP TABLE t3; |
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85 | |||
86 | CREATE TABLE t1(a,x,y); |
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87 | INSERT INTO t1 VALUES(1,91,92); |
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88 | INSERT INTO t1 VALUES(2,93,94); |
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89 | |||
90 | CREATE TABLE t2(b,y,z); |
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91 | INSERT INTO t2 VALUES(3,92,93); |
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92 | INSERT INTO t2 VALUES(4,94,95); |
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93 | |||
94 | CREATE TABLE t3(c,x,z); |
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95 | INSERT INTO t3 VALUES(5,91,93); |
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96 | INSERT INTO t3 VALUES(6,99,95); |
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97 | |||
98 | SELECT * FROM t1 NATURAL JOIN t2 NATURAL JOIN t3; |
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99 | } |
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100 | } {1 91 92 3 93 5} |
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101 | do_test join6-3.2 { |
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102 | execsql { |
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103 | SELECT * FROM t1 JOIN t2 NATURAL JOIN t3; |
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104 | } |
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105 | } {1 91 92 3 92 93 5} |
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106 | do_test join6-3.3 { |
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107 | execsql { |
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108 | SELECT * FROM t1 JOIN t2 USING(y) NATURAL JOIN t3; |
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109 | } |
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110 | } {1 91 92 3 93 5} |
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111 | do_test join6-3.4 { |
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112 | execsql { |
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113 | SELECT * FROM t1 NATURAL JOIN t2 JOIN t3 USING(x,z); |
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114 | } |
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115 | } {1 91 92 3 93 5} |
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116 | do_test join6-3.5 { |
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117 | execsql { |
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118 | SELECT * FROM t1 NATURAL JOIN t2 JOIN t3 USING(x); |
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119 | } |
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120 | } {1 91 92 3 93 5 93} |
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121 | do_test join6-3.6 { |
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122 | execsql { |
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123 | SELECT * FROM t1 NATURAL JOIN t2 JOIN t3 USING(z); |
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124 | } |
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125 | } {1 91 92 3 93 5 91 2 93 94 4 95 6 99} |
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126 | |||
127 | do_test join6-4.1 { |
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128 | execsql { |
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129 | SELECT * FROM |
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130 | (SELECT 1 AS a, 91 AS x, 92 AS y UNION SELECT 2, 93, 94) |
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131 | NATURAL JOIN t2 NATURAL JOIN t3 |
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132 | } |
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133 | } {1 91 92 3 93 5} |
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134 | do_test join6-4.2 { |
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135 | execsql { |
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136 | SELECT * FROM t1 NATURAL JOIN |
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137 | (SELECT 3 AS b, 92 AS y, 93 AS z UNION SELECT 4, 94, 95) |
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138 | NATURAL JOIN t3 |
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139 | } |
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140 | } {1 91 92 3 93 5} |
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141 | do_test join6-4.3 { |
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142 | execsql { |
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143 | SELECT * FROM t1 NATURAL JOIN t2 NATURAL JOIN |
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144 | (SELECT 5 AS c, 91 AS x, 93 AS z UNION SELECT 6, 99, 95) |
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145 | } |
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146 | } {1 91 92 3 93 5} |
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147 | |||
148 | |||
149 | |||
150 | |||
151 | |||
152 | |||
153 | |||
154 | |||
155 | |||
156 | |||
157 | |||
158 | finish_test |