wasCSharpSQLite – Blame information for rev 7
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1 | office | 1 | # 2009 February 24 |
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 count(*)" statements. |
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13 | # |
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14 | # $Id: count.test,v 1.6 2009/06/05 17:09:12 drh Exp $ |
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15 | |||
16 | set testdir [file dirname $argv0] |
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17 | source $testdir/tester.tcl |
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18 | |||
19 | # Test plan: |
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20 | # |
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21 | # count-0.*: Make sure count(*) works on an empty database. (Ticket #3774) |
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22 | # |
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23 | # count-1.*: Test that the OP_Count instruction appears to work on both |
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24 | # tables and indexes. Test both when they contain 0 entries, |
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25 | # when all entries are on the root page, and when the b-tree |
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26 | # forms a structure 2 and 3 levels deep. |
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27 | # |
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28 | # count-2.*: Test that |
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29 | # |
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30 | # |
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31 | |||
32 | do_test count-0.1 { |
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33 | db eval { |
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34 | SELECT count(*) FROM sqlite_master; |
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35 | } |
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36 | } {0} |
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37 | |||
38 | set iTest 0 |
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39 | foreach zIndex [list { |
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40 | /* no-op */ |
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41 | } { |
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42 | CREATE INDEX i1 ON t1(a); |
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43 | }] { |
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44 | incr iTest |
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45 | do_test count-1.$iTest.1 { |
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46 | execsql { |
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47 | DROP TABLE IF EXISTS t1; |
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48 | CREATE TABLE t1(a, b); |
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49 | } |
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50 | execsql $zIndex |
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51 | execsql { SELECT count(*) FROM t1 } |
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52 | } {0} |
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53 | |||
54 | do_test count-1.$iTest.2 { |
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55 | execsql { |
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56 | INSERT INTO t1 VALUES(1, 2); |
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57 | INSERT INTO t1 VALUES(3, 4); |
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58 | SELECT count(*) FROM t1; |
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59 | } |
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60 | } {2} |
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61 | |||
62 | do_test count-1.$iTest.3 { |
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63 | execsql { |
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64 | INSERT INTO t1 SELECT * FROM t1; -- 4 |
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65 | INSERT INTO t1 SELECT * FROM t1; -- 8 |
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66 | INSERT INTO t1 SELECT * FROM t1; -- 16 |
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67 | INSERT INTO t1 SELECT * FROM t1; -- 32 |
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68 | INSERT INTO t1 SELECT * FROM t1; -- 64 |
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69 | INSERT INTO t1 SELECT * FROM t1; -- 128 |
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70 | INSERT INTO t1 SELECT * FROM t1; -- 256 |
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71 | SELECT count(*) FROM t1; |
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72 | } |
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73 | } {256} |
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74 | |||
75 | do_test count-1.$iTest.4 { |
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76 | execsql { |
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77 | INSERT INTO t1 SELECT * FROM t1; -- 512 |
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78 | INSERT INTO t1 SELECT * FROM t1; -- 1024 |
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79 | INSERT INTO t1 SELECT * FROM t1; -- 2048 |
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80 | INSERT INTO t1 SELECT * FROM t1; -- 4096 |
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81 | SELECT count(*) FROM t1; |
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82 | } |
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83 | } {4096} |
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84 | |||
85 | do_test count-1.$iTest.5 { |
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86 | execsql { |
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87 | BEGIN; |
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88 | INSERT INTO t1 SELECT * FROM t1; -- 8192 |
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89 | INSERT INTO t1 SELECT * FROM t1; -- 16384 |
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90 | INSERT INTO t1 SELECT * FROM t1; -- 32768 |
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91 | INSERT INTO t1 SELECT * FROM t1; -- 65536 |
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92 | COMMIT; |
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93 | SELECT count(*) FROM t1; |
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94 | } |
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95 | } {65536} |
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96 | } |
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97 | |||
98 | proc uses_op_count {sql} { |
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99 | if {[lsearch [execsql "EXPLAIN $sql"] Count]>=0} { |
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100 | return 1; |
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101 | } |
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102 | return 0 |
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103 | } |
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104 | |||
105 | do_test count-2.1 { |
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106 | execsql { |
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107 | CREATE TABLE t2(a, b); |
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108 | } |
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109 | uses_op_count {SELECT count(*) FROM t2} |
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110 | } {1} |
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111 | do_test count-2.2 { |
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112 | catchsql {SELECT count(DISTINCT *) FROM t2} |
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113 | } {1 {near "*": syntax error}} |
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114 | do_test count-2.3 { |
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115 | uses_op_count {SELECT count(DISTINCT a) FROM t2} |
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116 | } {0} |
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117 | do_test count-2.4 { |
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118 | uses_op_count {SELECT count(a) FROM t2} |
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119 | } {0} |
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120 | do_test count-2.5 { |
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121 | uses_op_count {SELECT count() FROM t2} |
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122 | } {1} |
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123 | do_test count-2.6 { |
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124 | catchsql {SELECT count(DISTINCT) FROM t2} |
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125 | } {1 {DISTINCT aggregates must have exactly one argument}} |
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126 | do_test count-2.7 { |
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127 | uses_op_count {SELECT count(*)+1 FROM t2} |
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128 | } {0} |
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129 | do_test count-2.8 { |
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130 | uses_op_count {SELECT count(*) FROM t2 WHERE a IS NOT NULL} |
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131 | } {0} |
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132 | do_test count-2.9 { |
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133 | catchsql {SELECT count(*) FROM t2 HAVING count(*)>1} |
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134 | } {1 {a GROUP BY clause is required before HAVING}} |
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135 | do_test count-2.10 { |
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136 | uses_op_count {SELECT count(*) FROM (SELECT 1)} |
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137 | } {0} |
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138 | do_test count-2.11 { |
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139 | execsql { CREATE VIEW v1 AS SELECT 1 AS a } |
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140 | uses_op_count {SELECT count(*) FROM v1} |
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141 | } {0} |
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142 | do_test count-2.12 { |
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143 | uses_op_count {SELECT count(*), max(a) FROM t2} |
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144 | } {0} |
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145 | do_test count-2.13 { |
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146 | uses_op_count {SELECT count(*) FROM t1, t2} |
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147 | } {0} |
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148 | |||
149 | ifcapable vtab { |
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150 | register_echo_module [sqlite3_connection_pointer db] |
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151 | do_test count-2.14 { |
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152 | execsql { CREATE VIRTUAL TABLE techo USING echo(t1); } |
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153 | uses_op_count {SELECT count(*) FROM techo} |
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154 | } {0} |
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155 | } |
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156 | |||
157 | do_test count-3.1 { |
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158 | execsql { |
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159 | CREATE TABLE t3(a, b); |
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160 | SELECT a FROM (SELECT count(*) AS a FROM t3) WHERE a==0; |
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161 | } |
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162 | } {0} |
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163 | do_test count-3.2 { |
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164 | execsql { |
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165 | SELECT a FROM (SELECT count(*) AS a FROM t3) WHERE a==1; |
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166 | } |
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167 | } {} |
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168 | |||
169 | do_test count-4.1 { |
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170 | execsql { |
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171 | CREATE TABLE t4(a, b); |
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172 | INSERT INTO t4 VALUES('a', 'b'); |
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173 | CREATE INDEX t4i1 ON t4(b, a); |
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174 | SELECT count(*) FROM t4; |
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175 | } |
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176 | } {1} |
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177 | do_test count-4.2 { |
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178 | execsql { |
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179 | CREATE INDEX t4i2 ON t4(b); |
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180 | SELECT count(*) FROM t4; |
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181 | } |
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182 | } {1} |
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183 | do_test count-4.3 { |
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184 | execsql { |
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185 | DROP INDEX t4i1; |
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186 | CREATE INDEX t4i1 ON t4(b, a); |
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187 | SELECT count(*) FROM t4; |
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188 | } |
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189 | } {1} |
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190 | |||
191 | |||
192 | finish_test |