| Commit | Line | Data |
|---|
| 37f2cc3f |
1 | =head1 NAME |
| 2 | |
| 3 | SQL::Abstract::Manual::Specification |
| 4 | |
| 5 | =head1 DESCRIPTION |
| 6 | |
| 7 | These are the examples for the AST |
| 8 | |
| 9 | =head1 EXAMPLES |
| 10 | |
| 11 | The following are example SQL statements and the AST that would represent each |
| 12 | one. The SQL used is from the MySQL dialect. |
| 13 | |
| 14 | =over 4 |
| 15 | |
| 16 | =item * SELECT 1 |
| 17 | |
| 18 | { |
| 19 | type => 'select', |
| 20 | ast_version => 0.0001, |
| 21 | select => [ |
| 22 | { |
| 23 | type => 'SelectComponent', |
| 24 | value => { |
| 25 | type => 'Value', |
| 26 | subtype => 'number', |
| 27 | value => 1, |
| 28 | }, |
| 29 | }, |
| 30 | ], |
| 31 | } |
| 32 | |
| 33 | =item * SELECT NOW() AS time FROM dual AS duality |
| 34 | |
| 35 | { |
| 36 | type => 'select', |
| 37 | ast_version => 0.0001, |
| 38 | select => [ |
| 39 | { |
| 40 | type => 'SelectComponent', |
| 41 | value => { |
| 42 | type => 'Function', |
| 43 | function => 'NOW', |
| 44 | }, |
| 45 | as => { |
| 46 | type => 'Identifier', |
| 47 | element1 => 'time', |
| 48 | }, |
| 49 | }, |
| 50 | ], |
| 51 | tables => { |
| 52 | type => 'TableIdentifier', |
| 53 | value => { |
| 54 | type => 'Identifier', |
| 55 | element1 => 'dual', |
| 56 | }, |
| 57 | as => 'duality', |
| 58 | }, |
| 59 | } |
| 60 | |
| 61 | =item * SELECT 1 FROM foo LEFT OUTER JOIN bar ON ( foo.col1 = bar.col2 ) |
| 62 | |
| 63 | { |
| 64 | type => 'select', |
| 65 | ast_version => 0.0001, |
| 66 | select => [ |
| 67 | { |
| 68 | type => 'SelectComponent', |
| 69 | value => { |
| 70 | type => 'Value', |
| 71 | subtype => 'number', |
| 72 | value => 1, |
| 73 | }, |
| 74 | }, |
| 75 | ], |
| 76 | tables => { |
| 77 | type => 'Operator', |
| 78 | op => 'LEFT OUTER', |
| 79 | args => [ |
| 80 | { |
| 81 | type => 'TableIdentifier', |
| 82 | value => { |
| 83 | type => 'Identifier', |
| 84 | element1 => 'foo', |
| 85 | }, |
| 86 | }, |
| 87 | { |
| 88 | type => 'TableIdentifier', |
| 89 | value => { |
| 90 | type => 'Identifier', |
| 91 | element1 => 'bar', |
| 92 | }, |
| 93 | }, |
| 94 | ], |
| 95 | on => { |
| 96 | type => 'Operator', |
| 97 | op => '=', |
| 98 | args => [ |
| 99 | { |
| 100 | type => 'Identifier', |
| 101 | element1 => 'foo', |
| 102 | element2 => 'col1', |
| 103 | }, |
| 104 | { |
| 105 | type => 'Identifier', |
| 106 | element1 => 'bar', |
| 107 | element2 => 'col2', |
| 108 | }, |
| 109 | ], |
| 110 | }, |
| 111 | }, |
| 112 | } |
| 113 | |
| 9c604aeb |
114 | =item SELECT * FROM foo WHERE name = 'John' |
| 115 | |
| 116 | { |
| 117 | type => 'select', |
| 118 | ast_version => 0.0001, |
| 119 | select => [ |
| 120 | { |
| 121 | type => 'SelectComponent', |
| 122 | value => { |
| 4f6e8987 |
123 | type => 'Identifier', |
| 124 | element1 => '*', |
| 9c604aeb |
125 | }, |
| 126 | }, |
| 127 | ], |
| 128 | tables => { |
| 129 | type => 'TableIdentifier', |
| 130 | value => { |
| 131 | type => 'Identifier', |
| 132 | element1 => 'foo', |
| 133 | }, |
| 134 | }, |
| 135 | where => { |
| 136 | type => 'Operator', |
| 137 | op => '=', |
| 138 | args => [ |
| 139 | { |
| 140 | type => 'Identifier', |
| 141 | element1 => 'name', |
| 142 | }, |
| 143 | { |
| 144 | type => 'Value', |
| 145 | subtype => 'String', |
| 146 | element1 => 'John', |
| 147 | }, |
| 148 | ], |
| 4f6e8987 |
149 | }, |
| 9c604aeb |
150 | } |
| 151 | |
| 4f6e8987 |
152 | =item SELECT COUNT(*) FROM foo WHERE name = 'John' AND ( title = 'Mr' OR abbrev = 'Dr' ) |
| 153 | |
| 154 | { |
| 155 | type => 'select', |
| 156 | ast_version => 0.0001, |
| 157 | select => [ |
| 158 | { |
| 159 | type => 'SelectComponent', |
| 160 | value => { |
| 161 | type => 'Identifier', |
| 162 | element1 => '*', |
| 163 | }, |
| 164 | }, |
| 165 | ], |
| 166 | tables => { |
| 167 | type => 'TableIdentifier', |
| 168 | value => { |
| 169 | type => 'Identifier', |
| 170 | element1 => 'foo', |
| 171 | }, |
| 172 | }, |
| 173 | where => { |
| 174 | type => 'Operator', |
| 175 | op => 'AND', |
| 176 | args => [ |
| 177 | { |
| 178 | type => 'Operator', |
| 179 | op => '=', |
| 180 | args => [ |
| 181 | { |
| 182 | type => 'Identifier', |
| 183 | element1 => 'name', |
| 184 | }, |
| 185 | { |
| 186 | type => 'Value', |
| 187 | subtype => 'String', |
| 188 | element1 => 'John', |
| 189 | }, |
| 190 | ], |
| 191 | }, |
| 192 | { |
| 193 | type => 'Nesting', |
| 194 | args => [ |
| 195 | { |
| 196 | type => 'Operator', |
| 197 | op => 'OR', |
| 198 | args => [ |
| 199 | { |
| 200 | type => 'Operator', |
| 201 | op => '=', |
| 202 | args => [ |
| 203 | { |
| 204 | type => 'Identifier', |
| 205 | element1 => 'title', |
| 206 | }, |
| 207 | { |
| 208 | type => 'Value', |
| 209 | subtype => 'String', |
| 210 | element1 => 'Mr', |
| 211 | }, |
| 212 | ], |
| 213 | }, |
| 214 | { |
| 215 | type => 'Operator', |
| 216 | op => '=', |
| 217 | args => [ |
| 218 | { |
| 219 | type => 'Identifier', |
| 220 | element1 => 'abbrev', |
| 221 | }, |
| 222 | { |
| 223 | type => 'Value', |
| 224 | subtype => 'String', |
| 225 | element1 => 'Dr', |
| 226 | }, |
| 227 | ], |
| 228 | }, |
| 229 | ], |
| 230 | }, |
| 231 | ], |
| 232 | }, |
| 233 | ], |
| 234 | }, |
| 235 | } |
| 236 | |
| 37f2cc3f |
237 | =back |
| 238 | |
| 239 | =head1 AUTHORS |
| 240 | |
| 241 | robkinyon: Rob Kinyon C<< <rkinyon@cpan.org> >> |
| 242 | |
| 243 | =head1 LICENSE |
| 244 | |
| 245 | You may distribute this code under the same terms as Perl itself. |
| 246 | |
| 247 | =cut |
projects / dbsrgits/SQL-Abstract-2.0-ish.git / blame