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| <h3><span>Statement:</span> at 459 feet , the schiesinger building is the fourth largest building in johannesburg</h3> | |
| <h3>Input Table: list of tallest buildings in africa</h3> | |
| <div class="step"> | |
| <div class="step"> | |
| <div class="step-title">Step 1: Order the table by 'feet' in descending order.</div> | |
| <div class="content" id="step-1"> | |
| <table> | |
| <tr> | |
| <td>name</td> | |
| <td>city</td> | |
| <td>years_as_tallest</td> | |
| <td>metres</td> | |
| <td>feet</td> | |
| <td>floors</td> | |
| </tr> | |
| <tr> | |
| <td><span class="highlighted-cell" style="background-color:yellow;" title="Used in transformation">carlton centre</span></td> | |
| <td><span class="highlighted-cell" style="background-color:yellow;" title="Used in transformation">johannesburg</span></td> | |
| <td><span class="highlighted-cell" style="background-color:yellow;" title="Used in transformation">1973-01-01 - present</span></td> | |
| <td><span class="highlighted-cell" style="background-color:yellow;" title="Used in transformation">223.0</span></td> | |
| <td><span class="highlighted-cell" style="background-color:#90EE90;" title="Used in transformation">732</span></td> | |
| <td><span class="highlighted-cell" style="background-color:yellow;" title="Used in transformation">50</span></td> | |
| </tr> | |
| <tr> | |
| <td><span class="highlighted-cell" style="background-color:yellow;" title="Used in transformation">kwadukuza egoli hotel tower 1 , trust bank building</span></td> | |
| <td><span class="highlighted-cell" style="background-color:yellow;" title="Used in transformation">johannesburg</span></td> | |
| <td><span class="highlighted-cell" style="background-color:yellow;" title="Used in transformation">1970-01-01 - 1973-01-01</span></td> | |
| <td><span class="highlighted-cell" style="background-color:yellow;" title="Used in transformation">140.0</span></td> | |
| <td><span class="highlighted-cell" style="background-color:#90EE90;" title="Used in transformation">459</span></td> | |
| <td><span class="highlighted-cell" style="background-color:yellow;" title="Used in transformation">31</span></td> | |
| </tr> | |
| <tr> | |
| <td><span class="highlighted-cell" style="background-color:yellow;" title="Used in transformation">standard bank building</span></td> | |
| <td><span class="highlighted-cell" style="background-color:yellow;" title="Used in transformation">johannesburg</span></td> | |
| <td><span class="highlighted-cell" style="background-color:yellow;" title="Used in transformation">1968-01-01 - 1970-01-01</span></td> | |
| <td><span class="highlighted-cell" style="background-color:yellow;" title="Used in transformation">138.8</span></td> | |
| <td><span class="highlighted-cell" style="background-color:#90EE90;" title="Used in transformation">455</span></td> | |
| <td><span class="highlighted-cell" style="background-color:yellow;" title="Used in transformation">34</span></td> | |
| </tr> | |
| <tr> | |
| <td><span class="highlighted-cell" style="background-color:yellow;" title="Used in transformation">schlesinger building</span></td> | |
| <td><span class="highlighted-cell" style="background-color:yellow;" title="Used in transformation">johannesburg</span></td> | |
| <td><span class="highlighted-cell" style="background-color:yellow;" title="Used in transformation">9999-01-01</span></td> | |
| <td><span class="highlighted-cell" style="background-color:yellow;" title="Used in transformation">110.0</span></td> | |
| <td><span class="highlighted-cell" style="background-color:#90EE90;" title="Used in transformation">361</span></td> | |
| <td><span class="highlighted-cell" style="background-color:yellow;" title="Used in transformation">21</span></td> | |
| </tr> | |
| <tr> | |
| <td><span class="highlighted-cell" style="background-color:yellow;" title="Used in transformation">naspers centre</span></td> | |
| <td><span class="highlighted-cell" style="background-color:yellow;" title="Used in transformation">cape town</span></td> | |
| <td><span class="highlighted-cell" style="background-color:yellow;" title="Used in transformation">9999-01-01</span></td> | |
| <td><span class="highlighted-cell" style="background-color:yellow;" title="Used in transformation">93.0</span></td> | |
| <td><span class="highlighted-cell" style="background-color:#90EE90;" title="Used in transformation">205</span></td> | |
| <td><span class="highlighted-cell" style="background-color:yellow;" title="Used in transformation">22</span></td> | |
| </tr> | |
| <tr> | |
| <td><span class="highlighted-cell" style="background-color:yellow;" title="Used in transformation">mutual heights building</span></td> | |
| <td><span class="highlighted-cell" style="background-color:yellow;" title="Used in transformation">cape town</span></td> | |
| <td><span class="highlighted-cell" style="background-color:yellow;" title="Used in transformation">1940-01-01 - 1962-01-01</span></td> | |
| <td><span class="highlighted-cell" style="background-color:yellow;" title="Used in transformation">91.0</span></td> | |
| <td><span class="highlighted-cell" style="background-color:#90EE90;" title="Used in transformation">298</span></td> | |
| <td><span class="highlighted-cell" style="background-color:yellow;" title="Used in transformation">18</span></td> | |
| </tr> | |
| <tr> | |
| <td><span class="highlighted-cell" style="background-color:yellow;" title="Used in transformation">chamber of mines building</span></td> | |
| <td><span class="highlighted-cell" style="background-color:yellow;" title="Used in transformation">johannesburg</span></td> | |
| <td><span class="highlighted-cell" style="background-color:yellow;" title="Used in transformation">1936-01-01 - 1940-01-01</span></td> | |
| <td><span class="highlighted-cell" style="background-color:yellow;" title="Used in transformation">80.0</span></td> | |
| <td><span class="highlighted-cell" style="background-color:#90EE90;" title="Used in transformation">262</span></td> | |
| <td><span class="highlighted-cell" style="background-color:yellow;" title="Used in transformation">18</span></td> | |
| </tr> | |
| <tr> | |
| <td><span class="highlighted-cell" style="background-color:yellow;" title="Used in transformation">union buildings</span></td> | |
| <td><span class="highlighted-cell" style="background-color:yellow;" title="Used in transformation">pretoria</span></td> | |
| <td><span class="highlighted-cell" style="background-color:yellow;" title="Used in transformation">1913-01-01 - 1936-01-01</span></td> | |
| <td><span class="highlighted-cell" style="background-color:yellow;" title="Used in transformation">60.0</span></td> | |
| <td><span class="highlighted-cell" style="background-color:#90EE90;" title="Used in transformation">196</span></td> | |
| <td><span class="highlighted-cell" style="background-color:yellow;" title="Used in transformation">10</span></td> | |
| </tr> | |
| </table> | |
| </div> | |
| <hr/> | |
| <div class="step"> | |
| <div class="step-title">Step 2: Select row number 4.</div> | |
| <div class="content" id="step-0"> | |
| <table> | |
| <tr> | |
| <td>name</td> | |
| <td>city</td> | |
| <td>years_as_tallest</td> | |
| <td>metres</td> | |
| <td>feet</td> | |
| <td>floors</td> | |
| </tr> | |
| <tr> | |
| <td>carlton centre</td> | |
| <td>johannesburg</td> | |
| <td>1973-01-01 - present</td> | |
| <td>223.0</td> | |
| <td>732</td> | |
| <td>50</td> | |
| </tr> | |
| <tr> | |
| <td>kwadukuza egoli hotel tower 1 , trust bank building</td> | |
| <td>johannesburg</td> | |
| <td>1970-01-01 - 1973-01-01</td> | |
| <td>140.0</td> | |
| <td>459</td> | |
| <td>31</td> | |
| </tr> | |
| <tr> | |
| <td>standard bank building</td> | |
| <td>johannesburg</td> | |
| <td>1968-01-01 - 1970-01-01</td> | |
| <td>138.8</td> | |
| <td>455</td> | |
| <td>34</td> | |
| </tr> | |
| <tr> | |
| <td>schlesinger building</td> | |
| <td>johannesburg</td> | |
| <td>9999-01-01</td> | |
| <td>110.0</td> | |
| <td>361</td> | |
| <td>21</td> | |
| </tr> | |
| <tr> | |
| <td>mutual heights building</td> | |
| <td>cape town</td> | |
| <td>1940-01-01 - 1962-01-01</td> | |
| <td>91.0</td> | |
| <td>298</td> | |
| <td>18</td> | |
| </tr> | |
| <tr> | |
| <td>chamber of mines building</td> | |
| <td>johannesburg</td> | |
| <td>1936-01-01 - 1940-01-01</td> | |
| <td>80.0</td> | |
| <td>262</td> | |
| <td>18</td> | |
| </tr> | |
| <tr> | |
| <td>naspers centre</td> | |
| <td>cape town</td> | |
| <td>9999-01-01</td> | |
| <td>93.0</td> | |
| <td>205</td> | |
| <td>22</td> | |
| </tr> | |
| <tr> | |
| <td>union buildings</td> | |
| <td>pretoria</td> | |
| <td>1913-01-01 - 1936-01-01</td> | |
| <td>60.0</td> | |
| <td>196</td> | |
| <td>10</td> | |
| </tr> | |
| </table> | |
| </div> | |
| </div> | |
| <hr/> | |
| <div class="step"> | |
| <div class="step-title">Step 3: Select rows where 'name' is 'schlesinger building' and 'city' is 'johannesburg'.</div> | |
| <div class="content" id="step-1"> | |
| <table> | |
| <tr> | |
| <td>name</td> | |
| <td>city</td> | |
| <td>years_as_tallest</td> | |
| <td>metres</td> | |
| <td>feet</td> | |
| <td>floors</td> | |
| </tr> | |
| <tr> | |
| <td><span class="highlighted-cell" style="background-color:#90EE90;" title="Used in transformation">schlesinger building</span></td> | |
| <td><span class="highlighted-cell" style="background-color:#90EE90;" title="Used in transformation">johannesburg</span></td> | |
| <td><span class="highlighted-cell" style="background-color:yellow;" title="Used in transformation">9999-01-01</span></td> | |
| <td><span class="highlighted-cell" style="background-color:yellow;" title="Used in transformation">110.0</span></td> | |
| <td><span class="highlighted-cell" style="background-color:yellow;" title="Used in transformation">361</span></td> | |
| <td><span class="highlighted-cell" style="background-color:yellow;" title="Used in transformation">21</span></td> | |
| </tr> | |
| </table> | |
| </div> | |
| </div> | |
| <hr/> | |
| <div class="step"> | |
| <div class="step-title">Step 4: Use a `CASE` statement to return TRUE if the number of rows is equal to 1, otherwise return FALSE.</div> | |
| <div class="content" id="step-2"> | |
| <table> | |
| <tr> | |
| <td>name</td> | |
| <td>city</td> | |
| <td>years_as_tallest</td> | |
| <td>metres</td> | |
| <td>feet</td> | |
| <td>floors</td> | |
| </tr> | |
| <tr> | |
| <td><span class="highlighted-cell" style="background-color:#90EE90;" title="Used in transformation">schlesinger building</span></td> | |
| <td><span class="highlighted-cell" style="background-color:#90EE90;" title="Used in transformation">johannesburg</span></td> | |
| <td><span class="highlighted-cell" style="background-color:#90EE90;" title="Used in transformation">9999-01-01</span></td> | |
| <td><span class="highlighted-cell" style="background-color:#90EE90;" title="Used in transformation">110.0</span></td> | |
| <td><span class="highlighted-cell" style="background-color:#90EE90;" title="Used in transformation">361</span></td> | |
| <td><span class="highlighted-cell" style="background-color:#90EE90;" title="Used in transformation">21</span></td> | |
| </tr> | |
| </table> | |
| </div> | |
| </div> | |
| <hr/> | |
| </div> | |
| </div> | |
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