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<hr/> |
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<h3><span>Statement:</span> the highest point gap was on january 5 , with a spread of 6 points</h3> |
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<h3>Input Table: 2003 - 04 detroit red wings season</h3> |
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<div class="step"> |
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<div class="step"> |
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<div class="step-title">Step 1: Order the table by 'record' in descending order.</div> |
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<div class="content" id="step-1"> |
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<table> |
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<tr> |
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<td>date</td> |
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<td>visitor</td> |
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<td>score</td> |
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<td>home</td> |
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<td>decision</td> |
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<td>attendance</td> |
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<td>record</td> |
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</tr> |
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<tr> |
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<td><span class="highlighted-cell" style="background-color:yellow;" title="Used in transformation">0002-01-01</span></td> |
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<td><span class="highlighted-cell" style="background-color:yellow;" title="Used in transformation">detroit</span></td> |
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<td><span class="highlighted-cell" style="background-color:yellow;" title="Used in transformation">4 - 1</span></td> |
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<td><span class="highlighted-cell" style="background-color:yellow;" title="Used in transformation">carolina</span></td> |
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<td><span class="highlighted-cell" style="background-color:yellow;" title="Used in transformation">joseph</span></td> |
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<td><span class="highlighted-cell" style="background-color:yellow;" title="Used in transformation">17053</span></td> |
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<td><span class="highlighted-cell" style="background-color:#90EE90;" title="Used in transformation">24 - 12 - 4 - 1</span></td> |
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</tr> |
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<tr> |
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<td><span class="highlighted-cell" style="background-color:yellow;" title="Used in transformation">0001-01-03</span></td> |
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<td><span class="highlighted-cell" style="background-color:yellow;" title="Used in transformation">anaheim</span></td> |
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<td><span class="highlighted-cell" style="background-color:yellow;" title="Used in transformation">1 - 3</span></td> |
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<td><span class="highlighted-cell" style="background-color:yellow;" title="Used in transformation">detroit</span></td> |
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<td><span class="highlighted-cell" style="background-color:yellow;" title="Used in transformation">legace</span></td> |
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<td><span class="highlighted-cell" style="background-color:yellow;" title="Used in transformation">20066</span></td> |
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<td><span class="highlighted-cell" style="background-color:#90EE90;" title="Used in transformation">25 - 12 - 4 - 1</span></td> |
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</tr> |
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<tr> |
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<td><span class="highlighted-cell" style="background-color:yellow;" title="Used in transformation">0000-01-05</span></td> |
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<td><span class="highlighted-cell" style="background-color:yellow;" title="Used in transformation">nashville</span></td> |
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<td><span class="highlighted-cell" style="background-color:yellow;" title="Used in transformation">0 - 6</span></td> |
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<td><span class="highlighted-cell" style="background-color:yellow;" title="Used in transformation">detroit</span></td> |
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<td><span class="highlighted-cell" style="background-color:yellow;" title="Used in transformation">joseph</span></td> |
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<td><span class="highlighted-cell" style="background-color:yellow;" title="Used in transformation">20066</span></td> |
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<td><span class="highlighted-cell" style="background-color:#90EE90;" title="Used in transformation">26 - 12 - 4 - 1</span></td> |
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</tr> |
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<tr> |
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<td><span class="highlighted-cell" style="background-color:yellow;" title="Used in transformation">0001-01-07</span></td> |
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<td><span class="highlighted-cell" style="background-color:yellow;" title="Used in transformation">boston</span></td> |
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<td><span class="highlighted-cell" style="background-color:yellow;" title="Used in transformation">3 - 0</span></td> |
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<td><span class="highlighted-cell" style="background-color:yellow;" title="Used in transformation">detroit</span></td> |
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<td><span class="highlighted-cell" style="background-color:yellow;" title="Used in transformation">joseph</span></td> |
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<td><span class="highlighted-cell" style="background-color:yellow;" title="Used in transformation">20066</span></td> |
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<td><span class="highlighted-cell" style="background-color:#90EE90;" title="Used in transformation">26 - 13 - 4 - 1</span></td> |
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</tr> |
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<tr> |
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<td><span class="highlighted-cell" style="background-color:yellow;" title="Used in transformation">0000-01-10</span></td> |
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<td><span class="highlighted-cell" style="background-color:yellow;" title="Used in transformation">detroit</span></td> |
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<td><span class="highlighted-cell" style="background-color:yellow;" title="Used in transformation">1 - 2</span></td> |
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<td><span class="highlighted-cell" style="background-color:yellow;" title="Used in transformation">boston</span></td> |
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<td><span class="highlighted-cell" style="background-color:yellow;" title="Used in transformation">joseph</span></td> |
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<td><span class="highlighted-cell" style="background-color:yellow;" title="Used in transformation">17565</span></td> |
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<td><span class="highlighted-cell" style="background-color:#90EE90;" title="Used in transformation">26 - 13 - 4 - 2</span></td> |
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</tr> |
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<tr> |
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<td><span class="highlighted-cell" style="background-color:yellow;" title="Used in transformation">9999-01-14</span></td> |
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<td><span class="highlighted-cell" style="background-color:yellow;" title="Used in transformation">chicago</span></td> |
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<td><span class="highlighted-cell" style="background-color:yellow;" title="Used in transformation">2 - 4</span></td> |
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<td><span class="highlighted-cell" style="background-color:yellow;" title="Used in transformation">detroit</span></td> |
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<td><span class="highlighted-cell" style="background-color:yellow;" title="Used in transformation">legace</span></td> |
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<td><span class="highlighted-cell" style="background-color:yellow;" title="Used in transformation">20066</span></td> |
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<td><span class="highlighted-cell" style="background-color:#90EE90;" title="Used in transformation">27 - 13 - 4 - 2</span></td> |
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</tr> |
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<tr> |
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<td><span class="highlighted-cell" style="background-color:yellow;" title="Used in transformation">0000-01-16</span></td> |
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<td><span class="highlighted-cell" style="background-color:yellow;" title="Used in transformation">phoenix</span></td> |
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<td><span class="highlighted-cell" style="background-color:yellow;" title="Used in transformation">3 - 3</span></td> |
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<td><span class="highlighted-cell" style="background-color:yellow;" title="Used in transformation">detroit</span></td> |
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<td><span class="highlighted-cell" style="background-color:yellow;" title="Used in transformation">joseph</span></td> |
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<td><span class="highlighted-cell" style="background-color:yellow;" title="Used in transformation">20066</span></td> |
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<td><span class="highlighted-cell" style="background-color:#90EE90;" title="Used in transformation">27 - 13 - 5 - 2</span></td> |
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</tr> |
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<tr> |
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<td><span class="highlighted-cell" style="background-color:yellow;" title="Used in transformation">9999-01-19</span></td> |
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<td><span class="highlighted-cell" style="background-color:yellow;" title="Used in transformation">detroit</span></td> |
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<td><span class="highlighted-cell" style="background-color:yellow;" title="Used in transformation">1 - 2</span></td> |
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<td><span class="highlighted-cell" style="background-color:yellow;" title="Used in transformation">san jose</span></td> |
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<td><span class="highlighted-cell" style="background-color:yellow;" title="Used in transformation">joseph</span></td> |
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<td><span class="highlighted-cell" style="background-color:yellow;" title="Used in transformation">17361</span></td> |
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<td><span class="highlighted-cell" style="background-color:#90EE90;" title="Used in transformation">27 - 14 - 5 - 2</span></td> |
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</tr> |
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<tr> |
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<td><span class="highlighted-cell" style="background-color:yellow;" title="Used in transformation">9999-01-21</span></td> |
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<td><span class="highlighted-cell" style="background-color:yellow;" title="Used in transformation">detroit</span></td> |
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<td><span class="highlighted-cell" style="background-color:yellow;" title="Used in transformation">2 - 2</span></td> |
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<td><span class="highlighted-cell" style="background-color:yellow;" title="Used in transformation">anaheim</span></td> |
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<td><span class="highlighted-cell" style="background-color:yellow;" title="Used in transformation">legace</span></td> |
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<td><span class="highlighted-cell" style="background-color:yellow;" title="Used in transformation">17174</span></td> |
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<td><span class="highlighted-cell" style="background-color:#90EE90;" title="Used in transformation">27 - 14 - 6 - 2</span></td> |
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</tr> |
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<tr> |
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<td><span class="highlighted-cell" style="background-color:yellow;" title="Used in transformation">9999-01-22</span></td> |
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<td><span class="highlighted-cell" style="background-color:yellow;" title="Used in transformation">detroit</span></td> |
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<td><span class="highlighted-cell" style="background-color:yellow;" title="Used in transformation">5 - 4</span></td> |
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<td><span class="highlighted-cell" style="background-color:yellow;" title="Used in transformation">los angeles</span></td> |
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<td><span class="highlighted-cell" style="background-color:yellow;" title="Used in transformation">joseph</span></td> |
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<td><span class="highlighted-cell" style="background-color:yellow;" title="Used in transformation">18118</span></td> |
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<td><span class="highlighted-cell" style="background-color:#90EE90;" title="Used in transformation">28 - 14 - 6 - 2</span></td> |
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</tr> |
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<tr> |
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<td><span class="highlighted-cell" style="background-color:yellow;" title="Used in transformation">9999-01-24</span></td> |
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<td><span class="highlighted-cell" style="background-color:yellow;" title="Used in transformation">detroit</span></td> |
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<td><span class="highlighted-cell" style="background-color:yellow;" title="Used in transformation">2 - 5</span></td> |
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<td><span class="highlighted-cell" style="background-color:yellow;" title="Used in transformation">phoenix</span></td> |
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<td><span class="highlighted-cell" style="background-color:yellow;" title="Used in transformation">joseph</span></td> |
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<td><span class="highlighted-cell" style="background-color:yellow;" title="Used in transformation">19019</span></td> |
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<td><span class="highlighted-cell" style="background-color:#90EE90;" title="Used in transformation">28 - 15 - 6 - 2</span></td> |
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</tr> |
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<tr> |
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<td><span class="highlighted-cell" style="background-color:yellow;" title="Used in transformation">9999-01-26</span></td> |
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<td><span class="highlighted-cell" style="background-color:yellow;" title="Used in transformation">detroit</span></td> |
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<td><span class="highlighted-cell" style="background-color:yellow;" title="Used in transformation">2 - 2</span></td> |
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<td><span class="highlighted-cell" style="background-color:yellow;" title="Used in transformation">dallas</span></td> |
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<td><span class="highlighted-cell" style="background-color:yellow;" title="Used in transformation">legace</span></td> |
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<td><span class="highlighted-cell" style="background-color:yellow;" title="Used in transformation">18532</span></td> |
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<td><span class="highlighted-cell" style="background-color:#90EE90;" title="Used in transformation">28 - 15 - 7 - 2</span></td> |
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</tr> |
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<tr> |
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<td><span class="highlighted-cell" style="background-color:yellow;" title="Used in transformation">9999-01-29</span></td> |
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<td><span class="highlighted-cell" style="background-color:yellow;" title="Used in transformation">new jersey</span></td> |
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<td><span class="highlighted-cell" style="background-color:yellow;" title="Used in transformation">2 - 5</span></td> |
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<td><span class="highlighted-cell" style="background-color:yellow;" title="Used in transformation">detroit</span></td> |
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<td><span class="highlighted-cell" style="background-color:yellow;" title="Used in transformation">joseph</span></td> |
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<td><span class="highlighted-cell" style="background-color:yellow;" title="Used in transformation">20066</span></td> |
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<td><span class="highlighted-cell" style="background-color:#90EE90;" title="Used in transformation">29 - 15 - 7 - 2</span></td> |
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</tr> |
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<tr> |
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<td><span class="highlighted-cell" style="background-color:yellow;" title="Used in transformation">9999-01-31</span></td> |
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<td><span class="highlighted-cell" style="background-color:yellow;" title="Used in transformation">carolina</span></td> |
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<td><span class="highlighted-cell" style="background-color:yellow;" title="Used in transformation">4 - 4</span></td> |
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<td><span class="highlighted-cell" style="background-color:yellow;" title="Used in transformation">detroit</span></td> |
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<td><span class="highlighted-cell" style="background-color:yellow;" title="Used in transformation">legace</span></td> |
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<td><span class="highlighted-cell" style="background-color:yellow;" title="Used in transformation">20066</span></td> |
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<td><span class="highlighted-cell" style="background-color:#90EE90;" title="Used in transformation">30 - 15 - 8 - 2</span></td> |
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</tr> |
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</table> |
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</div> |
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<hr/> |
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<div class="step"> |
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<div class="step-title">Step 2: Select row number 1.</div> |
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<div class="content" id="step-0"> |
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<table> |
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<tr> |
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<td>date</td> |
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<td>visitor</td> |
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<td>score</td> |
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<td>home</td> |
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<td>decision</td> |
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<td>attendance</td> |
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<td>record</td> |
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</tr> |
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<tr> |
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<td>9999-01-31</td> |
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<td>carolina</td> |
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<td>4 - 4</td> |
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<td>detroit</td> |
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<td>legace</td> |
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<td>20066</td> |
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<td>30 - 15 - 8 - 2</td> |
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</tr> |
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<tr> |
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<td>9999-01-29</td> |
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<td>new jersey</td> |
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<td>2 - 5</td> |
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<td>detroit</td> |
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<td>joseph</td> |
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<td>20066</td> |
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<td>29 - 15 - 7 - 2</td> |
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</tr> |
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<tr> |
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<td>9999-01-26</td> |
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<td>detroit</td> |
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<td>2 - 2</td> |
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<td>dallas</td> |
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<td>legace</td> |
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<td>18532</td> |
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<td>28 - 15 - 7 - 2</td> |
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</tr> |
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<tr> |
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<td>9999-01-24</td> |
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<td>detroit</td> |
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<td>2 - 5</td> |
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<td>phoenix</td> |
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<td>joseph</td> |
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<td>19019</td> |
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<td>28 - 15 - 6 - 2</td> |
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</tr> |
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<tr> |
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<td>9999-01-22</td> |
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<td>detroit</td> |
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<td>5 - 4</td> |
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<td>los angeles</td> |
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<td>joseph</td> |
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<td>18118</td> |
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<td>28 - 14 - 6 - 2</td> |
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</tr> |
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<tr> |
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<td>9999-01-21</td> |
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<td>detroit</td> |
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<td>2 - 2</td> |
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<td>anaheim</td> |
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<td>legace</td> |
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<td>17174</td> |
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<td>27 - 14 - 6 - 2</td> |
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</tr> |
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<tr> |
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<td>9999-01-19</td> |
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<td>detroit</td> |
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<td>1 - 2</td> |
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<td>san jose</td> |
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<td>joseph</td> |
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<td>17361</td> |
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<td>27 - 14 - 5 - 2</td> |
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</tr> |
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<tr> |
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<td>0000-01-16</td> |
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<td>phoenix</td> |
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<td>3 - 3</td> |
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<td>detroit</td> |
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<td>joseph</td> |
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<td>20066</td> |
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<td>27 - 13 - 5 - 2</td> |
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</tr> |
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<tr> |
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<td>9999-01-14</td> |
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<td>chicago</td> |
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<td>2 - 4</td> |
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<td>detroit</td> |
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<td>legace</td> |
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<td>20066</td> |
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<td>27 - 13 - 4 - 2</td> |
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</tr> |
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<tr> |
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<td>0000-01-10</td> |
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<td>detroit</td> |
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<td>1 - 2</td> |
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<td>boston</td> |
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<td>joseph</td> |
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<td>17565</td> |
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<td>26 - 13 - 4 - 2</td> |
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</tr> |
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<tr> |
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<td>0001-01-07</td> |
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<td>boston</td> |
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<td>3 - 0</td> |
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<td>detroit</td> |
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<td>joseph</td> |
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<td>20066</td> |
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<td>26 - 13 - 4 - 1</td> |
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</tr> |
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<tr> |
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<td>0000-01-05</td> |
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<td>nashville</td> |
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<td>0 - 6</td> |
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<td>detroit</td> |
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<td>joseph</td> |
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<td>20066</td> |
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<td>26 - 12 - 4 - 1</td> |
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</tr> |
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<tr> |
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<td>0001-01-03</td> |
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<td>anaheim</td> |
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<td>1 - 3</td> |
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<td>detroit</td> |
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<td>legace</td> |
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<td>20066</td> |
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<td>25 - 12 - 4 - 1</td> |
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</tr> |
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<tr> |
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<td>0002-01-01</td> |
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<td>detroit</td> |
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<td>4 - 1</td> |
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<td>carolina</td> |
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<td>joseph</td> |
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<td>17053</td> |
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<td>24 - 12 - 4 - 1</td> |
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</tr> |
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</table> |
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</div> |
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</div> |
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<hr/> |
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<div class="step"> |
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<div class="step-title">Step 3: Extract the numerical point gap from the 'record' column then add column 'point_gap' to existing table.</div> |
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<div class="content" id="step-1"> |
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<table> |
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<tr> |
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<td>date</td> |
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<td>visitor</td> |
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<td>score</td> |
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<td>home</td> |
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<td>decision</td> |
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<td>attendance</td> |
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<td>record</td> |
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</tr> |
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<tr> |
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<td><span class="highlighted-cell" style="background-color:yellow;" title="Used in transformation">9999-01-31</span></td> |
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<td><span class="highlighted-cell" style="background-color:yellow;" title="Used in transformation">carolina</span></td> |
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<td><span class="highlighted-cell" style="background-color:yellow;" title="Used in transformation">4 - 4</span></td> |
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<td><span class="highlighted-cell" style="background-color:yellow;" title="Used in transformation">detroit</span></td> |
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<td><span class="highlighted-cell" style="background-color:yellow;" title="Used in transformation">legace</span></td> |
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<td><span class="highlighted-cell" style="background-color:yellow;" title="Used in transformation">20066</span></td> |
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<td><span class="highlighted-cell" style="background-color:#90EE90;" title="Used in transformation">30 - 15 - 8 - 2</span></td> |
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</tr> |
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</table> |
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</div> |
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</div> |
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<hr/> |
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<div class="step"> |
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<div class="step-title">Step 4: Select rows where 'point_gap' is 6.</div> |
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<div class="content" id="step-2"> |
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<table> |
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<tr> |
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<td>date</td> |
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<td>visitor</td> |
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<td>score</td> |
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<td>home</td> |
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<td>decision</td> |
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<td>attendance</td> |
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<td>record</td> |
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<td>point_gap</td> |
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</tr> |
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<tr> |
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<td>9999-01-31</td> |
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<td>carolina</td> |
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<td>4 - 4</td> |
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<td>detroit</td> |
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<td>legace</td> |
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<td>20066</td> |
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<td>30 - 15 - 8 - 2</td> |
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<td>15</td> |
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</tr> |
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</table> |
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</div> |
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</div> |
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<hr/> |
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<div class="step"> |
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<div class="step-title">Step 5: Select rows where 'date' is '0000-01-05'.</div> |
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<div class="content" id="step-3"> |
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<table> |
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<tr> |
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<td>date</td> |
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<td>visitor</td> |
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<td>score</td> |
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<td>home</td> |
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<td>decision</td> |
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<td>attendance</td> |
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<td>record</td> |
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<td>point_gap</td> |
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</tr> |
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</table> |
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</div> |
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</div> |
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<hr/> |
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<div class="step"> |
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<div class="step-title">Step 6: Use a `CASE` statement to return TRUE if the number of rows is equal to 1, otherwise return FALSE.</div> |
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<div class="content" id="step-4"> |
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<table> |
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<tr> |
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<td>date</td> |
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<td>visitor</td> |
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<td>score</td> |
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<td>home</td> |
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<td>decision</td> |
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<td>attendance</td> |
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<td>record</td> |
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<td>point_gap</td> |
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</tr> |
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</table> |
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