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<hr>
<h3><span>Statement:</span> four of the competitions out of ten were world wide championships</h3>
<h3>Input Table: lukáš melich</h3>
<div class="step">
<div class="step">
<div class="step-title">Step 1: Select rows where the 'competition' contains the word "world championships".</div>
<div id="step-1" class="content">
<table>
<tr>
<td>year</td>
<td>competition</td>
<td>venue</td>
<td>position</td>
<td>notes</td>
</tr>
<tr>
<td>1998-01-01</td>
<td><span class="highlighted-cell" title="Used in transformation" style="background-color:yellow;">world junior championships</span></td>
<td>annecy , france</td>
<td>10th</td>
<td>61.51 m</td>
</tr>
<tr>
<td>1999-01-01</td>
<td><span class="highlighted-cell" title="Used in transformation" style="background-color:yellow;">european junior championships</span></td>
<td>riga , latvia</td>
<td>5th</td>
<td>64.20 m</td>
</tr>
<tr>
<td>2001-01-01</td>
<td><span class="highlighted-cell" title="Used in transformation" style="background-color:yellow;">european u23 championships</span></td>
<td>amsterdam , netherlands</td>
<td>11th</td>
<td>66.41 m</td>
</tr>
<tr>
<td>2003-01-01</td>
<td><span class="highlighted-cell" title="Used in transformation" style="background-color:yellow;">universiade</span></td>
<td>daegu , south korea</td>
<td>4th</td>
<td>71.26 m</td>
</tr>
<tr>
<td><span class="highlighted-cell" title="Used in transformation" style="background-color:yellow;">2005-01-01</span></td>
<td><span class="highlighted-cell" title="Used in transformation" style="background-color:#90EE90;">world championships</span></td>
<td><span class="highlighted-cell" title="Used in transformation" style="background-color:yellow;">helsinki , finland</span></td>
<td><span class="highlighted-cell" title="Used in transformation" style="background-color:yellow;">14th</span></td>
<td><span class="highlighted-cell" title="Used in transformation" style="background-color:yellow;">74.53 m</span></td>
</tr>
<tr>
<td>2006-01-01</td>
<td><span class="highlighted-cell" title="Used in transformation" style="background-color:yellow;">european championships</span></td>
<td>gothenburg , sweden</td>
<td>15th</td>
<td>73.77 m</td>
</tr>
<tr>
<td>2008-01-01</td>
<td><span class="highlighted-cell" title="Used in transformation" style="background-color:yellow;">olympic games</span></td>
<td>beijing , pr china</td>
<td>29th</td>
<td>70.56 m</td>
</tr>
<tr>
<td><span class="highlighted-cell" title="Used in transformation" style="background-color:yellow;">2009-01-01</span></td>
<td><span class="highlighted-cell" title="Used in transformation" style="background-color:#90EE90;">world championships</span></td>
<td><span class="highlighted-cell" title="Used in transformation" style="background-color:yellow;">berlin , germany</span></td>
<td><span class="highlighted-cell" title="Used in transformation" style="background-color:yellow;">14th</span></td>
<td><span class="highlighted-cell" title="Used in transformation" style="background-color:yellow;">74.47 m</span></td>
</tr>
<tr>
<td>2012-01-01</td>
<td><span class="highlighted-cell" title="Used in transformation" style="background-color:yellow;">olympic games</span></td>
<td>london , great britain</td>
<td>6th</td>
<td>77.17 m</td>
</tr>
<tr>
<td><span class="highlighted-cell" title="Used in transformation" style="background-color:yellow;">2013-01-01</span></td>
<td><span class="highlighted-cell" title="Used in transformation" style="background-color:#90EE90;">world championships</span></td>
<td><span class="highlighted-cell" title="Used in transformation" style="background-color:yellow;">moscow , russia</span></td>
<td><span class="highlighted-cell" title="Used in transformation" style="background-color:yellow;">3rd</span></td>
<td><span class="highlighted-cell" title="Used in transformation" style="background-color:yellow;">79.36 m</span></td>
</tr>
</table>
</div>
<hr>
<div class="step">
<div class="step-title">Step 2: Use a `CASE` statement to return TRUE if the number of rows is equal to 4, otherwise return FALSE.</div>
<div id="step-0" class="content">
<table>
<tr>
<td>year</td>
<td>competition</td>
<td>venue</td>
<td>position</td>
<td>notes</td>
</tr>
<tr>
<td><span class="highlighted-cell" title="Used in transformation" style="background-color:#90EE90;">2005-01-01</span></td>
<td><span class="highlighted-cell" title="Used in transformation" style="background-color:#90EE90;">world championships</span></td>
<td><span class="highlighted-cell" title="Used in transformation" style="background-color:#90EE90;">helsinki , finland</span></td>
<td><span class="highlighted-cell" title="Used in transformation" style="background-color:#90EE90;">14th</span></td>
<td><span class="highlighted-cell" title="Used in transformation" style="background-color:#90EE90;">74.53 m</span></td>
</tr>
<tr>
<td><span class="highlighted-cell" title="Used in transformation" style="background-color:#90EE90;">2009-01-01</span></td>
<td><span class="highlighted-cell" title="Used in transformation" style="background-color:#90EE90;">world championships</span></td>
<td><span class="highlighted-cell" title="Used in transformation" style="background-color:#90EE90;">berlin , germany</span></td>
<td><span class="highlighted-cell" title="Used in transformation" style="background-color:#90EE90;">14th</span></td>
<td><span class="highlighted-cell" title="Used in transformation" style="background-color:#90EE90;">74.47 m</span></td>
</tr>
<tr>
<td><span class="highlighted-cell" title="Used in transformation" style="background-color:#90EE90;">2013-01-01</span></td>
<td><span class="highlighted-cell" title="Used in transformation" style="background-color:#90EE90;">world championships</span></td>
<td><span class="highlighted-cell" title="Used in transformation" style="background-color:#90EE90;">moscow , russia</span></td>
<td><span class="highlighted-cell" title="Used in transformation" style="background-color:#90EE90;">3rd</span></td>
<td><span class="highlighted-cell" title="Used in transformation" style="background-color:#90EE90;">79.36 m</span></td>
</tr>
</table>
</div>
</div>
<hr>
<table>
<tr>
<td>verification_result</td>
</tr>
<tr>
<td>FALSE</td>
</tr>
</table>
</div>
</div>
<hr>
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