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<html><head>
<style>
body { font-family: Arial, sans-serif; margin: 20px; }
h1 { text-align: center; }
.cot-title { color: blue; }
.pos-title { color: green; }
h2 { color: black; text-align: left; }
h3 { color: black; text-align: left; }
h4 { color: darkslategray; }
table { width: 100%; border-collapse: collapse; margin: 20px 0; }
table, th, td { border: 1px solid #ddd; padding: 8px; }
th { background-color: #f2f2f2; }
tr:nth-child(even) { background-color: #f9f9f9; }
.highlight { background-color: #ffffcc; }
.true { color: green; }
.false { color: red; }
.highlighted-cell { background-color: yellow; cursor: pointer; }
.step-title { background-color: #f1f1f1; color: #444; padding: 10px; margin: 10px 0; font-size: 18px; border-left: 4px solid #888; }
.step { display: block; }
</style>
</head><body>
<hr/>
<h3><span>Statement:</span> there are only three highest ranks listed in the table</h3>
<h3>Input Table: list of sumo record holders</h3>
<div class="step">
<div class="step">
<div class="step-title">Step 1: Select distinct values from the 'highest_rank' column.</div>
<div class="content" id="step-1">
<table>
<tr>
<td>name</td>
<td>total</td>
<td>first</td>
<td>last</td>
<td>highest_rank</td>
</tr>
<tr>
<td>kotonishiki</td>
<td>34</td>
<td>1990-09-01</td>
<td>1999-09-01</td>
<td>sekiwake</td>
</tr>
<tr>
<td>kaiō</td>
<td>32</td>
<td>1994-05-01</td>
<td>2000-07-01</td>
<td>ōzeki</td>
</tr>
<tr>
<td>musōyama</td>
<td>31</td>
<td>1994-03-01</td>
<td>2000-09-01</td>
<td>ōzeki</td>
</tr>
<tr>
<td>hasegawa</td>
<td>30</td>
<td>1965-11-01</td>
<td>1974-09-01</td>
<td>sekiwake</td>
</tr>
<tr>
<td>kotomitsuki</td>
<td>30</td>
<td>2001-01-01</td>
<td>2007-07-01</td>
<td>ōzeki</td>
</tr>
<tr>
<td>akinoshima</td>
<td>27</td>
<td>1988-11-01</td>
<td>2000-09-01</td>
<td>sekiwake</td>
</tr>
<tr>
<td>takamiyama</td>
<td>27</td>
<td>1969-11-01</td>
<td>1982-09-01</td>
<td>sekiwake</td>
</tr>
<tr>
<td>takatōriki</td>
<td>26</td>
<td>1991-05-01</td>
<td>2000-05-01</td>
<td>sekiwake</td>
</tr>
<tr>
<td>wakanosato</td>
<td>26</td>
<td>2000-11-01</td>
<td>2005-09-01</td>
<td>sekiwake</td>
</tr>
<tr>
<td>daikirin</td>
<td>22</td>
<td>1966-11-01</td>
<td>1970-09-01</td>
<td>ōzeki</td>
</tr>
<tr>
<td>tochiazuma ii</td>
<td>22</td>
<td>1997-07-01</td>
<td>2005-01-01</td>
<td>ōzeki</td>
</tr>
<tr>
<td>kisenosato</td>
<td>22</td>
<td>2006-07-01</td>
<td>2011-09-01</td>
<td>ōzeki</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 distinct values is equal to 3, otherwise return FALSE.</div>
<div class="content" id="step-0">
<table>
<tr>
<td>highest_rank</td>
</tr>
<tr>
<td><span class="highlighted-cell" style="background-color:#90EE90;" title="Used in transformation">sekiwake</span></td>
</tr>
<tr>
<td><span class="highlighted-cell" style="background-color:#90EE90;" title="Used in transformation">ōzeki</span></td>
</tr>
</table>
</div>
</div>
<hr/>

</div>
</div>
<hr/>
</body></html>