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| <h1 class="title topictitle1" id="ariaid-title1">COMPUTE_STATS_MIN_SAMPLE_SIZE Query Option</h1> |
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| <div class="body conbody"> |
| <p class="p">The <code class="ph codeph">COMPUTE_STATS_MIN_SAMPLE_SIZE</code> query option specifies |
| the minimum number of bytes that will be scanned in <code class="ph codeph">COMPUTE STATS |
| TABLESAMPLE</code>, regardless of the user-supplied sampling percent. |
| This query option prevents sampling for very small tables where accurate |
| stats can be obtained cheaply without sampling because the minimum sample |
| size is required to get meaningful stats.</p> |
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| <p class="p"> |
| <strong class="ph b">Type:</strong> integer |
| </p> |
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| <p class="p"><strong class="ph b">Default:</strong> 1GB</p> |
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| <p class="p"><strong class="ph b">Added in</strong>: <span class="keyword">Impala 2.12</span></p> |
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| <p class="p"> |
| <strong class="ph b">Usage notes:</strong> |
| </p> |
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| <div class="parentlink"><strong>Parent topic:</strong> <a class="link" href="../topics/impala_set.html">SET Statement</a></div> |
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