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Lu, Huayi
a24ca60074
Reviewed-by: Hasko, Vladimir <vladimir.hasko@t-systems.com> Co-authored-by: Lu, Huayi <luhuayi@huawei.com> Co-committed-by: Lu, Huayi <luhuayi@huawei.com>
13 lines
1.5 KiB
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13 lines
1.5 KiB
HTML
<a name="EN-US_TOPIC_0000001099150986"></a><a name="EN-US_TOPIC_0000001099150986"></a>
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<h1 class="topictitle1">Limitations</h1>
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<div id="body8662426"><p id="EN-US_TOPIC_0000001099150986__aafaa5020949e4ef3b07a4529809515e9">The current limitations of <span id="EN-US_TOPIC_0000001099150986__text2104206234">GaussDB(DWS)</span>'s full text search are:</p>
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<ul id="EN-US_TOPIC_0000001099150986__uecaf3188ad774a289386f3c6c0b6d1f3"><li id="EN-US_TOPIC_0000001099150986__ld783c5ef59ca4fa58c68233047d1d740">The length of each lexeme must be less than 2 KB.</li><li id="EN-US_TOPIC_0000001099150986__laf5404b65c5c4b9cbdeb6221a247a164">The length of a <strong id="EN-US_TOPIC_0000001099150986__b84235270611122">tsvector</strong> (lexemes + positions) must be less than 1 megabyte.</li><li id="EN-US_TOPIC_0000001099150986__lc91bdfc4562a4a28b68f1e071508753a">Position values in <strong id="EN-US_TOPIC_0000001099150986__b842352706111225">tsvector</strong> must be greater than 0 and no more than 16383.</li><li id="EN-US_TOPIC_0000001099150986__l5b765a8d61a74ec085675a03ed2d9a59">No more than 256 positions per lexeme. Excessive positions, if any, will be discarded.</li><li id="EN-US_TOPIC_0000001099150986__l1d34c0a13f48424f915a82169334e06b">The number of nodes (lexemes + operators) in a tsquery must be less than 32768.</li></ul>
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</div>
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<div>
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<div class="familylinks">
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<div class="parentlink"><strong>Parent topic:</strong> <a href="dws_06_0081.html">Full Text Search</a></div>
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</div>
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</div>
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