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<title>MADlib: dbscan.sql_in File Reference</title>
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<div class="title">dbscan.sql_in File Reference</div>  </div>
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<p>Partitions a set of observations into clusters of arbitrary shape based on the density of nearby neighbors.  
<a href="#details">More...</a></p>
<table class="memberdecls">
<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="func-members"></a>
Functions</h2></td></tr>
<tr class="memitem:aaa7a45722261ac0660af03bfb5098a8a"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="dbscan_8sql__in.html#aaa7a45722261ac0660af03bfb5098a8a">dbscan</a> (varchar source_table, varchar output_table, varchar id_column, varchar expr_point, float8 eps, integer min_samples, varchar metric, varchar algorithm, integer max_segmentation_depth)</td></tr>
<tr class="separator:aaa7a45722261ac0660af03bfb5098a8a"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a7ed8e66ecbbd9c678b88013ff93e51d2"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="dbscan_8sql__in.html#a7ed8e66ecbbd9c678b88013ff93e51d2">dbscan</a> (varchar source_table, varchar output_table, varchar id_column, varchar expr_point, float8 eps, integer min_samples, varchar metric, varchar algorithm)</td></tr>
<tr class="separator:a7ed8e66ecbbd9c678b88013ff93e51d2"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a346f20a5d38764f89b1ba7aa10789996"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="dbscan_8sql__in.html#a346f20a5d38764f89b1ba7aa10789996">dbscan</a> (varchar source_table, varchar output_table, varchar id_column, varchar expr_point, float8 eps, integer min_samples, varchar metric)</td></tr>
<tr class="separator:a346f20a5d38764f89b1ba7aa10789996"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a98d2c6b68b58fd968dc5962af37a8760"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="dbscan_8sql__in.html#a98d2c6b68b58fd968dc5962af37a8760">dbscan</a> (varchar source_table, varchar output_table, varchar id_column, varchar point, float8 eps, integer min_samples)</td></tr>
<tr class="separator:a98d2c6b68b58fd968dc5962af37a8760"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a48ad25ae170bda153bf61ea8be517cbb"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="dbscan_8sql__in.html#a48ad25ae170bda153bf61ea8be517cbb">dbscan</a> (varchar source_table, varchar output_table, varchar id_column, varchar expr_point, float8 eps)</td></tr>
<tr class="separator:a48ad25ae170bda153bf61ea8be517cbb"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:aa166809d737242f3a9cf6fa0d3916d0a"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="dbscan_8sql__in.html#aa166809d737242f3a9cf6fa0d3916d0a">dbscan_predict</a> (varchar dbscan_table, varchar source_table, varchar id_column, varchar expr_point, varchar output_table)</td></tr>
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<tr class="memitem:ae81d57bcf3b6ae088791e1c31de5697a"><td class="memItemLeft" align="right" valign="top">varchar&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="dbscan_8sql__in.html#ae81d57bcf3b6ae088791e1c31de5697a">dbscan</a> (varchar message)</td></tr>
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<tr class="memitem:abb89f58a901a1cf68871a61c8ef26536"><td class="memItemLeft" align="right" valign="top">varchar&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="dbscan_8sql__in.html#abb89f58a901a1cf68871a61c8ef26536">dbscan</a> ()</td></tr>
<tr class="separator:abb89f58a901a1cf68871a61c8ef26536"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:aee4b2065f25b5aca78af39bdaee3594b"><td class="memItemLeft" align="right" valign="top">varchar&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="dbscan_8sql__in.html#aee4b2065f25b5aca78af39bdaee3594b">dbscan_predict</a> (varchar message)</td></tr>
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<tr class="memitem:a2d826dbde2e4130e9462498e117302d2"><td class="memItemLeft" align="right" valign="top">varchar&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="dbscan_8sql__in.html#a2d826dbde2e4130e9462498e117302d2">dbscan_predict</a> ()</td></tr>
<tr class="separator:a2d826dbde2e4130e9462498e117302d2"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a9d47148f116540cd81dd99b409c22cc2"><td class="memItemLeft" align="right" valign="top">bigint [][]&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="dbscan_8sql__in.html#a9d47148f116540cd81dd99b409c22cc2">sf_merge</a> (bigint[][] state1, bigint[][] state2)</td></tr>
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<tr class="memitem:a872511a4665b980e6b3ccf3faf9b8903"><td class="memItemLeft" align="right" valign="top">bigint [][]&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="dbscan_8sql__in.html#a872511a4665b980e6b3ccf3faf9b8903">sf_final</a> (bigint[][] state)</td></tr>
<tr class="separator:a872511a4665b980e6b3ccf3faf9b8903"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a6cda7ecf8084665837c1da4484789a8d"><td class="memItemLeft" align="right" valign="top">bigint [][]&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="dbscan_8sql__in.html#a6cda7ecf8084665837c1da4484789a8d">sf_transition</a> (bigint[] state, bigint src, bigint dest, integer[] n_rows, integer gp_segment_id)</td></tr>
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<tr class="memitem:ab8a3aac300161a10ef70f80155e2040b"><td class="memItemLeft" align="right" valign="top">aggregate bigint [][]&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="dbscan_8sql__in.html#ab8a3aac300161a10ef70f80155e2040b">build_snowflake_table</a> (bigint, bigint, integer[], integer)</td></tr>
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<tr class="memitem:a8d50d829d7b24ff0c5f54806f4bb04d9"><td class="memItemLeft" align="right" valign="top">set&lt; __dbscan_edge &gt;&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="dbscan_8sql__in.html#a8d50d829d7b24ff0c5f54806f4bb04d9">__dbscan_unpack_edge</a> (bigint[][] packed)</td></tr>
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<tr class="separator:afa4ff8ed454ebf6ebd26feeb86be7215"><td class="memSeparator" colspan="2">&#160;</td></tr>
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<tr class="separator:a5387f3419f22bdc2a68c58911f06a9c9"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ab9f6e2c78a08f4a53879c996e99ea39a"><td class="memItemLeft" align="right" valign="top">aggregate float8&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="dbscan_8sql__in.html#ab9f6e2c78a08f4a53879c996e99ea39a">prod</a> (float8)</td></tr>
<tr class="separator:ab9f6e2c78a08f4a53879c996e99ea39a"><td class="memSeparator" colspan="2">&#160;</td></tr>
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<tr class="separator:a1791757e0e69b719f1f72781e49f55e7"><td class="memSeparator" colspan="2">&#160;</td></tr>
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<tr class="separator:ac7ba75b0a544ae0b3ab4046bf1bbc0df"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a3be8a3be8b9dfda2699c816c2846a000"><td class="memItemLeft" align="right" valign="top">float8&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="dbscan_8sql__in.html#a3be8a3be8b9dfda2699c816c2846a000">__dbscan_range_query_penalty</a> (bigint internal_points, float8 neighbors)</td></tr>
<tr class="separator:a3be8a3be8b9dfda2699c816c2846a000"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a9d04598822699935c291e10cd2376f34"><td class="memItemLeft" align="right" valign="top">bigint&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="dbscan_8sql__in.html#a9d04598822699935c291e10cd2376f34">__dbscan_allocate_segs</a> (bigint avail_segs, float8 left_points, float8 right_points, float8 rqp_left, float8 rqp_right)</td></tr>
<tr class="separator:a9d04598822699935c291e10cd2376f34"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a737010cc8201281f0c5cb71ae694303c"><td class="memItemLeft" align="right" valign="top">__dbscan_losses&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="dbscan_8sql__in.html#a737010cc8201281f0c5cb71ae694303c">__dbscan_segmentation_loss</a> (bigint left_internal, bigint right_internal, bigint left_external, bigint right_external, bigint avail_segs, float8 v, float8 eps, bigint d, float8 eps_bin, float8 eps_bins)</td></tr>
<tr class="separator:a737010cc8201281f0c5cb71ae694303c"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a6a290a6be4bf4ece10b747aad0e155b2"><td class="memItemLeft" align="right" valign="top">set&lt; __dbscan_record &gt;&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="dbscan_8sql__in.html#a6a290a6be4bf4ece10b747aad0e155b2">__dbscan_leaf</a> (__dbscan_record db_rec, real eps, int min_samples, text metric, bigint num_internal_points, bigint num_external_points)</td></tr>
<tr class="separator:a6a290a6be4bf4ece10b747aad0e155b2"><td class="memSeparator" colspan="2">&#160;</td></tr>
</table>
<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
<div class="textblock"><p>Licensed to the Apache Software Foundation (ASF) under one or more contributor license agreements. See the NOTICE file distributed with this work for additional information regarding copyright ownership. The ASF licenses this file to you under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at</p>
<p><a href="http://www.apache.org/licenses/LICENSE-2.0">http://www.apache.org/licenses/LICENSE-2.0</a></p>
<p>Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.</p>
<dl class="section date"><dt>Date</dt><dd>May 2020 </dd></dl>
</div><h2 class="groupheader">Function Documentation</h2>
<a id="a9d04598822699935c291e10cd2376f34"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a9d04598822699935c291e10cd2376f34">&#9670;&nbsp;</a></span>__dbscan_allocate_segs()</h2>

<div class="memitem">
<div class="memproto">
      <table class="memname">
        <tr>
          <td class="memname">bigint __dbscan_allocate_segs </td>
          <td>(</td>
          <td class="paramtype">bigint&#160;</td>
          <td class="paramname"><em>avail_segs</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">float8&#160;</td>
          <td class="paramname"><em>left_points</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">float8&#160;</td>
          <td class="paramname"><em>right_points</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">float8&#160;</td>
          <td class="paramname"><em>rqp_left</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">float8&#160;</td>
          <td class="paramname"><em>rqp_right</em>&#160;</td>
        </tr>
        <tr>
          <td></td>
          <td>)</td>
          <td></td><td></td>
        </tr>
      </table>
</div><div class="memdoc">

</div>
</div>
<a id="ac7ba75b0a544ae0b3ab4046bf1bbc0df"></a>
<h2 class="memtitle"><span class="permalink"><a href="#ac7ba75b0a544ae0b3ab4046bf1bbc0df">&#9670;&nbsp;</a></span>__dbscan_estimate_neighbors()</h2>

<div class="memitem">
<div class="memproto">
      <table class="memname">
        <tr>
          <td class="memname">float8 __dbscan_estimate_neighbors </td>
          <td>(</td>
          <td class="paramtype">float8&#160;</td>
          <td class="paramname"><em>internal_points</em>, </td>
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        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">float8&#160;</td>
          <td class="paramname"><em>v</em>, </td>
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        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">float8&#160;</td>
          <td class="paramname"><em>eps</em>, </td>
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        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">bigint&#160;</td>
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        </tr>
        <tr>
          <td></td>
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</div><div class="memdoc">

</div>
</div>
<a id="a6a290a6be4bf4ece10b747aad0e155b2"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a6a290a6be4bf4ece10b747aad0e155b2">&#9670;&nbsp;</a></span>__dbscan_leaf()</h2>

<div class="memitem">
<div class="memproto">
      <table class="memname">
        <tr>
          <td class="memname">set&lt;__dbscan_record&gt; __dbscan_leaf </td>
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        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">real&#160;</td>
          <td class="paramname"><em>eps</em>, </td>
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        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">int&#160;</td>
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        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">text&#160;</td>
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          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">bigint&#160;</td>
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          <td class="paramkey"></td>
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        </tr>
        <tr>
          <td></td>
          <td>)</td>
          <td></td><td></td>
        </tr>
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</div>
</div>
<a id="a3be8a3be8b9dfda2699c816c2846a000"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a3be8a3be8b9dfda2699c816c2846a000">&#9670;&nbsp;</a></span>__dbscan_range_query_penalty()</h2>

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          <td class="memname">float8 __dbscan_range_query_penalty </td>
          <td>(</td>
          <td class="paramtype">bigint&#160;</td>
          <td class="paramname"><em>internal_points</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">float8&#160;</td>
          <td class="paramname"><em>neighbors</em>&#160;</td>
        </tr>
        <tr>
          <td></td>
          <td>)</td>
          <td></td><td></td>
        </tr>
      </table>
</div><div class="memdoc">

</div>
</div>
<a id="a5387f3419f22bdc2a68c58911f06a9c9"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a5387f3419f22bdc2a68c58911f06a9c9">&#9670;&nbsp;</a></span>__dbscan_safe_exp()</h2>

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          <td class="memname">float8 __dbscan_safe_exp </td>
          <td>(</td>
          <td class="paramtype">float8&#160;</td>
          <td class="paramname"><em>x</em></td><td>)</td>
          <td></td>
        </tr>
      </table>
</div><div class="memdoc">

</div>
</div>
<a id="afa4ff8ed454ebf6ebd26feeb86be7215"></a>
<h2 class="memtitle"><span class="permalink"><a href="#afa4ff8ed454ebf6ebd26feeb86be7215">&#9670;&nbsp;</a></span>__dbscan_safe_ln()</h2>

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          <td class="memname">float8 __dbscan_safe_ln </td>
          <td>(</td>
          <td class="paramtype">float8&#160;</td>
          <td class="paramname"><em>x</em></td><td>)</td>
          <td></td>
        </tr>
      </table>
</div><div class="memdoc">

</div>
</div>
<a id="a737010cc8201281f0c5cb71ae694303c"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a737010cc8201281f0c5cb71ae694303c">&#9670;&nbsp;</a></span>__dbscan_segmentation_loss()</h2>

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<div class="memproto">
      <table class="memname">
        <tr>
          <td class="memname">__dbscan_losses __dbscan_segmentation_loss </td>
          <td>(</td>
          <td class="paramtype">bigint&#160;</td>
          <td class="paramname"><em>left_internal</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">bigint&#160;</td>
          <td class="paramname"><em>right_internal</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">bigint&#160;</td>
          <td class="paramname"><em>left_external</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">bigint&#160;</td>
          <td class="paramname"><em>right_external</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">bigint&#160;</td>
          <td class="paramname"><em>avail_segs</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">float8&#160;</td>
          <td class="paramname"><em>v</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">float8&#160;</td>
          <td class="paramname"><em>eps</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">bigint&#160;</td>
          <td class="paramname"><em>d</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">float8&#160;</td>
          <td class="paramname"><em>eps_bin</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">float8&#160;</td>
          <td class="paramname"><em>eps_bins</em>&#160;</td>
        </tr>
        <tr>
          <td></td>
          <td>)</td>
          <td></td><td></td>
        </tr>
      </table>
</div><div class="memdoc">

</div>
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<a id="a1791757e0e69b719f1f72781e49f55e7"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a1791757e0e69b719f1f72781e49f55e7">&#9670;&nbsp;</a></span>__dbscan_split_volume()</h2>

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          <td class="memname">float8 __dbscan_split_volume </td>
          <td>(</td>
          <td class="paramtype">float8&#160;</td>
          <td class="paramname"><em>v</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">float8&#160;</td>
          <td class="paramname"><em>eps_bin</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">float8&#160;</td>
          <td class="paramname"><em>eps_bins</em>&#160;</td>
        </tr>
        <tr>
          <td></td>
          <td>)</td>
          <td></td><td></td>
        </tr>
      </table>
</div><div class="memdoc">

</div>
</div>
<a id="a8d50d829d7b24ff0c5f54806f4bb04d9"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a8d50d829d7b24ff0c5f54806f4bb04d9">&#9670;&nbsp;</a></span>__dbscan_unpack_edge()</h2>

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          <td class="memname">set&lt;__dbscan_edge&gt; __dbscan_unpack_edge </td>
          <td>(</td>
          <td class="paramtype">bigint&#160;</td>
          <td class="paramname"><em>packed</em>[][]</td><td>)</td>
          <td></td>
        </tr>
      </table>
</div><div class="memdoc">

</div>
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<h2 class="memtitle"><span class="permalink"><a href="#ab8a3aac300161a10ef70f80155e2040b">&#9670;&nbsp;</a></span>build_snowflake_table()</h2>

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          <td class="memname">aggregate bigint [][] build_snowflake_table </td>
          <td>(</td>
          <td class="paramtype">bigint&#160;</td>
          <td class="paramname">, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">bigint&#160;</td>
          <td class="paramname">, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">integer&#160;</td>
          <td class="paramname">[], </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">integer&#160;</td>
          <td class="paramname">&#160;</td>
        </tr>
        <tr>
          <td></td>
          <td>)</td>
          <td></td><td></td>
        </tr>
      </table>
</div><div class="memdoc">

</div>
</div>
<a id="aaa7a45722261ac0660af03bfb5098a8a"></a>
<h2 class="memtitle"><span class="permalink"><a href="#aaa7a45722261ac0660af03bfb5098a8a">&#9670;&nbsp;</a></span>dbscan() <span class="overload">[1/7]</span></h2>

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          <td class="memname">void dbscan </td>
          <td>(</td>
          <td class="paramtype">varchar&#160;</td>
          <td class="paramname"><em>source_table</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">varchar&#160;</td>
          <td class="paramname"><em>output_table</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">varchar&#160;</td>
          <td class="paramname"><em>id_column</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">varchar&#160;</td>
          <td class="paramname"><em>expr_point</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">float8&#160;</td>
          <td class="paramname"><em>eps</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">integer&#160;</td>
          <td class="paramname"><em>min_samples</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">varchar&#160;</td>
          <td class="paramname"><em>metric</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">varchar&#160;</td>
          <td class="paramname"><em>algorithm</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">integer&#160;</td>
          <td class="paramname"><em>max_segmentation_depth</em>&#160;</td>
        </tr>
        <tr>
          <td></td>
          <td>)</td>
          <td></td><td></td>
        </tr>
      </table>
</div><div class="memdoc">

</div>
</div>
<a id="a7ed8e66ecbbd9c678b88013ff93e51d2"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a7ed8e66ecbbd9c678b88013ff93e51d2">&#9670;&nbsp;</a></span>dbscan() <span class="overload">[2/7]</span></h2>

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          <td class="memname">void dbscan </td>
          <td>(</td>
          <td class="paramtype">varchar&#160;</td>
          <td class="paramname"><em>source_table</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">varchar&#160;</td>
          <td class="paramname"><em>output_table</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">varchar&#160;</td>
          <td class="paramname"><em>id_column</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">varchar&#160;</td>
          <td class="paramname"><em>expr_point</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">float8&#160;</td>
          <td class="paramname"><em>eps</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">integer&#160;</td>
          <td class="paramname"><em>min_samples</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">varchar&#160;</td>
          <td class="paramname"><em>metric</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">varchar&#160;</td>
          <td class="paramname"><em>algorithm</em>&#160;</td>
        </tr>
        <tr>
          <td></td>
          <td>)</td>
          <td></td><td></td>
        </tr>
      </table>
</div><div class="memdoc">

</div>
</div>
<a id="a346f20a5d38764f89b1ba7aa10789996"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a346f20a5d38764f89b1ba7aa10789996">&#9670;&nbsp;</a></span>dbscan() <span class="overload">[3/7]</span></h2>

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          <td class="memname">void dbscan </td>
          <td>(</td>
          <td class="paramtype">varchar&#160;</td>
          <td class="paramname"><em>source_table</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">varchar&#160;</td>
          <td class="paramname"><em>output_table</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">varchar&#160;</td>
          <td class="paramname"><em>id_column</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">varchar&#160;</td>
          <td class="paramname"><em>expr_point</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">float8&#160;</td>
          <td class="paramname"><em>eps</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">integer&#160;</td>
          <td class="paramname"><em>min_samples</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">varchar&#160;</td>
          <td class="paramname"><em>metric</em>&#160;</td>
        </tr>
        <tr>
          <td></td>
          <td>)</td>
          <td></td><td></td>
        </tr>
      </table>
</div><div class="memdoc">

</div>
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<a id="a98d2c6b68b58fd968dc5962af37a8760"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a98d2c6b68b58fd968dc5962af37a8760">&#9670;&nbsp;</a></span>dbscan() <span class="overload">[4/7]</span></h2>

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          <td class="memname">void dbscan </td>
          <td>(</td>
          <td class="paramtype">varchar&#160;</td>
          <td class="paramname"><em>source_table</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">varchar&#160;</td>
          <td class="paramname"><em>output_table</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">varchar&#160;</td>
          <td class="paramname"><em>id_column</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">varchar&#160;</td>
          <td class="paramname"><em>point</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">float8&#160;</td>
          <td class="paramname"><em>eps</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">integer&#160;</td>
          <td class="paramname"><em>min_samples</em>&#160;</td>
        </tr>
        <tr>
          <td></td>
          <td>)</td>
          <td></td><td></td>
        </tr>
      </table>
</div><div class="memdoc">

</div>
</div>
<a id="a48ad25ae170bda153bf61ea8be517cbb"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a48ad25ae170bda153bf61ea8be517cbb">&#9670;&nbsp;</a></span>dbscan() <span class="overload">[5/7]</span></h2>

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<div class="memproto">
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          <td class="memname">void dbscan </td>
          <td>(</td>
          <td class="paramtype">varchar&#160;</td>
          <td class="paramname"><em>source_table</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">varchar&#160;</td>
          <td class="paramname"><em>output_table</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">varchar&#160;</td>
          <td class="paramname"><em>id_column</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">varchar&#160;</td>
          <td class="paramname"><em>expr_point</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">float8&#160;</td>
          <td class="paramname"><em>eps</em>&#160;</td>
        </tr>
        <tr>
          <td></td>
          <td>)</td>
          <td></td><td></td>
        </tr>
      </table>
</div><div class="memdoc">

</div>
</div>
<a id="ae81d57bcf3b6ae088791e1c31de5697a"></a>
<h2 class="memtitle"><span class="permalink"><a href="#ae81d57bcf3b6ae088791e1c31de5697a">&#9670;&nbsp;</a></span>dbscan() <span class="overload">[6/7]</span></h2>

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          <td class="memname">varchar dbscan </td>
          <td>(</td>
          <td class="paramtype">varchar&#160;</td>
          <td class="paramname"><em>message</em></td><td>)</td>
          <td></td>
        </tr>
      </table>
</div><div class="memdoc">

</div>
</div>
<a id="abb89f58a901a1cf68871a61c8ef26536"></a>
<h2 class="memtitle"><span class="permalink"><a href="#abb89f58a901a1cf68871a61c8ef26536">&#9670;&nbsp;</a></span>dbscan() <span class="overload">[7/7]</span></h2>

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<div class="memproto">
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          <td class="memname">varchar dbscan </td>
          <td>(</td>
          <td class="paramname"></td><td>)</td>
          <td></td>
        </tr>
      </table>
</div><div class="memdoc">

</div>
</div>
<a id="aa166809d737242f3a9cf6fa0d3916d0a"></a>
<h2 class="memtitle"><span class="permalink"><a href="#aa166809d737242f3a9cf6fa0d3916d0a">&#9670;&nbsp;</a></span>dbscan_predict() <span class="overload">[1/3]</span></h2>

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<div class="memproto">
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          <td class="memname">void dbscan_predict </td>
          <td>(</td>
          <td class="paramtype">varchar&#160;</td>
          <td class="paramname"><em>dbscan_table</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">varchar&#160;</td>
          <td class="paramname"><em>source_table</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">varchar&#160;</td>
          <td class="paramname"><em>id_column</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">varchar&#160;</td>
          <td class="paramname"><em>expr_point</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">varchar&#160;</td>
          <td class="paramname"><em>output_table</em>&#160;</td>
        </tr>
        <tr>
          <td></td>
          <td>)</td>
          <td></td><td></td>
        </tr>
      </table>
</div><div class="memdoc">

</div>
</div>
<a id="aee4b2065f25b5aca78af39bdaee3594b"></a>
<h2 class="memtitle"><span class="permalink"><a href="#aee4b2065f25b5aca78af39bdaee3594b">&#9670;&nbsp;</a></span>dbscan_predict() <span class="overload">[2/3]</span></h2>

<div class="memitem">
<div class="memproto">
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          <td class="memname">varchar dbscan_predict </td>
          <td>(</td>
          <td class="paramtype">varchar&#160;</td>
          <td class="paramname"><em>message</em></td><td>)</td>
          <td></td>
        </tr>
      </table>
</div><div class="memdoc">

</div>
</div>
<a id="a2d826dbde2e4130e9462498e117302d2"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a2d826dbde2e4130e9462498e117302d2">&#9670;&nbsp;</a></span>dbscan_predict() <span class="overload">[3/3]</span></h2>

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<div class="memproto">
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          <td class="memname">varchar dbscan_predict </td>
          <td>(</td>
          <td class="paramname"></td><td>)</td>
          <td></td>
        </tr>
      </table>
</div><div class="memdoc">

</div>
</div>
<a id="ab9f6e2c78a08f4a53879c996e99ea39a"></a>
<h2 class="memtitle"><span class="permalink"><a href="#ab9f6e2c78a08f4a53879c996e99ea39a">&#9670;&nbsp;</a></span>prod()</h2>

<div class="memitem">
<div class="memproto">
      <table class="memname">
        <tr>
          <td class="memname">aggregate float8 prod </td>
          <td>(</td>
          <td class="paramtype">float8&#160;</td>
          <td class="paramname"></td><td>)</td>
          <td></td>
        </tr>
      </table>
</div><div class="memdoc">

</div>
</div>
<a id="a872511a4665b980e6b3ccf3faf9b8903"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a872511a4665b980e6b3ccf3faf9b8903">&#9670;&nbsp;</a></span>sf_final()</h2>

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          <td class="memname">bigint [][] sf_final </td>
          <td>(</td>
          <td class="paramtype">bigint&#160;</td>
          <td class="paramname"><em>state</em>[][]</td><td>)</td>
          <td></td>
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<h2 class="memtitle"><span class="permalink"><a href="#a9d47148f116540cd81dd99b409c22cc2">&#9670;&nbsp;</a></span>sf_merge()</h2>

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          <td class="memname">bigint [][] sf_merge </td>
          <td>(</td>
          <td class="paramtype">bigint&#160;</td>
          <td class="paramname"><em>state1</em>[][], </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">bigint&#160;</td>
          <td class="paramname"><em>state2</em>[][]&#160;</td>
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          <td></td>
          <td>)</td>
          <td></td><td></td>
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<h2 class="memtitle"><span class="permalink"><a href="#a6cda7ecf8084665837c1da4484789a8d">&#9670;&nbsp;</a></span>sf_transition()</h2>

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          <td class="memname">bigint [][] sf_transition </td>
          <td>(</td>
          <td class="paramtype">bigint []&#160;</td>
          <td class="paramname"><em>state</em>, </td>
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          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">bigint&#160;</td>
          <td class="paramname"><em>src</em>, </td>
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          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">bigint&#160;</td>
          <td class="paramname"><em>dest</em>, </td>
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          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">integer []&#160;</td>
          <td class="paramname"><em>n_rows</em>, </td>
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          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">integer&#160;</td>
          <td class="paramname"><em>gp_segment_id</em>&#160;</td>
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          <td></td>
          <td>)</td>
          <td></td><td></td>
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