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[49/51] [partial] incubator-madlib-site git commit: Add all files
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http://git-wip-us.apache.org/repos/asf/incubator-madlib-site/blob/7258f51a/docs/latest/array__ops_8sql__in.html
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+<div class="header">
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+<a href="#func-members">Functions</a> </div>
+ <div class="headertitle">
+<div class="title">array_ops.sql_in File Reference</div> </div>
+</div><!--header-->
+<div class="contents">
+
+<p>implementation of array operations in SQL
+<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:a91c8d3715142927b3967f05a4fbf1575"><td class="memItemLeft" align="right" valign="top">anyarray </td><td class="memItemRight" valign="bottom"><a class="el" href="array__ops_8sql__in.html#a91c8d3715142927b3967f05a4fbf1575">array_add</a> (anyarray x, anyarray y)</td></tr>
+<tr class="memdesc:a91c8d3715142927b3967f05a4fbf1575"><td class="mdescLeft"> </td><td class="mdescRight">Adds two arrays. It requires that all the values are NON-NULL. Return type is the same as the input type. <a href="#a91c8d3715142927b3967f05a4fbf1575">More...</a><br /></td></tr>
+<tr class="separator:a91c8d3715142927b3967f05a4fbf1575"><td class="memSeparator" colspan="2"> </td></tr>
+<tr class="memitem:a26e8508a2bae10a6574cec697a270eea"><td class="memItemLeft" align="right" valign="top">aggregate anyarray </td><td class="memItemRight" valign="bottom"><a class="el" href="array__ops_8sql__in.html#a26e8508a2bae10a6574cec697a270eea">sum</a> (anyarray)</td></tr>
+<tr class="memdesc:a26e8508a2bae10a6574cec697a270eea"><td class="mdescLeft"> </td><td class="mdescRight">Aggregate, element-wise sum of arrays. It requires that all the values are NON-NULL. Return type is the same as the input type. <a href="#a26e8508a2bae10a6574cec697a270eea">More...</a><br /></td></tr>
+<tr class="separator:a26e8508a2bae10a6574cec697a270eea"><td class="memSeparator" colspan="2"> </td></tr>
+<tr class="memitem:a2875a161a01c7dcdea9a4997b074eefc"><td class="memItemLeft" align="right" valign="top">anyarray </td><td class="memItemRight" valign="bottom"><a class="el" href="array__ops_8sql__in.html#a2875a161a01c7dcdea9a4997b074eefc">array_sub</a> (anyarray x, anyarray y)</td></tr>
+<tr class="memdesc:a2875a161a01c7dcdea9a4997b074eefc"><td class="mdescLeft"> </td><td class="mdescRight">Subtracts two arrays. It requires that all the values are NON-NULL. Return type is the same as the input type. <a href="#a2875a161a01c7dcdea9a4997b074eefc">More...</a><br /></td></tr>
+<tr class="separator:a2875a161a01c7dcdea9a4997b074eefc"><td class="memSeparator" colspan="2"> </td></tr>
+<tr class="memitem:a652d70c480d484c4a1a92ded384b0dd7"><td class="memItemLeft" align="right" valign="top">anyarray </td><td class="memItemRight" valign="bottom"><a class="el" href="array__ops_8sql__in.html#a652d70c480d484c4a1a92ded384b0dd7">array_mult</a> (anyarray x, anyarray y)</td></tr>
+<tr class="memdesc:a652d70c480d484c4a1a92ded384b0dd7"><td class="mdescLeft"> </td><td class="mdescRight">Element-wise product of two arrays. It requires that all the values are NON-NULL. Return type is the same as the input type. <a href="#a652d70c480d484c4a1a92ded384b0dd7">More...</a><br /></td></tr>
+<tr class="separator:a652d70c480d484c4a1a92ded384b0dd7"><td class="memSeparator" colspan="2"> </td></tr>
+<tr class="memitem:a6cc05e7052495f8b64692faf40219576"><td class="memItemLeft" align="right" valign="top">anyarray </td><td class="memItemRight" valign="bottom"><a class="el" href="array__ops_8sql__in.html#a6cc05e7052495f8b64692faf40219576">array_div</a> (anyarray x, anyarray y)</td></tr>
+<tr class="memdesc:a6cc05e7052495f8b64692faf40219576"><td class="mdescLeft"> </td><td class="mdescRight">Element-wise division of two arrays. It requires that all the values are NON-NULL. Return type is the same as the input type. <a href="#a6cc05e7052495f8b64692faf40219576">More...</a><br /></td></tr>
+<tr class="separator:a6cc05e7052495f8b64692faf40219576"><td class="memSeparator" colspan="2"> </td></tr>
+<tr class="memitem:acde10964ed23b7c8da515fb84cb8d5e0"><td class="memItemLeft" align="right" valign="top">float8 </td><td class="memItemRight" valign="bottom"><a class="el" href="array__ops_8sql__in.html#acde10964ed23b7c8da515fb84cb8d5e0">array_dot</a> (anyarray x, anyarray y)</td></tr>
+<tr class="memdesc:acde10964ed23b7c8da515fb84cb8d5e0"><td class="mdescLeft"> </td><td class="mdescRight">Dot-product of two arrays. It requires that all the values are NON-NULL. Return type is the same as the input type. <a href="#acde10964ed23b7c8da515fb84cb8d5e0">More...</a><br /></td></tr>
+<tr class="separator:acde10964ed23b7c8da515fb84cb8d5e0"><td class="memSeparator" colspan="2"> </td></tr>
+<tr class="memitem:aedf6cb13eb4803bcc12dc4d95ea8ff4e"><td class="memItemLeft" align="right" valign="top">bool </td><td class="memItemRight" valign="bottom"><a class="el" href="array__ops_8sql__in.html#aedf6cb13eb4803bcc12dc4d95ea8ff4e">array_contains</a> (anyarray x, anyarray y)</td></tr>
+<tr class="memdesc:aedf6cb13eb4803bcc12dc4d95ea8ff4e"><td class="mdescLeft"> </td><td class="mdescRight">Checks whether one array contains the other. This function returns TRUE if each non-zero element in the right array equals to the element with the same index in the left array. <a href="#aedf6cb13eb4803bcc12dc4d95ea8ff4e">More...</a><br /></td></tr>
+<tr class="separator:aedf6cb13eb4803bcc12dc4d95ea8ff4e"><td class="memSeparator" colspan="2"> </td></tr>
+<tr class="memitem:ae891429cc50705c530f3e5ca15541849"><td class="memItemLeft" align="right" valign="top">anyelement </td><td class="memItemRight" valign="bottom"><a class="el" href="array__ops_8sql__in.html#ae891429cc50705c530f3e5ca15541849">array_max</a> (anyarray x)</td></tr>
+<tr class="memdesc:ae891429cc50705c530f3e5ca15541849"><td class="mdescLeft"> </td><td class="mdescRight">This function finds the maximum value in the array. NULLs are ignored. Return type is the same as the input type. <a href="#ae891429cc50705c530f3e5ca15541849">More...</a><br /></td></tr>
+<tr class="separator:ae891429cc50705c530f3e5ca15541849"><td class="memSeparator" colspan="2"> </td></tr>
+<tr class="memitem:aa415256a9064aecc600dfb5e377fb7b1"><td class="memItemLeft" align="right" valign="top">float8[] </td><td class="memItemRight" valign="bottom"><a class="el" href="array__ops_8sql__in.html#aa415256a9064aecc600dfb5e377fb7b1">array_max_index</a> (anyarray x)</td></tr>
+<tr class="memdesc:aa415256a9064aecc600dfb5e377fb7b1"><td class="mdescLeft"> </td><td class="mdescRight">This function finds the maximum value and corresponding index in the array. NULLs are ignored. Return type is the same as the input type. <a href="#aa415256a9064aecc600dfb5e377fb7b1">More...</a><br /></td></tr>
+<tr class="separator:aa415256a9064aecc600dfb5e377fb7b1"><td class="memSeparator" colspan="2"> </td></tr>
+<tr class="memitem:a6659bf9d9363eb179fab34f81f8ac59b"><td class="memItemLeft" align="right" valign="top">anyelement </td><td class="memItemRight" valign="bottom"><a class="el" href="array__ops_8sql__in.html#a6659bf9d9363eb179fab34f81f8ac59b">array_min</a> (anyarray x)</td></tr>
+<tr class="memdesc:a6659bf9d9363eb179fab34f81f8ac59b"><td class="mdescLeft"> </td><td class="mdescRight">This function finds the minimum value in the array. NULLs are ignored. Return type is the same as the input type. <a href="#a6659bf9d9363eb179fab34f81f8ac59b">More...</a><br /></td></tr>
+<tr class="separator:a6659bf9d9363eb179fab34f81f8ac59b"><td class="memSeparator" colspan="2"> </td></tr>
+<tr class="memitem:a813a4d9ffc1c18b1b3e18f6ecdb2051f"><td class="memItemLeft" align="right" valign="top">float8[] </td><td class="memItemRight" valign="bottom"><a class="el" href="array__ops_8sql__in.html#a813a4d9ffc1c18b1b3e18f6ecdb2051f">array_min_index</a> (anyarray x)</td></tr>
+<tr class="memdesc:a813a4d9ffc1c18b1b3e18f6ecdb2051f"><td class="mdescLeft"> </td><td class="mdescRight">This function finds the minimum value and corresponding index in the array. NULLs are ignored. Return type is the same as the input type. <a href="#a813a4d9ffc1c18b1b3e18f6ecdb2051f">More...</a><br /></td></tr>
+<tr class="separator:a813a4d9ffc1c18b1b3e18f6ecdb2051f"><td class="memSeparator" colspan="2"> </td></tr>
+<tr class="memitem:a4c98f20e6a737358806f63318daea5ec"><td class="memItemLeft" align="right" valign="top">anyelement </td><td class="memItemRight" valign="bottom"><a class="el" href="array__ops_8sql__in.html#a4c98f20e6a737358806f63318daea5ec">array_sum</a> (anyarray x)</td></tr>
+<tr class="memdesc:a4c98f20e6a737358806f63318daea5ec"><td class="mdescLeft"> </td><td class="mdescRight">This function finds the sum of the values in the array. NULLs are ignored. Return type is the same as the input type. <a href="#a4c98f20e6a737358806f63318daea5ec">More...</a><br /></td></tr>
+<tr class="separator:a4c98f20e6a737358806f63318daea5ec"><td class="memSeparator" colspan="2"> </td></tr>
+<tr class="memitem:a418de59800833aa95f9b7cbd6b12901c"><td class="memItemLeft" align="right" valign="top">float8 </td><td class="memItemRight" valign="bottom"><a class="el" href="array__ops_8sql__in.html#a418de59800833aa95f9b7cbd6b12901c">array_sum_big</a> (anyarray x)</td></tr>
+<tr class="memdesc:a418de59800833aa95f9b7cbd6b12901c"><td class="mdescLeft"> </td><td class="mdescRight">This function finds the sum of the values in the array. NULLs are ignored. Return type is always FLOAT8 regardless of input. This function is meant to replace <a class="el" href="array__ops_8sql__in.html#a4c98f20e6a737358806f63318daea5ec" title="This function finds the sum of the values in the array. NULLs are ignored. Return type is the same as...">array_sum()</a> in the cases when sum may overflow the element type. <a href="#a418de59800833aa95f9b7cbd6b12901c">More...</a><br /></td></tr>
+<tr class="separator:a418de59800833aa95f9b7cbd6b12901c"><td class="memSeparator" colspan="2"> </td></tr>
+<tr class="memitem:a407598f9eb70637798b02fd731bfca2c"><td class="memItemLeft" align="right" valign="top">float8 </td><td class="memItemRight" valign="bottom"><a class="el" href="array__ops_8sql__in.html#a407598f9eb70637798b02fd731bfca2c">array_mean</a> (anyarray x)</td></tr>
+<tr class="memdesc:a407598f9eb70637798b02fd731bfca2c"><td class="mdescLeft"> </td><td class="mdescRight">This function finds the mean of the values in the array. NULLs are ignored. <a href="#a407598f9eb70637798b02fd731bfca2c">More...</a><br /></td></tr>
+<tr class="separator:a407598f9eb70637798b02fd731bfca2c"><td class="memSeparator" colspan="2"> </td></tr>
+<tr class="memitem:a3b6c2d173a611e6d6b184d825c2b336d"><td class="memItemLeft" align="right" valign="top">float8 </td><td class="memItemRight" valign="bottom"><a class="el" href="array__ops_8sql__in.html#a3b6c2d173a611e6d6b184d825c2b336d">array_stddev</a> (anyarray x)</td></tr>
+<tr class="memdesc:a3b6c2d173a611e6d6b184d825c2b336d"><td class="mdescLeft"> </td><td class="mdescRight">This function finds the standard deviation of the values in the array. NULLs are ignored. <a href="#a3b6c2d173a611e6d6b184d825c2b336d">More...</a><br /></td></tr>
+<tr class="separator:a3b6c2d173a611e6d6b184d825c2b336d"><td class="memSeparator" colspan="2"> </td></tr>
+<tr class="memitem:ab066e65a41db78b00b4532996b2a6efc"><td class="memItemLeft" align="right" valign="top">float8[] </td><td class="memItemRight" valign="bottom"><a class="el" href="array__ops_8sql__in.html#ab066e65a41db78b00b4532996b2a6efc">array_of_float</a> (integer k)</td></tr>
+<tr class="memdesc:ab066e65a41db78b00b4532996b2a6efc"><td class="mdescLeft"> </td><td class="mdescRight">This function creates an array of set size (the argument value) of FLOAT8, initializing the values to 0.0;. <a href="#ab066e65a41db78b00b4532996b2a6efc">More...</a><br /></td></tr>
+<tr class="separator:ab066e65a41db78b00b4532996b2a6efc"><td class="memSeparator" colspan="2"> </td></tr>
+<tr class="memitem:ab7d8550e66d2e0bd54b8f0997d93880c"><td class="memItemLeft" align="right" valign="top">bigint[] </td><td class="memItemRight" valign="bottom"><a class="el" href="array__ops_8sql__in.html#ab7d8550e66d2e0bd54b8f0997d93880c">array_of_bigint</a> (integer k)</td></tr>
+<tr class="memdesc:ab7d8550e66d2e0bd54b8f0997d93880c"><td class="mdescLeft"> </td><td class="mdescRight">This function creates an array of set size (the argument value) of BIGINT, initializing the values to 0;. <a href="#ab7d8550e66d2e0bd54b8f0997d93880c">More...</a><br /></td></tr>
+<tr class="separator:ab7d8550e66d2e0bd54b8f0997d93880c"><td class="memSeparator" colspan="2"> </td></tr>
+<tr class="memitem:a065a5323f3b742be47e39ad8b4c90fc2"><td class="memItemLeft" align="right" valign="top">anyarray </td><td class="memItemRight" valign="bottom"><a class="el" href="array__ops_8sql__in.html#a065a5323f3b742be47e39ad8b4c90fc2">array_fill</a> (anyarray x, anyelement k)</td></tr>
+<tr class="memdesc:a065a5323f3b742be47e39ad8b4c90fc2"><td class="mdescLeft"> </td><td class="mdescRight">This functions set every values in the array to some desired value (provided as the argument). <a href="#a065a5323f3b742be47e39ad8b4c90fc2">More...</a><br /></td></tr>
+<tr class="separator:a065a5323f3b742be47e39ad8b4c90fc2"><td class="memSeparator" colspan="2"> </td></tr>
+<tr class="memitem:ae6881cc5c86941b6ffca35d7f3cd5c12"><td class="memItemLeft" align="right" valign="top">anyarray </td><td class="memItemRight" valign="bottom"><a class="el" href="array__ops_8sql__in.html#ae6881cc5c86941b6ffca35d7f3cd5c12">array_scalar_mult</a> (anyarray x, anyelement k)</td></tr>
+<tr class="memdesc:ae6881cc5c86941b6ffca35d7f3cd5c12"><td class="mdescLeft"> </td><td class="mdescRight">This function takes an array as the input and executes element-wise multiplication by the scalar provided as the second argument, returning the resulting array. It requires that all the values are NON-NULL. Return type is the same as the input type. <a href="#ae6881cc5c86941b6ffca35d7f3cd5c12">More...</a><br /></td></tr>
+<tr class="separator:ae6881cc5c86941b6ffca35d7f3cd5c12"><td class="memSeparator" colspan="2"> </td></tr>
+</table>
+<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
+<div class="textblock"><dl class="section date"><dt>Date</dt><dd>April 2011 </dd></dl>
+</div><h2 class="groupheader">Function Documentation</h2>
+<a class="anchor" id="a91c8d3715142927b3967f05a4fbf1575"></a>
+<div class="memitem">
+<div class="memproto">
+ <table class="memname">
+ <tr>
+ <td class="memname">anyarray array_add </td>
+ <td>(</td>
+ <td class="paramtype">anyarray </td>
+ <td class="paramname"><em>x</em>, </td>
+ </tr>
+ <tr>
+ <td class="paramkey"></td>
+ <td></td>
+ <td class="paramtype">anyarray </td>
+ <td class="paramname"><em>y</em> </td>
+ </tr>
+ <tr>
+ <td></td>
+ <td>)</td>
+ <td></td><td></td>
+ </tr>
+ </table>
+</div><div class="memdoc">
+<dl class="params"><dt>Parameters</dt><dd>
+ <table class="params">
+ <tr><td class="paramname">x</td><td>Array x </td></tr>
+ <tr><td class="paramname">y</td><td>Array y </td></tr>
+ </table>
+ </dd>
+</dl>
+<dl class="section return"><dt>Returns</dt><dd>Sum of x and y. </dd></dl>
+
+</div>
+</div>
+<a class="anchor" id="aedf6cb13eb4803bcc12dc4d95ea8ff4e"></a>
+<div class="memitem">
+<div class="memproto">
+ <table class="memname">
+ <tr>
+ <td class="memname">bool array_contains </td>
+ <td>(</td>
+ <td class="paramtype">anyarray </td>
+ <td class="paramname"><em>x</em>, </td>
+ </tr>
+ <tr>
+ <td class="paramkey"></td>
+ <td></td>
+ <td class="paramtype">anyarray </td>
+ <td class="paramname"><em>y</em> </td>
+ </tr>
+ <tr>
+ <td></td>
+ <td>)</td>
+ <td></td><td></td>
+ </tr>
+ </table>
+</div><div class="memdoc">
+<dl class="params"><dt>Parameters</dt><dd>
+ <table class="params">
+ <tr><td class="paramname">x</td><td>Array x </td></tr>
+ <tr><td class="paramname">y</td><td>Array y </td></tr>
+ </table>
+ </dd>
+</dl>
+<dl class="section return"><dt>Returns</dt><dd>Returns true if x contains y. </dd></dl>
+
+</div>
+</div>
+<a class="anchor" id="a6cc05e7052495f8b64692faf40219576"></a>
+<div class="memitem">
+<div class="memproto">
+ <table class="memname">
+ <tr>
+ <td class="memname">anyarray array_div </td>
+ <td>(</td>
+ <td class="paramtype">anyarray </td>
+ <td class="paramname"><em>x</em>, </td>
+ </tr>
+ <tr>
+ <td class="paramkey"></td>
+ <td></td>
+ <td class="paramtype">anyarray </td>
+ <td class="paramname"><em>y</em> </td>
+ </tr>
+ <tr>
+ <td></td>
+ <td>)</td>
+ <td></td><td></td>
+ </tr>
+ </table>
+</div><div class="memdoc">
+<dl class="params"><dt>Parameters</dt><dd>
+ <table class="params">
+ <tr><td class="paramname">x</td><td>Array x </td></tr>
+ <tr><td class="paramname">y</td><td>Array y </td></tr>
+ </table>
+ </dd>
+</dl>
+<dl class="section return"><dt>Returns</dt><dd>Element-wise division of x and y. </dd></dl>
+
+</div>
+</div>
+<a class="anchor" id="acde10964ed23b7c8da515fb84cb8d5e0"></a>
+<div class="memitem">
+<div class="memproto">
+ <table class="memname">
+ <tr>
+ <td class="memname">float8 array_dot </td>
+ <td>(</td>
+ <td class="paramtype">anyarray </td>
+ <td class="paramname"><em>x</em>, </td>
+ </tr>
+ <tr>
+ <td class="paramkey"></td>
+ <td></td>
+ <td class="paramtype">anyarray </td>
+ <td class="paramname"><em>y</em> </td>
+ </tr>
+ <tr>
+ <td></td>
+ <td>)</td>
+ <td></td><td></td>
+ </tr>
+ </table>
+</div><div class="memdoc">
+<dl class="params"><dt>Parameters</dt><dd>
+ <table class="params">
+ <tr><td class="paramname">x</td><td>Array x </td></tr>
+ <tr><td class="paramname">y</td><td>Array y </td></tr>
+ </table>
+ </dd>
+</dl>
+<dl class="section return"><dt>Returns</dt><dd>Dot-product of x and y. </dd></dl>
+
+</div>
+</div>
+<a class="anchor" id="a065a5323f3b742be47e39ad8b4c90fc2"></a>
+<div class="memitem">
+<div class="memproto">
+ <table class="memname">
+ <tr>
+ <td class="memname">anyarray array_fill </td>
+ <td>(</td>
+ <td class="paramtype">anyarray </td>
+ <td class="paramname"><em>x</em>, </td>
+ </tr>
+ <tr>
+ <td class="paramkey"></td>
+ <td></td>
+ <td class="paramtype">anyelement </td>
+ <td class="paramname"><em>k</em> </td>
+ </tr>
+ <tr>
+ <td></td>
+ <td>)</td>
+ <td></td><td></td>
+ </tr>
+ </table>
+</div><div class="memdoc">
+<dl class="params"><dt>Parameters</dt><dd>
+ <table class="params">
+ <tr><td class="paramname">x</td><td>Some array </td></tr>
+ <tr><td class="paramname">k</td><td>Desired value </td></tr>
+ </table>
+ </dd>
+</dl>
+<dl class="section return"><dt>Returns</dt><dd>Fills array with desired value. </dd></dl>
+
+</div>
+</div>
+<a class="anchor" id="ae891429cc50705c530f3e5ca15541849"></a>
+<div class="memitem">
+<div class="memproto">
+ <table class="memname">
+ <tr>
+ <td class="memname">anyelement array_max </td>
+ <td>(</td>
+ <td class="paramtype">anyarray </td>
+ <td class="paramname"><em>x</em></td><td>)</td>
+ <td></td>
+ </tr>
+ </table>
+</div><div class="memdoc">
+<dl class="params"><dt>Parameters</dt><dd>
+ <table class="params">
+ <tr><td class="paramname">x</td><td>Array x </td></tr>
+ </table>
+ </dd>
+</dl>
+<dl class="section return"><dt>Returns</dt><dd>Max of x. </dd></dl>
+
+</div>
+</div>
+<a class="anchor" id="aa415256a9064aecc600dfb5e377fb7b1"></a>
+<div class="memitem">
+<div class="memproto">
+ <table class="memname">
+ <tr>
+ <td class="memname">float8 [] array_max_index </td>
+ <td>(</td>
+ <td class="paramtype">anyarray </td>
+ <td class="paramname"><em>x</em></td><td>)</td>
+ <td></td>
+ </tr>
+ </table>
+</div><div class="memdoc">
+<dl class="params"><dt>Parameters</dt><dd>
+ <table class="params">
+ <tr><td class="paramname">x</td><td>Array x </td></tr>
+ </table>
+ </dd>
+</dl>
+<dl class="section return"><dt>Returns</dt><dd>Array as [max, index]. </dd></dl>
+
+</div>
+</div>
+<a class="anchor" id="a407598f9eb70637798b02fd731bfca2c"></a>
+<div class="memitem">
+<div class="memproto">
+ <table class="memname">
+ <tr>
+ <td class="memname">float8 array_mean </td>
+ <td>(</td>
+ <td class="paramtype">anyarray </td>
+ <td class="paramname"><em>x</em></td><td>)</td>
+ <td></td>
+ </tr>
+ </table>
+</div><div class="memdoc">
+<dl class="params"><dt>Parameters</dt><dd>
+ <table class="params">
+ <tr><td class="paramname">x</td><td>Array x </td></tr>
+ </table>
+ </dd>
+</dl>
+<dl class="section return"><dt>Returns</dt><dd>Mean of x. </dd></dl>
+
+</div>
+</div>
+<a class="anchor" id="a6659bf9d9363eb179fab34f81f8ac59b"></a>
+<div class="memitem">
+<div class="memproto">
+ <table class="memname">
+ <tr>
+ <td class="memname">anyelement array_min </td>
+ <td>(</td>
+ <td class="paramtype">anyarray </td>
+ <td class="paramname"><em>x</em></td><td>)</td>
+ <td></td>
+ </tr>
+ </table>
+</div><div class="memdoc">
+<dl class="params"><dt>Parameters</dt><dd>
+ <table class="params">
+ <tr><td class="paramname">x</td><td>Array x </td></tr>
+ </table>
+ </dd>
+</dl>
+<dl class="section return"><dt>Returns</dt><dd>Min of x. </dd></dl>
+
+</div>
+</div>
+<a class="anchor" id="a813a4d9ffc1c18b1b3e18f6ecdb2051f"></a>
+<div class="memitem">
+<div class="memproto">
+ <table class="memname">
+ <tr>
+ <td class="memname">float8 [] array_min_index </td>
+ <td>(</td>
+ <td class="paramtype">anyarray </td>
+ <td class="paramname"><em>x</em></td><td>)</td>
+ <td></td>
+ </tr>
+ </table>
+</div><div class="memdoc">
+<dl class="params"><dt>Parameters</dt><dd>
+ <table class="params">
+ <tr><td class="paramname">x</td><td>Array x </td></tr>
+ </table>
+ </dd>
+</dl>
+<dl class="section return"><dt>Returns</dt><dd>Array as [min, index]. </dd></dl>
+
+</div>
+</div>
+<a class="anchor" id="a652d70c480d484c4a1a92ded384b0dd7"></a>
+<div class="memitem">
+<div class="memproto">
+ <table class="memname">
+ <tr>
+ <td class="memname">anyarray array_mult </td>
+ <td>(</td>
+ <td class="paramtype">anyarray </td>
+ <td class="paramname"><em>x</em>, </td>
+ </tr>
+ <tr>
+ <td class="paramkey"></td>
+ <td></td>
+ <td class="paramtype">anyarray </td>
+ <td class="paramname"><em>y</em> </td>
+ </tr>
+ <tr>
+ <td></td>
+ <td>)</td>
+ <td></td><td></td>
+ </tr>
+ </table>
+</div><div class="memdoc">
+<dl class="params"><dt>Parameters</dt><dd>
+ <table class="params">
+ <tr><td class="paramname">x</td><td>Array x </td></tr>
+ <tr><td class="paramname">y</td><td>Array y </td></tr>
+ </table>
+ </dd>
+</dl>
+<dl class="section return"><dt>Returns</dt><dd>Element-wise product of x and y. </dd></dl>
+
+</div>
+</div>
+<a class="anchor" id="ab7d8550e66d2e0bd54b8f0997d93880c"></a>
+<div class="memitem">
+<div class="memproto">
+ <table class="memname">
+ <tr>
+ <td class="memname">bigint [] array_of_bigint </td>
+ <td>(</td>
+ <td class="paramtype">integer </td>
+ <td class="paramname"><em>k</em></td><td>)</td>
+ <td></td>
+ </tr>
+ </table>
+</div><div class="memdoc">
+<dl class="params"><dt>Parameters</dt><dd>
+ <table class="params">
+ <tr><td class="paramname">k</td><td>Array size. </td></tr>
+ </table>
+ </dd>
+</dl>
+<dl class="section return"><dt>Returns</dt><dd>Array of size k. </dd></dl>
+
+</div>
+</div>
+<a class="anchor" id="ab066e65a41db78b00b4532996b2a6efc"></a>
+<div class="memitem">
+<div class="memproto">
+ <table class="memname">
+ <tr>
+ <td class="memname">float8 [] array_of_float </td>
+ <td>(</td>
+ <td class="paramtype">integer </td>
+ <td class="paramname"><em>k</em></td><td>)</td>
+ <td></td>
+ </tr>
+ </table>
+</div><div class="memdoc">
+<dl class="params"><dt>Parameters</dt><dd>
+ <table class="params">
+ <tr><td class="paramname">k</td><td>Array size </td></tr>
+ </table>
+ </dd>
+</dl>
+<dl class="section return"><dt>Returns</dt><dd>Array of size k. </dd></dl>
+
+</div>
+</div>
+<a class="anchor" id="ae6881cc5c86941b6ffca35d7f3cd5c12"></a>
+<div class="memitem">
+<div class="memproto">
+ <table class="memname">
+ <tr>
+ <td class="memname">anyarray array_scalar_mult </td>
+ <td>(</td>
+ <td class="paramtype">anyarray </td>
+ <td class="paramname"><em>x</em>, </td>
+ </tr>
+ <tr>
+ <td class="paramkey"></td>
+ <td></td>
+ <td class="paramtype">anyelement </td>
+ <td class="paramname"><em>k</em> </td>
+ </tr>
+ <tr>
+ <td></td>
+ <td>)</td>
+ <td></td><td></td>
+ </tr>
+ </table>
+</div><div class="memdoc">
+<dl class="params"><dt>Parameters</dt><dd>
+ <table class="params">
+ <tr><td class="paramname">x</td><td>Array x </td></tr>
+ <tr><td class="paramname">k</td><td>Scalar </td></tr>
+ </table>
+ </dd>
+</dl>
+<dl class="section return"><dt>Returns</dt><dd>Array with each element of x multiplied by scalar. </dd></dl>
+
+</div>
+</div>
+<a class="anchor" id="a3b6c2d173a611e6d6b184d825c2b336d"></a>
+<div class="memitem">
+<div class="memproto">
+ <table class="memname">
+ <tr>
+ <td class="memname">float8 array_stddev </td>
+ <td>(</td>
+ <td class="paramtype">anyarray </td>
+ <td class="paramname"><em>x</em></td><td>)</td>
+ <td></td>
+ </tr>
+ </table>
+</div><div class="memdoc">
+<dl class="params"><dt>Parameters</dt><dd>
+ <table class="params">
+ <tr><td class="paramname">x</td><td>Array x </td></tr>
+ </table>
+ </dd>
+</dl>
+<dl class="section return"><dt>Returns</dt><dd>Standard deviation of x. </dd></dl>
+
+</div>
+</div>
+<a class="anchor" id="a2875a161a01c7dcdea9a4997b074eefc"></a>
+<div class="memitem">
+<div class="memproto">
+ <table class="memname">
+ <tr>
+ <td class="memname">anyarray array_sub </td>
+ <td>(</td>
+ <td class="paramtype">anyarray </td>
+ <td class="paramname"><em>x</em>, </td>
+ </tr>
+ <tr>
+ <td class="paramkey"></td>
+ <td></td>
+ <td class="paramtype">anyarray </td>
+ <td class="paramname"><em>y</em> </td>
+ </tr>
+ <tr>
+ <td></td>
+ <td>)</td>
+ <td></td><td></td>
+ </tr>
+ </table>
+</div><div class="memdoc">
+<dl class="params"><dt>Parameters</dt><dd>
+ <table class="params">
+ <tr><td class="paramname">x</td><td>Array x </td></tr>
+ <tr><td class="paramname">y</td><td>Array y </td></tr>
+ </table>
+ </dd>
+</dl>
+<dl class="section return"><dt>Returns</dt><dd>x-y. </dd></dl>
+
+</div>
+</div>
+<a class="anchor" id="a4c98f20e6a737358806f63318daea5ec"></a>
+<div class="memitem">
+<div class="memproto">
+ <table class="memname">
+ <tr>
+ <td class="memname">anyelement array_sum </td>
+ <td>(</td>
+ <td class="paramtype">anyarray </td>
+ <td class="paramname"><em>x</em></td><td>)</td>
+ <td></td>
+ </tr>
+ </table>
+</div><div class="memdoc">
+<dl class="params"><dt>Parameters</dt><dd>
+ <table class="params">
+ <tr><td class="paramname">x</td><td>Array x </td></tr>
+ </table>
+ </dd>
+</dl>
+<dl class="section return"><dt>Returns</dt><dd>Sum of x. </dd></dl>
+
+</div>
+</div>
+<a class="anchor" id="a418de59800833aa95f9b7cbd6b12901c"></a>
+<div class="memitem">
+<div class="memproto">
+ <table class="memname">
+ <tr>
+ <td class="memname">float8 array_sum_big </td>
+ <td>(</td>
+ <td class="paramtype">anyarray </td>
+ <td class="paramname"><em>x</em></td><td>)</td>
+ <td></td>
+ </tr>
+ </table>
+</div><div class="memdoc">
+<dl class="params"><dt>Parameters</dt><dd>
+ <table class="params">
+ <tr><td class="paramname">x</td><td>Array x </td></tr>
+ </table>
+ </dd>
+</dl>
+<dl class="section return"><dt>Returns</dt><dd>Sum of x. </dd></dl>
+
+</div>
+</div>
+<a class="anchor" id="a26e8508a2bae10a6574cec697a270eea"></a>
+<div class="memitem">
+<div class="memproto">
+ <table class="memname">
+ <tr>
+ <td class="memname">aggregate anyarray sum </td>
+ <td>(</td>
+ <td class="paramtype">anyarray </td>
+ <td class="paramname"></td><td>)</td>
+ <td></td>
+ </tr>
+ </table>
+</div><div class="memdoc">
+<dl class="params"><dt>Parameters</dt><dd>
+ <table class="params">
+ <tr><td class="paramname">x</td><td>Array x </td></tr>
+ <tr><td class="paramname">y</td><td>Array y </td></tr>
+ </table>
+ </dd>
+</dl>
+<dl class="section return"><dt>Returns</dt><dd>Sum of x and y. </dd></dl>
+
+</div>
+</div>
+</div><!-- contents -->
+</div><!-- doc-content -->
+<!-- start footer part -->
+<div id="nav-path" class="navpath"><!-- id is needed for treeview function! -->
+ <ul>
+ <li class="navelem"><a class="el" href="dir_704eb8350b43e1ca74c0f90ed1ba450e.html">methods</a></li><li class="navelem"><a class="el" href="dir_834e55cf992733df24fbe86b49356157.html">array_ops</a></li><li class="navelem"><a class="el" href="dir_c8a9890f716ab6621b63d44c36a168eb.html">src</a></li><li class="navelem"><a class="el" href="dir_fe647384fff178c2cff5ce75fb4044e5.html">pg_gp</a></li><li class="navelem"><a class="el" href="array__ops_8sql__in.html">array_ops.sql_in</a></li>
+ <li class="footer">Generated on Mon Jul 27 2015 20:37:45 for MADlib by
+ <a href="http://www.doxygen.org/index.html">
+ <img class="footer" src="doxygen.png" alt="doxygen"/></a> 1.8.10 </li>
+ </ul>
+</div>
+</body>
+</html>
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+<title>MADlib: assoc_rules.sql_in File Reference</title>
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+ <td id="projectlogo"><a href="http://madlib.incubator.apache.org"><img alt="Logo" src="madlib.png" height="50" style="padding-left:0.5em;" border="0"/ ></a></td>
+ <td style="padding-left: 0.5em;">
+ <div id="projectname">
+ <span id="projectnumber">1.8</span>
+ </div>
+ <div id="projectbrief">User Documentation for MADlib</div>
+ </td>
+ <td> <div id="MSearchBox" class="MSearchBoxInactive">
+ <span class="left">
+ <img id="MSearchSelect" src="search/mag_sel.png"
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+<a href="#func-members">Functions</a> </div>
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+<div class="title">assoc_rules.sql_in File Reference</div> </div>
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+
+<p>The <a class="el" href="assoc__rules_8sql__in.html#a68a256d98b82ac15bac7df92e806f6f8">assoc_rules</a> function computes association rules for a given set of data. The data is assumed to have two dimensions; items (between which we are trying to discover associations), and a transaction id. This tranaction id groups the items by event and could also be a user id, date, etc. depending on the context of the data. This function assumes the data is stored in two columns with one transaction id and one item per row.
+<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:a9a872579615586ce478d32ba145cc279"><td class="memItemLeft" align="right" valign="top">set< text[]> </td><td class="memItemRight" valign="bottom"><a class="el" href="assoc__rules_8sql__in.html#a9a872579615586ce478d32ba145cc279">gen_rules_from_cfp</a> (text, int)</td></tr>
+<tr class="separator:a9a872579615586ce478d32ba145cc279"><td class="memSeparator" colspan="2"> </td></tr>
+<tr class="memitem:af9456adb6dad01e452415b9a0a5371dc"><td class="memItemLeft" align="right" valign="top">assoc_rules_results </td><td class="memItemRight" valign="bottom"><a class="el" href="assoc__rules_8sql__in.html#af9456adb6dad01e452415b9a0a5371dc">assoc_rules</a> (float8 support, float8 confidence, text tid_col, text item_col, text input_table, text output_schema, boolean verbose)</td></tr>
+<tr class="separator:af9456adb6dad01e452415b9a0a5371dc"><td class="memSeparator" colspan="2"> </td></tr>
+<tr class="memitem:a68a256d98b82ac15bac7df92e806f6f8"><td class="memItemLeft" align="right" valign="top">assoc_rules_results </td><td class="memItemRight" valign="bottom"><a class="el" href="assoc__rules_8sql__in.html#a68a256d98b82ac15bac7df92e806f6f8">assoc_rules</a> (float8 support, float8 confidence, text tid_col, text item_col, text input_table, text output_schema)</td></tr>
+<tr class="memdesc:a68a256d98b82ac15bac7df92e806f6f8"><td class="mdescLeft"> </td><td class="mdescRight">The short form of the above function with vobose removed. <a href="#a68a256d98b82ac15bac7df92e806f6f8">More...</a><br /></td></tr>
+<tr class="separator:a68a256d98b82ac15bac7df92e806f6f8"><td class="memSeparator" colspan="2"> </td></tr>
+</table>
+<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
+<div class="textblock"><dl class="section date"><dt>Date</dt><dd>June 2011 </dd>
+<dd>
+August 2012</dd></dl>
+<dl class="section see"><dt>See also</dt><dd>For a brief introduction to the association rules implementation, see the module description <a class="el" href="group__grp__assoc__rules.html">Apriori Algorithm</a>. </dd></dl>
+</div><h2 class="groupheader">Function Documentation</h2>
+<a class="anchor" id="af9456adb6dad01e452415b9a0a5371dc"></a>
+<div class="memitem">
+<div class="memproto">
+ <table class="memname">
+ <tr>
+ <td class="memname">assoc_rules_results assoc_rules </td>
+ <td>(</td>
+ <td class="paramtype">float8 </td>
+ <td class="paramname"><em>support</em>, </td>
+ </tr>
+ <tr>
+ <td class="paramkey"></td>
+ <td></td>
+ <td class="paramtype">float8 </td>
+ <td class="paramname"><em>confidence</em>, </td>
+ </tr>
+ <tr>
+ <td class="paramkey"></td>
+ <td></td>
+ <td class="paramtype">text </td>
+ <td class="paramname"><em>tid_col</em>, </td>
+ </tr>
+ <tr>
+ <td class="paramkey"></td>
+ <td></td>
+ <td class="paramtype">text </td>
+ <td class="paramname"><em>item_col</em>, </td>
+ </tr>
+ <tr>
+ <td class="paramkey"></td>
+ <td></td>
+ <td class="paramtype">text </td>
+ <td class="paramname"><em>input_table</em>, </td>
+ </tr>
+ <tr>
+ <td class="paramkey"></td>
+ <td></td>
+ <td class="paramtype">text </td>
+ <td class="paramname"><em>output_schema</em>, </td>
+ </tr>
+ <tr>
+ <td class="paramkey"></td>
+ <td></td>
+ <td class="paramtype">boolean </td>
+ <td class="paramname"><em>verbose</em> </td>
+ </tr>
+ <tr>
+ <td></td>
+ <td>)</td>
+ <td></td><td></td>
+ </tr>
+ </table>
+</div><div class="memdoc">
+<dl class="params"><dt>Parameters</dt><dd>
+ <table class="params">
+ <tr><td class="paramname">support</td><td>minimum level of support needed for each itemset to be included in result </td></tr>
+ <tr><td class="paramname">confidence</td><td>minimum level of confidence needed for each rule to be included in result </td></tr>
+ <tr><td class="paramname">tid_col</td><td>name of the column storing the transaction ids </td></tr>
+ <tr><td class="paramname">item_col</td><td>name of the column storing the products </td></tr>
+ <tr><td class="paramname">input_table</td><td>name of the table where the data is stored </td></tr>
+ <tr><td class="paramname">output_schema</td><td>name of the schema where the final results will be stored </td></tr>
+ <tr><td class="paramname">verbose</td><td>determining if output contains comments</td></tr>
+ </table>
+ </dd>
+</dl>
+<dl class="section return"><dt>Returns</dt><dd>The schema and table name containing association rules, and total number of rules found.</dd></dl>
+<p>This function computes the association rules between products in a data set. It reads the name of the table, the column names of the product and ids, and computes ssociation rules using the Apriori algorithm, and subject to the support and confidence constraints as input by the user. This version of association rules has verbose functionality. When verbose is true, output of function includes iteration steps and comments on Apriori algorithm steps. </p>
+
+</div>
+</div>
+<a class="anchor" id="a68a256d98b82ac15bac7df92e806f6f8"></a>
+<div class="memitem">
+<div class="memproto">
+ <table class="memname">
+ <tr>
+ <td class="memname">assoc_rules_results assoc_rules </td>
+ <td>(</td>
+ <td class="paramtype">float8 </td>
+ <td class="paramname"><em>support</em>, </td>
+ </tr>
+ <tr>
+ <td class="paramkey"></td>
+ <td></td>
+ <td class="paramtype">float8 </td>
+ <td class="paramname"><em>confidence</em>, </td>
+ </tr>
+ <tr>
+ <td class="paramkey"></td>
+ <td></td>
+ <td class="paramtype">text </td>
+ <td class="paramname"><em>tid_col</em>, </td>
+ </tr>
+ <tr>
+ <td class="paramkey"></td>
+ <td></td>
+ <td class="paramtype">text </td>
+ <td class="paramname"><em>item_col</em>, </td>
+ </tr>
+ <tr>
+ <td class="paramkey"></td>
+ <td></td>
+ <td class="paramtype">text </td>
+ <td class="paramname"><em>input_table</em>, </td>
+ </tr>
+ <tr>
+ <td class="paramkey"></td>
+ <td></td>
+ <td class="paramtype">text </td>
+ <td class="paramname"><em>output_schema</em> </td>
+ </tr>
+ <tr>
+ <td></td>
+ <td>)</td>
+ <td></td><td></td>
+ </tr>
+ </table>
+</div><div class="memdoc">
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+ <td class="memname">set<text[]> gen_rules_from_cfp </td>
+ <td>(</td>
+ <td class="paramtype">text </td>
+ <td class="paramname">, </td>
+ </tr>
+ <tr>
+ <td class="paramkey"></td>
+ <td></td>
+ <td class="paramtype">int </td>
+ <td class="paramname"> </td>
+ </tr>
+ <tr>
+ <td></td>
+ <td>)</td>
+ <td></td><td></td>
+ </tr>
+ </table>
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