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# gpudb::FilterByValueRequest

> gpudb::FilterByValueRequest — Kinetica C++ API

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    <p>A set of parameters for <a className="el" href="/content/api/cpp/classgpudb_1_1GPUdb#adf1643ba8a5fb03eaf47c8991c004a4c">GPUdb::filterByValue</a>. <a href="#details">More...</a></p>
    <p><code>#include \<<a className="el" href="/content/api/cpp/filter__by__value_8h_source">gpudb/protocol/filter\_by\_value.h</a>></code></p>

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        <td className="memItemLeft" align="right" valign="top"> </td>
        <td className="memItemRight" valign="bottom"><a className="el" href="#aa0376e05844b7ce3714826b76b39795f">FilterByValueRequest</a> ()</td>
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        <td className="mdescLeft"> </td>
        <td className="mdescRight">Constructs a <a className="el" href="/content/api/cpp/structgpudb_1_1FilterByValueRequest" title="A set of parameters for GPUdb::filterByValue.">FilterByValueRequest</a> object with default parameters. <br /></td>
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        <td className="memItemRight" valign="bottom"><a className="el" href="#aa1f1e302a371c6ef591a5f83f7984321">FilterByValueRequest</a> (const std::string \&tableName\_, const std::string \&viewName\_, const bool isString\_, const double value\_, const std::string \&valueStr\_, const std::string \&columnName\_, const std::map\< std::string, std::string > \&options\_)</td>
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        <td className="mdescLeft"> </td>
        <td className="mdescRight">Constructs a <a className="el" href="/content/api/cpp/structgpudb_1_1FilterByValueRequest" title="A set of parameters for GPUdb::filterByValue.">FilterByValueRequest</a> object with the specified parameters. <br /></td>
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        <td className="mdescRight">Name of an existing table on which to perform the calculation, in \[ schema\_name. ]table\_name format, using standard <a href="/content/concepts/tables/#table-name-resolution" target="_top">name resolution rules</a>. <br /></td>
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        <td className="memItemRight" valign="bottom"><a className="el" href="#aa065ca1e9fc79721624b31a2646b8cc8">viewName</a></td>
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        <td className="mdescRight">If provided, then this will be the name of the view containing the results, in \[ schema\_name. ]view\_name format, using standard <a href="/content/concepts/tables/#table-name-resolution" target="_top">name resolution rules</a> and meeting <a href="/content/concepts/tables/#table-naming-criteria" target="_top">table naming criteria</a>. <br /></td>
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        <td className="memItemLeft" align="right" valign="top">bool </td>
        <td className="memItemRight" valign="bottom"><a className="el" href="#ab825cd4f44e73135255187fd0baf2abc">isString</a></td>
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        <td className="mdescLeft"> </td>
        <td className="mdescRight">Indicates whether the value being searched for is string or numeric. <br /></td>
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        <td className="memItemLeft" align="right" valign="top">double </td>
        <td className="memItemRight" valign="bottom"><a className="el" href="#adfed8a380981bbc3e2bf212e6657d0bc">value</a></td>
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        <td className="mdescLeft"> </td>
        <td className="mdescRight">The value to search for. <br /></td>
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        <td className="memItemLeft" align="right" valign="top">std::string </td>
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        <td className="mdescRight">The string value to search for. <br /></td>
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        <td className="memItemRight" valign="bottom"><a className="el" href="#a93efc7b49b9903fb8e130a5fb44a6d1e">columnName</a></td>
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        <td className="mdescLeft"> </td>
        <td className="mdescRight">Name of a column on which the filter by value would be applied. <br /></td>
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        <td className="memItemLeft" align="right" valign="top">std::map\< std::string, std::string > </td>
        <td className="memItemRight" valign="bottom"><a className="el" href="#a201f2444794aceb8b4dc8198722d1a53">options</a></td>
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        <td className="mdescLeft"> </td>
        <td className="mdescRight">Optional parameters. <br /></td>
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    <h2 className="groupheader">Detailed Description</h2>

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      <p>A set of parameters for <a className="el" href="/content/api/cpp/classgpudb_1_1GPUdb#adf1643ba8a5fb03eaf47c8991c004a4c">GPUdb::filterByValue</a>. </p>
      <p>Calculates which objects from a table has a particular value for a particular column. The input parameters provide a way to specify either a String or a Double valued column and a desired value for the column on which the filter is performed. The operation is synchronous, meaning that a response will not be returned until all the objects are fully available. The response payload provides the count of the resulting set. A new result view which satisfies the input filter restriction specification is also created with a view name passed in as part of the input payload. Although this functionality can also be accomplished with the standard filter function, it is more efficient. </p>
      <p className="definition">Definition at line <a className="el" href="/content/api/cpp/filter__by__value_8h_source#l00027">27</a> of file <a className="el" href="/content/api/cpp/filter__by__value_8h_source">filter\_by\_value.h</a>.</p>
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    <h2 className="groupheader">Constructor & Destructor Documentation</h2>
    <h2 className="memtitle"><span className="permalink"><a href="#aa0376e05844b7ce3714826b76b39795f">◆ </a></span>FilterByValueRequest() <span className="overload">\[1/2]</span></h2>

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                  <td className="memname">gpudb::FilterByValueRequest::FilterByValueRequest </td>
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        <p>Constructs a <a className="el" href="/content/api/cpp/structgpudb_1_1FilterByValueRequest" title="A set of parameters for GPUdb::filterByValue.">FilterByValueRequest</a> object with default parameters. </p>
        <p className="definition">Definition at line <a className="el" href="/content/api/cpp/filter__by__value_8h_source#l00032">32</a> of file <a className="el" href="/content/api/cpp/filter__by__value_8h_source">filter\_by\_value.h</a>.</p>
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    <h2 className="memtitle"><span className="permalink"><a href="#aa1f1e302a371c6ef591a5f83f7984321">◆ </a></span>FilterByValueRequest() <span className="overload">\[2/2]</span></h2>

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        <p>Constructs a <a className="el" href="/content/api/cpp/structgpudb_1_1FilterByValueRequest" title="A set of parameters for GPUdb::filterByValue.">FilterByValueRequest</a> object with the specified parameters. </p>

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                <td className="paramdir">\[in]</td>
                <td className="paramname">tableName\_</td>
                <td>Name of an existing table on which to perform the calculation, in \[schema\_name.]table\_name format, using standard <a href="/content/concepts/tables/#table-name-resolution" target="_top">name resolution rules</a>. </td>
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                <td className="paramdir">\[in]</td>
                <td className="paramname">viewName\_</td>
                <td>If provided, then this will be the name of the view containing the results, in \[schema\_name.]view\_name format, using standard <a href="/content/concepts/tables/#table-name-resolution" target="_top">name resolution rules</a> and meeting <a href="/content/concepts/tables/#table-naming-criteria" target="_top">table naming criteria</a>. Must not be an already existing table or view. The default value is ''. </td>
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                <td>Indicates whether the value being searched for is string or numeric. </td>
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                <td>The value to search for. The default value is 0. </td>
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                <td>The string value to search for. The default value is ''. </td>
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                <td>Name of a column on which the filter by value would be applied. </td>
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                  Optional parameters.

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                      <a className="el" href="/content/api/cpp/namespacegpudb#ad8d0e2db24b84f13c1b6a4cf1da8344a">filter\_by\_value\_create\_temp\_table</a>: If <a className="el" href="/content/api/cpp/namespacegpudb#a0c9fc58a0c48f653739b15c9edee8e98">true</a>, a unique temporary table name will be generated in the sys\_temp schema and used in place of <span className="em arg">viewName\_</span>. This is always allowed even if the caller does not have permission to create tables. The generated name is returned in <a className="el" href="/content/api/cpp/namespacegpudb#a6a03ad0d8c3320605cb7561f596a4cc7">qualified\_view\_name</a>. Supported values:

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                        <li> <a className="el" href="/content/api/cpp/namespacegpudb#a0c9fc58a0c48f653739b15c9edee8e98">filter\_by\_value\_true</a> </li>
                        <li> <a className="el" href="/content/api/cpp/namespacegpudb#a77a87ad5044068fc0073e5c3d2fcab75">filter\_by\_value\_false</a> </li>
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                      The default value is <a className="el" href="/content/api/cpp/namespacegpudb#a77a87ad5044068fc0073e5c3d2fcab75">filter\_by\_value\_false</a>.
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                    <li> <a className="el" href="/content/api/cpp/namespacegpudb#aaa6f5bdc2db2936498af3101c7d30809">filter\_by\_value\_collection\_name</a>: \[DEPRECATED–please specify the containing schema for the view as part of <span className="em arg">viewName\_</span> and use <a className="el" href="/content/api/cpp/classgpudb_1_1GPUdb#a4aa5990ebebfab30b5961654f546cfd0">GPUdb::createSchema</a> to create the schema if non-existent] Name of a schema for the newly created view. If the schema is non-existent, it will be automatically created. </li>
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                  The default value is an empty map.
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        <p className="definition">Definition at line <a className="el" href="/content/api/cpp/filter__by__value_8h_source#l00112">112</a> of file <a className="el" href="/content/api/cpp/filter__by__value_8h_source">filter\_by\_value.h</a>.</p>
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    <h2 className="memtitle"><span className="permalink"><a href="#a93efc7b49b9903fb8e130a5fb44a6d1e">◆ </a></span>columnName</h2>

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        <p>Name of a column on which the filter by value would be applied. </p>
        <p className="definition">Definition at line <a className="el" href="/content/api/cpp/filter__by__value_8h_source#l00160">160</a> of file <a className="el" href="/content/api/cpp/filter__by__value_8h_source">filter\_by\_value.h</a>.</p>
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        <p>Indicates whether the value being searched for is string or numeric. </p>
        <p className="definition">Definition at line <a className="el" href="/content/api/cpp/filter__by__value_8h_source#l00145">145</a> of file <a className="el" href="/content/api/cpp/filter__by__value_8h_source">filter\_by\_value.h</a>.</p>
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        <p>Optional parameters. </p>

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            <a className="el" href="/content/api/cpp/namespacegpudb#ad8d0e2db24b84f13c1b6a4cf1da8344a">filter\_by\_value\_create\_temp\_table</a>: If <a className="el" href="/content/api/cpp/namespacegpudb#a0c9fc58a0c48f653739b15c9edee8e98">true</a>, a unique temporary table name will be generated in the sys\_temp schema and used in place of <a className="el" href="#aa065ca1e9fc79721624b31a2646b8cc8">viewName</a>. This is always allowed even if the caller does not have permission to create tables. The generated name is returned in <a className="el" href="/content/api/cpp/namespacegpudb#a6a03ad0d8c3320605cb7561f596a4cc7">qualified\_view\_name</a>. Supported values:

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              <li> <a className="el" href="/content/api/cpp/namespacegpudb#a0c9fc58a0c48f653739b15c9edee8e98">filter\_by\_value\_true</a> </li>
              <li> <a className="el" href="/content/api/cpp/namespacegpudb#a77a87ad5044068fc0073e5c3d2fcab75">filter\_by\_value\_false</a> </li>
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            The default value is <a className="el" href="/content/api/cpp/namespacegpudb#a77a87ad5044068fc0073e5c3d2fcab75">filter\_by\_value\_false</a>.
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          <li> <a className="el" href="/content/api/cpp/namespacegpudb#aaa6f5bdc2db2936498af3101c7d30809">filter\_by\_value\_collection\_name</a>: \[DEPRECATED–please specify the containing schema for the view as part of <a className="el" href="#aa065ca1e9fc79721624b31a2646b8cc8">viewName</a> and use <a className="el" href="/content/api/cpp/classgpudb_1_1GPUdb#a4aa5990ebebfab30b5961654f546cfd0">GPUdb::createSchema</a> to create the schema if non-existent] Name of a schema for the newly created view. If the schema is non-existent, it will be automatically created. </li>
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        <p>The default value is an empty map. </p>
        <p className="definition">Definition at line <a className="el" href="/content/api/cpp/filter__by__value_8h_source#l00194">194</a> of file <a className="el" href="/content/api/cpp/filter__by__value_8h_source">filter\_by\_value.h</a>.</p>
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        <p>Name of an existing table on which to perform the calculation, in \[ schema\_name. ]table\_name format, using standard <a href="/content/concepts/tables/#table-name-resolution" target="_top">name resolution rules</a>. </p>
        <p className="definition">Definition at line <a className="el" href="/content/api/cpp/filter__by__value_8h_source#l00129">129</a> of file <a className="el" href="/content/api/cpp/filter__by__value_8h_source">filter\_by\_value.h</a>.</p>
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        <p>The value to search for. </p>
        <p>The default value is 0. </p>
        <p className="definition">Definition at line <a className="el" href="/content/api/cpp/filter__by__value_8h_source#l00150">150</a> of file <a className="el" href="/content/api/cpp/filter__by__value_8h_source">filter\_by\_value.h</a>.</p>
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    <h2 className="memtitle"><span className="permalink"><a href="#a8070930603c25e5af07b1da27ab786ee">◆ </a></span>valueStr</h2>

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            <td className="memname">std::string gpudb::FilterByValueRequest::valueStr</td>
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        <p>The string value to search for. </p>
        <p>The default value is ''. </p>
        <p className="definition">Definition at line <a className="el" href="/content/api/cpp/filter__by__value_8h_source#l00155">155</a> of file <a className="el" href="/content/api/cpp/filter__by__value_8h_source">filter\_by\_value.h</a>.</p>
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    <h2 className="memtitle"><span className="permalink"><a href="#aa065ca1e9fc79721624b31a2646b8cc8">◆ </a></span>viewName</h2>

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            <td className="memname">std::string gpudb::FilterByValueRequest::viewName</td>
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        <p>If provided, then this will be the name of the view containing the results, in \[ schema\_name. ]view\_name format, using standard <a href="/content/concepts/tables/#table-name-resolution" target="_top">name resolution rules</a> and meeting <a href="/content/concepts/tables/#table-naming-criteria" target="_top">table naming criteria</a>. </p>
        <p>Must not be an already existing table or view. The default value is ''. </p>
        <p className="definition">Definition at line <a className="el" href="/content/api/cpp/filter__by__value_8h_source#l00140">140</a> of file <a className="el" href="/content/api/cpp/filter__by__value_8h_source">filter\_by\_value.h</a>.</p>
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    The documentation for this struct was generated from the following file:

    <ul>
      <li>gpudb/protocol/<a className="el" href="/content/api/cpp/filter__by__value_8h_source">filter\_by\_value.h</a></li>
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