# Table Processing

The block allows you to remove duplicate rows and select only specified columns.

<table data-header-hidden><thead><tr><th width="264" valign="top"></th><th width="304" valign="top"></th></tr></thead><tbody><tr><td valign="top">Table</td><td valign="top">[Data Table] The data table that needs to be sorted.</td></tr><tr><td valign="top">Remove duplicate rows</td><td valign="top">When enabled, the returned table will contain rows with different values for all columns.</td></tr><tr><td valign="top">Return columns</td><td valign="top"><p>[Text/List] A string containing the names or indices of the columns. The separator is a comma.</p><p>A list of column names that should be included in the returned Data Table object. The Data Table object containing the specified columns in the order they appear within the array.</p></td></tr><tr><td valign="top">Result</td><td valign="top">[Data Table] A table is returned that contains the requested rows and columns.</td></tr><tr><td valign="top">Error handling level</td><td valign="top"><p>Select the error handling level. Possible values:</p><ul><li>"Default" - by default;</li><li>"Ignore" - errors are ignored;</li><li>"Handle" - errors are handled.</li></ul><p>If "Default" is selected, the value from the "Start" block of this diagram will be used.</p></td></tr><tr><td valign="top">Message level</td><td valign="top"><p>Select the message level that blocks will output during operation. Possible values:</p><ul><li>"Default" - by default;</li><li>"Release" - output is disabled;</li><li>"Debug" - outputs main information;</li><li>"Detailed" - outputs detailed information.</li></ul><p>If "Default" is selected, the value from the "Start" block of this diagram will be used.</p></td></tr><tr><td valign="top">Error text</td><td valign="top">[Text] Returns detailed information about the error in case of incorrect execution of the block's work.</td></tr></tbody></table>


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