# CSV
<a name="API_CSV"></a>

The `CSV` processor parses comma-separated values (CSV) from the log events into columns.

For more information about this processor including examples, see [ csv](https://docs.aws.amazon.com/AmazonCloudWatch/latest/logs/CloudWatch-Logs-Transformation.html#CloudWatch-Logs-Transformation-csv) in the *CloudWatch Logs User Guide*.

## Contents
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 ** columns **   <a name="CWL-Type-CSV-columns"></a>
An array of names to use for the columns in the transformed log event.  
If you omit this, default column names (`[column_1, column_2 ...]`) are used.  
Type: Array of strings  
Array Members: Maximum number of 100 items.  
Length Constraints: Minimum length of 1. Maximum length of 128.  
Required: No

 ** delimiter **   <a name="CWL-Type-CSV-delimiter"></a>
The character used to separate each column in the original comma-separated value log event. If you omit this, the processor looks for the comma `,` character as the delimiter.  
Type: String  
Length Constraints: Minimum length of 1. Maximum length of 2.  
Required: No

 ** destination **   <a name="CWL-Type-CSV-destination"></a>
The path to the parent field to put transformed key value pairs under. If you omit this value, the key value pairs will be placed under the root node.  
Type: String  
Length Constraints: Minimum length of 1. Maximum length of 128.  
Required: No

 ** quoteCharacter **   <a name="CWL-Type-CSV-quoteCharacter"></a>
The character used used as a text qualifier for a single column of data. If you omit this, the double quotation mark `"` character is used.  
Type: String  
Length Constraints: Fixed length of 1.  
Required: No

 ** source **   <a name="CWL-Type-CSV-source"></a>
The path to the field in the log event that has the comma separated values to be parsed. If you omit this value, the whole log message is processed.  
Type: String  
Length Constraints: Minimum length of 1. Maximum length of 128.  
Required: No

## See Also
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For more information about using this API in one of the language-specific AWS SDKs, see the following:
+  [AWS SDK for C\$1\$1](https://docs.aws.amazon.com/goto/SdkForCpp/logs-2014-03-28/CSV) 
+  [AWS SDK for Java V2](https://docs.aws.amazon.com/goto/SdkForJavaV2/logs-2014-03-28/CSV) 
+  [AWS SDK for Ruby V3](https://docs.aws.amazon.com/goto/SdkForRubyV3/logs-2014-03-28/CSV)