Athena Query

Overview

You can use this Snap to execute SQL queries on data stored in Amazon S3 using Amazon Athena.


Athena Query Overview

Prerequisites

None.

Known issues

  • ARRAY, STRUCT, and MAP data types are not supported in SELECT queries. If used, it may result in incorrect values in the output documents.
  • This Snap can fail on a table created with ORC files in LZO compression because of an Athena service defect.

Snap views

View Description Examples of upstream and downstream Snaps
Input This Snap atmost has one document input view.
Output This Snap atmost has one document output view that provides the result of the Athena query execution.
Error

Error handling is a generic way to handle errors without losing data or failing the Snap execution. You can handle the errors that the Snap might encounter when running the pipeline by choosing one of the following options from the When errors occur list under the Views tab. The available options are:

  • Stop Pipeline Execution Stops the current pipeline execution when an error occurs.
  • Discard Error Data and Continue Ignores the error, discards that record, and continues with the remaining records.
  • Route Error Data to Error View Routes the error data to an error view without stopping the Snap execution.

Learn more about Error handling in Pipelines.

Snap settings

Legend:
  • Expression icon (): JavaScript syntax to access SnapLogic Expressions to set field values dynamically (if enabled). If disabled, you can provide a static value. Learn more.
  • SnapGPT (): Generates SnapLogic Expressions based on natural language using SnapGPT. Learn more.
  • Suggestion icon (): Populates a list of values dynamically based on your Account configuration.
  • Upload : Uploads files. Learn more.
Learn more about the icons in the Snap settings dialog.
Field / field set Type Description
Label String

Required. Specify a unique name for the Snap. Modify this to be more appropriate, especially if more than one of the same Snaps is in the pipeline.

Default value: Athena Query

Example: Athena Query data
Database String/Expression/Suggestion Specify the name of Athena database, that is a logical grouping of Athena tables.
Tip: This field can be left blank if the query contains the name of Athena database.

Default value: N/A

Example: mydatabase
Query String/Expression Required. Specify the SQL query to be executed by Athena. Ensure the query follows the syntax supported by Amazon Athena and references data stored in S3. Learn more.

Default value: N/A

Example: SELECT * FROM mytable
Maximum retries Integer/Expression Required. Specify the maximum number of retry attempts.

Default value: 3

Example: 10
Snap execution Dropdown list
Select one of the three modes in which the Snap executes. Available options are:
  • Validate & Execute: Performs limited execution of the Snap and generates a data preview during pipeline validation. Subsequently, performs full execution of the Snap (unlimited records) during pipeline runtime.
  • Execute only: Performs full execution of the Snap during pipeline execution without generating preview data.
  • Disabled: Disables the Snap and all Snaps that are downstream from it.

Default value: Execute only

Default value: Validate & Execute