Athena string to timestamp

This article looks at how to use Amazon Athena with a column which contains dates in multiple different formats. The sections below work through step-by-step how we get to our solution. To start with we need some sample data containing dates in a variety of formats.

We can use this to test our date parsing code on. The syntax is:. Using try will remove the error and allow the query to execute, but still won't convert the dates in the non-conforming formats we'll get there though.

Presto/Athena Examples: Date and Datetime functions

The query below also includes an additional column to assist with identifying which dates were successfully converted. The coalesce conditional expression returns the first non-null value. Using this you can support a wide range of custom date formats without causing errors in your query. This website is copyrightMohawk Technologies Ltd. No content on this website may be reproduced without prior written consent. Technical articles on this site should be used for reference purposes only and no legal guarantee is being made as to fitness for any purpose, often content is aimed at demonstrating a concept and may not be suitable for use in a production environment.

All third party trademarks are the property of their respective owners. Cloud Junkie. Sample Data for Testing To start with we need some sample data containing dates in a variety of formats. Supported Format Strings.

athena string to timestamp

Converting Multiple Different Formats Initial Error Using the same query as above, but with the full test data, will result in an error. Using Coalesce to Support Additional Formats. Searching 1.If you've got a moment, please tell us what we did right so we can do more of it. Thanks for letting us know this page needs work. We're sorry we let you down.

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If you've got a moment, please tell us how we can make the documentation better. When you create a table from CSV data in Athena, determine what types of values it contains:. If data does not contain values enclosed in double quotes "you can omit specifying any SerDe. Uses double quotes " as the default quote character, and allows you to specify separator, quote, and escape characters, such as:. See the example in this topic.

athena string to timestamp

Does not support empty fields in columns defined as a numeric data type. To further convert columns to the desired type in a table, you can create a view over the table and use CAST to convert to the desired type.

The parser does not recognize empty or null values in columns defined as a numeric data type, leaving them as the default data type of STRING. Does not support DATE in another format. The following statement creates a table in Athena from the specified Amazon S3 bucket location. CSV SerDe. Desaturated from original. Javascript is disabled or is unavailable in your browser.

Please refer to your browser's Help pages for instructions. Did this page help you? Thanks for letting us know we're doing a good job! Consider the following test data:. Document Conventions. CloudTrail SerDe.By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service.

The dark mode beta is finally here. Change your preferences any time. Stack Overflow for Teams is a private, secure spot for you and your coworkers to find and share information. This seems odd to me.

Is there an error in my query or is Athena not able to handle greater than operators on date columns? You need to use a cast to format the date correctly before making this comparison. Try the following:. Learn more. Athena greater than condition in date column Ask Question. Asked 1 year, 9 months ago. Active 8 months ago.

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Viewed 21k times. I have the following query that I am trying to run on Athena. Piotr Findeisen Active Oldest Votes. Barry Piccinni Barry Piccinni 2 2 silver badges 17 17 bronze badges.

Thanks for your reply, but this does not solve the issue. That column is already a date class, I expect this is an issue specific to Amazon Athena databases.

I doubt it is an Athena issue. Basically the two sides you're evaluating are not the same format. Without specific information about your table a create statement would be helpful I guessed that your date column was formatted as a timestamp. If you're sure that your date is in the correct format, then you need to format the right hand side of the evaluation as a date.By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service.

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Stack Overflow for Teams is a private, secure spot for you and your coworkers to find and share information. I want to convert datatype of string eg : 'T Please post the error message on our forum or contact customer support with Query Id: 6b4ae2e1-fbeaad Reason : Because date in string format and have to convert into timestamp. But I don't know how to convert it. Learn more.

athena string to timestamp

How to convert string into timestamp in Presto Athena? Ask Question. Asked 2 years ago. Active 7 months ago. Viewed 9k times. Piotr Findeisen Harshit Agrawal Harshit Agrawal 51 1 1 silver badge 3 3 bronze badges. Active Oldest Votes. Nick I used the following way and it worked for me.

Dheeraj Dheeraj 4 4 silver badges 7 7 bronze badges. You can try something like below. Alpesh Jikadra Alpesh Jikadra 1, 1 1 gold badge 9 9 silver badges 20 20 bronze badges. Devendra Choudhary Devendra Choudhary 26 7 7 bronze badges. The Overflow Blog.

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Question feed.By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service. The dark mode beta is finally here. Change your preferences any time. Stack Overflow for Teams is a private, secure spot for you and your coworkers to find and share information. Learn more. Amazon Athena - Converting Timestamp to Date? Ask Question. Asked 1 year, 9 months ago. Active 1 year, 9 months ago.

Viewed 12k times. Piotr Findeisen Louis Louis 1 1 gold badge 6 6 silver badges 17 17 bronze badges. Active Oldest Votes. The reason for not having a conversion function is, that this can be achieved with a type cast. Sign up or log in Sign up using Google. Sign up using Facebook.

athena string to timestamp

Sign up using Email and Password. Post as a guest Name. Email Required, but never shown. The Overflow Blog. The Overflow How many jobs can be done at home? Featured on Meta. Community and Moderator guidelines for escalating issues via new response….

Feedback on Q2 Community Roadmap. Technical site integration observational experiment live on Stack Overflow. Triage needs to be fixed urgently, and users need to be notified upon…. Dark Mode Beta - help us root out low-contrast and un-converted bits. Related Hot Network Questions. Question feed. Stack Overflow works best with JavaScript enabled.Hi, I need to convert string 26 Please letme know if anybody knows.

If you still want to do it, something like this will probably work.

If so then use replacechr to change it to something like ':'. Up to version 7. For version 8. I am facing the same issue, your solution might resolve it but I don't understand why the microseconds cannot be converted. US' ]. I did some more research and came to following conclusion. In fact the same applies to the entire time string. I think the integration service fails to read the time if it is all zeros which makes sense because there is no such time in the clock.

US'but found that it did not work for 27 char datetime string either. Why does Informatica PowerCenter 9. It hurt's their brand. It wouldn't work because the formula will look for only 26 characters. What is your format which is resulting in 27 characters?

You will have to adjust the substring accordingly. Error: You don't have JavaScript enabled. This tool uses JavaScript and much of it will not work correctly without it enabled.

Please turn JavaScript back on and reload this page. Please enter a title. You cannot post a blank message. Please enter your message and try again. Cheers, Partha. This content has been marked as final. Show 7 replies.Amazon Athena pricing is based on the bytes scanned. In our previous article, Partitioning Your Data With Amazon Athenawe partitioned our data into folders to reduce the amount of data scanned. But those partitions were being loaded into our Athena table manually.

Previously, we partitioned our data into folders by the numPets property. Here is a listing of that data in S However, by ammending the folder name, we can have Athena load the partitions automatically.

SQL Reference for Amazon Athena

Important: The column name in the object key name must be all lower-case. But in the object key name in S3, we must use numpets. We only have a single partition using the numPets column. This statement will among other thingsinstruct Athena to automatically load all the partitions from the S3 data. Partitioning your data can dramatically reduce the amount of data scanned during your Athena queries.

Please note, by default Athena has a limit of 20, partitions per table. This limit can be raised by contacting AWS Support. Whatever limit you have, ensure your data stays below that limit. Skeddly is the leading scheduling service for your AWS account.

Using Skeddly, you can:. Sign-up for our 30 day free trial or sign-in to your Skeddly account to get started. Toggle navigation. Blog Archives Subscribe Login Sign-up. Skeddly Blog Skeddly news and announcements In this article, we will show how to load the partitions automatically.

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